# Anthropic model deprecations

Every Claude model deprecation across the first-party API, Azure AI Foundry, Vertex AI, and Amazon Bedrock, with published dates and receipts on every row.

As of Sep 26, 2026, Anthropic has 35 upcoming dated retirements and 14 past across its first-party API and the partner routes in the feed. The next is claude-sonnet-4-5-20250929 on the first-party API no sooner than Sep 29, 2026.

- 49 dated notices tracked
- 35 upcoming
- 14 past
- Last verified September 25, 2026

## Notice policy

60+ day minimum. At least 60 days’ notice before retirement for publicly released models

Anthropic publishes forward-looking retirement dates ahead of the notice window.

[Read Anthropic’s policy](https://platform.claude.com/docs/en/about-claude/model-deprecations)

17 of these dates come from Anthropic’s own page; 23 are published by Azure AI Foundry for Anthropic models it hosts; 6 are published by Vertex AI for Anthropic models it hosts; 3 are published by Amazon Bedrock for Anthropic models it hosts.

## Upcoming retirements

| Model | Route | Retirement date | Announced / observed | Replacement | Receipt |
|---|---|---|---|---|---|
| `claude-sonnet-4-5-20250929` | First party | No sooner than September 29, 2026 (may retire from this date) | First observed by Radar August 26, 2026 | No published replacement | [Receipt](https://platform.claude.com/docs/en/about-claude/model-deprecations) |
| `anthropic.claude-sonnet-4-20250514-v1:0` | Amazon Bedrock | October 14, 2026 | Announced April 14, 2026 | No published replacement | [Receipt](https://docs.aws.amazon.com/bedrock/latest/userguide/model-lifecycle.html) |
| `claude-haiku-4-5-20251001` | First party | No sooner than October 15, 2026 (may retire from this date) | First observed by Radar August 26, 2026 | No published replacement | [Receipt](https://platform.claude.com/docs/en/about-claude/model-deprecations) |
| `claude-haiku-4-5` | Azure AI Foundry | October 19, 2026 | First observed by Radar August 26, 2026 | No published replacement | [Receipt](https://raw.githubusercontent.com/MicrosoftDocs/azure-ai-docs/main/articles/foundry/openai/includes/concepts-model-retirement-schedule-content.md) |
| `claude-haiku-4-5@1` | Azure AI Foundry | October 19, 2026 | First observed by Radar August 28, 2026 | No published replacement | [Receipt](https://raw.githubusercontent.com/MicrosoftDocs/azure-ai-docs/main/articles/foundry/openai/includes/concepts-model-retirement-schedule-content.md) |
| `claude-haiku-4-5@2` | Azure AI Foundry | October 19, 2026 | First observed by Radar August 28, 2026 | No published replacement | [Receipt](https://raw.githubusercontent.com/MicrosoftDocs/azure-ai-docs/main/articles/foundry/openai/includes/concepts-model-retirement-schedule-content.md) |
| `claude-opus-4-5` | Azure AI Foundry | October 19, 2026 | First observed by Radar August 26, 2026 | No published replacement | [Receipt](https://raw.githubusercontent.com/MicrosoftDocs/azure-ai-docs/main/articles/foundry/openai/includes/concepts-model-retirement-schedule-content.md) |
| `claude-opus-4-5@1` | Azure AI Foundry | October 19, 2026 | First observed by Radar August 28, 2026 | No published replacement | [Receipt](https://raw.githubusercontent.com/MicrosoftDocs/azure-ai-docs/main/articles/foundry/openai/includes/concepts-model-retirement-schedule-content.md) |
| `claude-sonnet-4-5` | Azure AI Foundry | October 19, 2026 | First observed by Radar August 26, 2026 | No published replacement | [Receipt](https://raw.githubusercontent.com/MicrosoftDocs/azure-ai-docs/main/articles/foundry/openai/includes/concepts-model-retirement-schedule-content.md) |
| `claude-sonnet-4-5@1` | Azure AI Foundry | October 19, 2026 | First observed by Radar August 28, 2026 | No published replacement | [Receipt](https://raw.githubusercontent.com/MicrosoftDocs/azure-ai-docs/main/articles/foundry/openai/includes/concepts-model-retirement-schedule-content.md) |
| `claude-opus-4-5-20251101` | First party | No sooner than November 24, 2026 (may retire from this date) | First observed by Radar August 26, 2026 | No published replacement | [Receipt](https://platform.claude.com/docs/en/about-claude/model-deprecations) |
| `anthropic.claude-opus-4-1-20250805-v1:0` | Amazon Bedrock | January 8, 2027 | Announced July 8, 2026 | No published replacement | [Receipt](https://docs.aws.amazon.com/bedrock/latest/userguide/model-lifecycle.html) |
| `claude-opus-4-6` | Azure AI Foundry | February 2, 2027 | First observed by Radar August 26, 2026 | No published replacement | [Receipt](https://raw.githubusercontent.com/MicrosoftDocs/azure-ai-docs/main/articles/foundry/openai/includes/concepts-model-retirement-schedule-content.md) |
| `claude-opus-4-6@1` | Azure AI Foundry | February 2, 2027 | First observed by Radar August 28, 2026 | No published replacement | [Receipt](https://raw.githubusercontent.com/MicrosoftDocs/azure-ai-docs/main/articles/foundry/openai/includes/concepts-model-retirement-schedule-content.md) |
| `claude-opus-4-6` | First party | No sooner than February 5, 2027 (may retire from this date) | First observed by Radar August 26, 2026 | No published replacement | [Receipt](https://platform.claude.com/docs/en/about-claude/model-deprecations) |
| `claude-sonnet-4-6` | Azure AI Foundry | February 10, 2027 | First observed by Radar August 26, 2026 | No published replacement | [Receipt](https://raw.githubusercontent.com/MicrosoftDocs/azure-ai-docs/main/articles/foundry/openai/includes/concepts-model-retirement-schedule-content.md) |
| `claude-sonnet-4-6@1` | Azure AI Foundry | February 10, 2027 | First observed by Radar August 28, 2026 | No published replacement | [Receipt](https://raw.githubusercontent.com/MicrosoftDocs/azure-ai-docs/main/articles/foundry/openai/includes/concepts-model-retirement-schedule-content.md) |
| `claude-sonnet-4-6` | First party | No sooner than February 17, 2027 (may retire from this date) | First observed by Radar August 26, 2026 | No published replacement | [Receipt](https://platform.claude.com/docs/en/about-claude/model-deprecations) |
| `claude-mythos-preview` | Azure AI Foundry | April 2, 2027 | First observed by Radar August 26, 2026 | No published replacement | [Receipt](https://raw.githubusercontent.com/MicrosoftDocs/azure-ai-docs/main/articles/foundry/openai/includes/concepts-model-retirement-schedule-content.md) |
| `claude-opus-4-7` | Azure AI Foundry | April 6, 2027 | First observed by Radar August 26, 2026 | No published replacement | [Receipt](https://raw.githubusercontent.com/MicrosoftDocs/azure-ai-docs/main/articles/foundry/openai/includes/concepts-model-retirement-schedule-content.md) |
| `claude-opus-4-7@1` | Azure AI Foundry | April 6, 2027 | First observed by Radar August 28, 2026 | No published replacement | [Receipt](https://raw.githubusercontent.com/MicrosoftDocs/azure-ai-docs/main/articles/foundry/openai/includes/concepts-model-retirement-schedule-content.md) |
| `claude-opus-4-7` | First party | No sooner than April 16, 2027 (may retire from this date) | First observed by Radar August 26, 2026 | No published replacement | [Receipt](https://platform.claude.com/docs/en/about-claude/model-deprecations) |
| `claude-opus-4-8` | First party | No sooner than May 28, 2027 (may retire from this date) | First observed by Radar August 26, 2026 | No published replacement | [Receipt](https://platform.claude.com/docs/en/about-claude/model-deprecations) |
| `claude-fable-5` | First party | No sooner than June 9, 2027 (may retire from this date) | First observed by Radar August 26, 2026 | No published replacement | [Receipt](https://platform.claude.com/docs/en/about-claude/model-deprecations) |
| `claude-sonnet-5` | First party | No sooner than June 30, 2027 (may retire from this date) | First observed by Radar August 26, 2026 | No published replacement | [Receipt](https://platform.claude.com/docs/en/about-claude/model-deprecations) |
| `claude-sonnet-5@1` | Azure AI Foundry | June 30, 2027 | First observed by Radar August 28, 2026 | No published replacement | [Receipt](https://raw.githubusercontent.com/MicrosoftDocs/azure-ai-docs/main/articles/foundry/openai/includes/concepts-model-retirement-schedule-content.md) |
| `claude-sonnet-5@2` | Azure AI Foundry | June 30, 2027 | First observed by Radar August 28, 2026 | No published replacement | [Receipt](https://raw.githubusercontent.com/MicrosoftDocs/azure-ai-docs/main/articles/foundry/openai/includes/concepts-model-retirement-schedule-content.md) |
| `claude-opus-5@1` | Azure AI Foundry | July 8, 2027 | First observed by Radar August 28, 2026 | No published replacement | [Receipt](https://raw.githubusercontent.com/MicrosoftDocs/azure-ai-docs/main/articles/foundry/openai/includes/concepts-model-retirement-schedule-content.md) |
| `claude-opus-5@2` | Azure AI Foundry | July 8, 2027 | First observed by Radar August 28, 2026 | No published replacement | [Receipt](https://raw.githubusercontent.com/MicrosoftDocs/azure-ai-docs/main/articles/foundry/openai/includes/concepts-model-retirement-schedule-content.md) |
| `claude-opus-5` | First party | No sooner than July 24, 2027 (may retire from this date) | First observed by Radar August 26, 2026 | No published replacement | [Receipt](https://platform.claude.com/docs/en/about-claude/model-deprecations) |
| `claude-fable-5-1` | First party | No sooner than September 1, 2027 (may retire from this date) | First observed by Radar September 2, 2026 | No published replacement | [Receipt](https://platform.claude.com/docs/en/about-claude/model-deprecations) |
| `claude-opus-4-8@1` | Azure AI Foundry | September 1, 2027 | First observed by Radar August 28, 2026 | No published replacement | [Receipt](https://raw.githubusercontent.com/MicrosoftDocs/azure-ai-docs/main/articles/foundry/openai/includes/concepts-model-retirement-schedule-content.md) |
| `claude-opus-4-8@2` | Azure AI Foundry | September 1, 2027 | First observed by Radar August 28, 2026 | No published replacement | [Receipt](https://raw.githubusercontent.com/MicrosoftDocs/azure-ai-docs/main/articles/foundry/openai/includes/concepts-model-retirement-schedule-content.md) |
| `claude-fable-5-1@1` | Azure AI Foundry | December 5, 2027 | First observed by Radar September 3, 2026 | No published replacement | [Receipt](https://raw.githubusercontent.com/MicrosoftDocs/azure-ai-docs/main/articles/foundry/openai/includes/concepts-model-retirement-schedule-content.md) |
| `claude-fable-5@1` | Azure AI Foundry | December 5, 2027 | First observed by Radar August 28, 2026 | No published replacement | [Receipt](https://raw.githubusercontent.com/MicrosoftDocs/azure-ai-docs/main/articles/foundry/openai/includes/concepts-model-retirement-schedule-content.md) |

## Past retirements

| Model | Route | Retirement date | Announced / observed | Replacement | Receipt |
|---|---|---|---|---|---|
| `anthropic.claude-3-haiku-20240307-v1:0` | Amazon Bedrock | September 10, 2026 | Announced March 10, 2026 | No published replacement | [Receipt](https://docs.aws.amazon.com/bedrock/latest/userguide/model-lifecycle.html) |
| `claude-3-haiku` | Vertex AI | August 23, 2026 | Announced February 23, 2026 | No published replacement | [Receipt](https://docs.cloud.google.com/gemini-enterprise-agent-platform/models/deprecations/partner-models) |
| `claude-opus-4-1` | Azure AI Foundry | August 5, 2026 | First observed by Radar August 26, 2026 | `claude-opus-5` (Provider-named replacement; equivalence is not asserted.) | [Receipt](https://raw.githubusercontent.com/MicrosoftDocs/azure-ai-docs/main/articles/foundry/openai/includes/concepts-model-retirement-schedule-content.md) |
| `claude-opus-4-1-20250805` | First party | August 5, 2026 | Announced June 5, 2026 | `claude-opus-4-8` (Provider-named replacement; equivalence is not asserted.) | [Receipt](https://platform.claude.com/docs/en/about-claude/model-deprecations) |
| `claude-3-5-haiku` | Vertex AI | July 5, 2026 | Announced January 5, 2026 | No published replacement | [Receipt](https://docs.cloud.google.com/gemini-enterprise-agent-platform/models/deprecations/partner-models) |
| `claude-opus-4-20250514` | First party | June 15, 2026 | Announced April 14, 2026 | `claude-opus-4-8` (Provider-named replacement; equivalence is not asserted.) | [Receipt](https://platform.claude.com/docs/en/about-claude/model-deprecations) |
| `claude-sonnet-4-20250514` | First party | June 15, 2026 | Announced April 14, 2026 | `claude-sonnet-4-6` (Provider-named replacement; equivalence is not asserted.) | [Receipt](https://platform.claude.com/docs/en/about-claude/model-deprecations) |
| `claude-3-7-sonnet` | Vertex AI | May 11, 2026 | Announced November 11, 2025 | No published replacement | [Receipt](https://docs.cloud.google.com/gemini-enterprise-agent-platform/models/deprecations/partner-models) |
| `claude-3-haiku-20240307` | First party | April 20, 2026 | Announced February 19, 2026 | `claude-haiku-4-5-20251001` (Provider-named replacement; equivalence is not asserted.) | [Receipt](https://platform.claude.com/docs/en/about-claude/model-deprecations) |
| `claude-3-5-haiku-20241022` | First party | February 19, 2026 | Announced December 19, 2025 | `claude-haiku-4-5-20251001` (Provider-named replacement; equivalence is not asserted.) | [Receipt](https://platform.claude.com/docs/en/about-claude/model-deprecations) |
| `claude-3-5-sonnet` | Vertex AI | February 19, 2026 | Announced August 20, 2025 | No published replacement | [Receipt](https://docs.cloud.google.com/gemini-enterprise-agent-platform/models/deprecations/partner-models) |
| `claude-3-5-sonnet-v2` | Vertex AI | February 19, 2026 | Announced August 20, 2025 | No published replacement | [Receipt](https://docs.cloud.google.com/gemini-enterprise-agent-platform/models/deprecations/partner-models) |
| `claude-3-7-sonnet-20250219` | First party | February 19, 2026 | Announced October 28, 2025 | `claude-sonnet-4-6` (Provider-named replacement; equivalence is not asserted.) | [Receipt](https://platform.claude.com/docs/en/about-claude/model-deprecations) |
| `claude-3-opus` | Vertex AI | August 1, 2025 | Announced June 30, 2025 | No published replacement | [Receipt](https://docs.cloud.google.com/gemini-enterprise-agent-platform/models/deprecations/partner-models) |

## When the same model retires on different dates

The same model can carry a different published retirement date on each route it ships on. Radar does not reconcile the dates — use the one for the route you actually call.

### `claudeopus4120250805` — 156-day spread

- Anthropic · first party: August 5, 2026 ([Source](https://platform.claude.com/docs/en/about-claude/model-deprecations))
- Anthropic · Azure AI Foundry: August 5, 2026 ([Source](https://raw.githubusercontent.com/MicrosoftDocs/azure-ai-docs/main/articles/foundry/openai/includes/concepts-model-retirement-schedule-content.md))
- Anthropic · Amazon Bedrock: January 8, 2027 ([Source](https://docs.aws.amazon.com/bedrock/latest/userguide/model-lifecycle.html))

The same model carries different published dates by route. Use the date for the route you call; Radar does not reconcile them.

### `claude3haiku20240307` — 143-day spread

- Anthropic · first party: April 20, 2026 ([Source](https://platform.claude.com/docs/en/about-claude/model-deprecations))
- Anthropic · Vertex AI: August 23, 2026 ([Source](https://docs.cloud.google.com/gemini-enterprise-agent-platform/models/deprecations/partner-models))
- Anthropic · Amazon Bedrock: September 10, 2026 ([Source](https://docs.aws.amazon.com/bedrock/latest/userguide/model-lifecycle.html))

The same model carries different published dates by route. Use the date for the route you call; Radar does not reconcile them.

### `claude35haiku20241022` — 136-day spread

- Anthropic · first party: February 19, 2026 ([Source](https://platform.claude.com/docs/en/about-claude/model-deprecations))
- Anthropic · Vertex AI: July 5, 2026 ([Source](https://docs.cloud.google.com/gemini-enterprise-agent-platform/models/deprecations/partner-models))

The same model carries different published dates by route. Use the date for the route you call; Radar does not reconcile them.

### `claudesonnet420250514` — 121-day spread

- Anthropic · first party: June 15, 2026 ([Source](https://platform.claude.com/docs/en/about-claude/model-deprecations))
- Anthropic · Amazon Bedrock: October 14, 2026 ([Source](https://docs.aws.amazon.com/bedrock/latest/userguide/model-lifecycle.html))

The same model carries different published dates by route. Use the date for the route you call; Radar does not reconcile them.

### `claudefable51` — 95-day spread between published dates

- Anthropic · first party: No sooner than September 1, 2027 ([Source](https://platform.claude.com/docs/en/about-claude/model-deprecations))
- Anthropic · Azure AI Foundry: December 5, 2027 ([Source](https://raw.githubusercontent.com/MicrosoftDocs/azure-ai-docs/main/articles/foundry/openai/includes/concepts-model-retirement-schedule-content.md))

The same model carries different published dates by route. Use the date for the route you call; Radar does not reconcile them.

### `claude37sonnet20250219` — 81-day spread

- Anthropic · first party: February 19, 2026 ([Source](https://platform.claude.com/docs/en/about-claude/model-deprecations))
- Anthropic · Vertex AI: May 11, 2026 ([Source](https://docs.cloud.google.com/gemini-enterprise-agent-platform/models/deprecations/partner-models))

The same model carries different published dates by route. Use the date for the route you call; Radar does not reconcile them.

### `claudeopus4520251101` — 36-day spread between published dates

- Anthropic · Azure AI Foundry: October 19, 2026 ([Source](https://raw.githubusercontent.com/MicrosoftDocs/azure-ai-docs/main/articles/foundry/openai/includes/concepts-model-retirement-schedule-content.md))
- Anthropic · first party: No sooner than November 24, 2026 ([Source](https://platform.claude.com/docs/en/about-claude/model-deprecations))

The same model carries different published dates by route. Use the date for the route you call; Radar does not reconcile them.

### `claudesonnet4520250929` — 20-day spread between published dates

- Anthropic · first party: No sooner than September 29, 2026 ([Source](https://platform.claude.com/docs/en/about-claude/model-deprecations))
- Anthropic · Azure AI Foundry: October 19, 2026 ([Source](https://raw.githubusercontent.com/MicrosoftDocs/azure-ai-docs/main/articles/foundry/openai/includes/concepts-model-retirement-schedule-content.md))

The same model carries different published dates by route. Use the date for the route you call; Radar does not reconcile them.

### `claudeopus47` — 10-day spread between published dates

- Anthropic · Azure AI Foundry: April 6, 2027 ([Source](https://raw.githubusercontent.com/MicrosoftDocs/azure-ai-docs/main/articles/foundry/openai/includes/concepts-model-retirement-schedule-content.md))
- Anthropic · first party: No sooner than April 16, 2027 ([Source](https://platform.claude.com/docs/en/about-claude/model-deprecations))

The same model carries different published dates by route. Use the date for the route you call; Radar does not reconcile them.

### `claudesonnet46` — 7-day spread between published dates

- Anthropic · Azure AI Foundry: February 10, 2027 ([Source](https://raw.githubusercontent.com/MicrosoftDocs/azure-ai-docs/main/articles/foundry/openai/includes/concepts-model-retirement-schedule-content.md))
- Anthropic · first party: No sooner than February 17, 2027 ([Source](https://platform.claude.com/docs/en/about-claude/model-deprecations))

The same model carries different published dates by route. Use the date for the route you call; Radar does not reconcile them.

### `claudehaiku4520251001` — 4-day spread between published dates

- Anthropic · first party: No sooner than October 15, 2026 ([Source](https://platform.claude.com/docs/en/about-claude/model-deprecations))
- Anthropic · Azure AI Foundry: October 19, 2026 ([Source](https://raw.githubusercontent.com/MicrosoftDocs/azure-ai-docs/main/articles/foundry/openai/includes/concepts-model-retirement-schedule-content.md))

The same model carries different published dates by route. Use the date for the route you call; Radar does not reconcile them.

### `claudeopus46` — 3-day spread between published dates

- Anthropic · Azure AI Foundry: February 2, 2027 ([Source](https://raw.githubusercontent.com/MicrosoftDocs/azure-ai-docs/main/articles/foundry/openai/includes/concepts-model-retirement-schedule-content.md))
- Anthropic · first party: No sooner than February 5, 2027 ([Source](https://platform.claude.com/docs/en/about-claude/model-deprecations))

The same model carries different published dates by route. Use the date for the route you call; Radar does not reconcile them.

## FAQ

### Which Anthropic models are deprecated or being retired?

As of Sep 26, 2026, Anthropic has 35 upcoming dated retirements and 14 past across its first-party API and the partner routes in the feed. The next is claude-sonnet-4-5-20250929 on the first-party API no sooner than Sep 29, 2026. The soonest dated rows: claude-sonnet-4-5-20250929 on the first-party API no sooner than Sep 29, 2026; anthropic.claude-sonnet-4-20250514-v1:0 on Amazon Bedrock on Oct 14, 2026; claude-haiku-4-5-20251001 on the first-party API no sooner than Oct 15, 2026. Every row in the tables above carries its own source receipt.

### When is the next Anthropic model retirement?

claude-sonnet-4-5-20250929 on the first-party API no sooner than Sep 29, 2026, as published in the source linked on that row. Dates marked "no sooner than" are floors, not deadlines.

### How much notice does Anthropic give before retiring a model?

Anthropic states at least 60 days’ notice before retirement: “At least 60 days’ notice before retirement for publicly released models.”

### What does a "no sooner than" date mean?

It’s a floor, not a deadline. Some providers publish only the earliest possible shutdown date for a model, with the final date to be confirmed later. Treat it as "this won’t happen before this date," not as the date itself.

### What’s the difference between "Announced" and "First observed by Radar"?

"Announced" is the date the provider itself published the notice — it only appears on a row when the provider discloses one. "First observed by Radar" is Radar’s own collection timestamp, the date its pipeline first saw the source; it is never presented as the provider’s own announcement date.

### Does this page cover Anthropic models hosted on partner platforms?

Yes. This page lists every dated retirement notice observed for Anthropic, spanning its own first-party API and every partner platform it ships on. Each row’s Route column shows which one a given date applies to.

Canonical page: https://benchlm.ai/deprecations/anthropic