Claude Opus 5.5
API
claude-opus-5-5text, image → text
input → output
Claude APIAmazon BedrockGoogle CloudMicrosoft FoundryClaude Platform on AWS
Source for Claude Opus 5.5
Anthropic
Data verified
This page groups canonical Anthropic model families and applies the same public scoring lane used by the main leaderboard.
Model count
19
Best model
86.98/100
Claude Opus 5.5
Avg. top 3
83.3/100
Latest release
September 2026
Public-ranked
17
Supported
10
Current provider directory
Current Anthropic models and API IDs
As of September 27, 2026, this directory contains 6 active, preview, announced, or limited-access entries. Provider-issued IDs appear only when the underlying documentation identifies them; BenchLM model keys are kept separate.
Latest tracked release
Claude Opus 5.5
Sep 22, 2026
Open the dated sourceOperational record
- Current API IDs
- 4
- Inactive variants
- 3
Current provider-issued API model IDs
Shared IDs are listed once. Request-time reasoning modes and other configurations do not become separate model IDs.
claude-opus-5-5Source for claude-opus-5-5claude-fable-5-1Source for claude-fable-5-1claude-sonnet-5Source for claude-sonnet-5claude-opus-4-7Source for claude-opus-4-7
Earlier source-dated releases
Together with the latest release above, these are the three newest dated release groups in the tracked provider inventory.
Claude Fable 5.1 and Claude Mythos 5.1
Sep 1, 2026
Dated sourceClaude Opus 5
Jul 24, 2026
Dated source
All Anthropic models
Search every tracked model variant, including preview, limited-access, deprecated, and open-weight releases. Provider identifiers and specifications link to first-party evidence where it is available.
- Model variants
- 26
- Model families
- 19
- Current entries
- 6
- Evidence date
- September 27, 2026
Showing 26 of 26 variants
Prices are input / output per 1M tokens.
- Model
- Claude Opus 5.5
- Lifecycle
- Available
- Official identifier
- Modalities
- Context
- 1M
- Price
- $4 / $20
- Access and source
- Model
- Claude Fable 5.1
Claude Fable77/100- Lifecycle
- Available
- Official identifier
APIclaude-fable-5-1- Modalities
Not published
input → output
- Context
- 1M
- Price
- $10 / $50
- Access and source
Claude APIClaude productsAWSGoogle CloudMicrosoft AzureSource for Claude Fable 5.1- Model
- Claude Mythos 5.1
Claude Mythos- Lifecycle
- Limited access
- Official identifier
- Not published
- Modalities
Not published
input → output
- Context
- 1M
- Price
- Not documented
- Access and source
Cyber Verification ProgramLife Sciences Verification ProgramClaude SecuritySource for Claude Mythos 5.1- Model
- Claude Sonnet 5
Claude Sonnet 572/100- Lifecycle
- Available
- Official identifier
APIclaude-sonnet-5- Modalities
text, image → text
input → output
- Context
- 1M
- Price
- $2 / $10
- Access and source
Claude APISource for Claude Sonnet 5- Model
- Claude Opus 4.7
Claude Opus 4.7- Lifecycle
- Available
- Official identifier
APIclaude-opus-4-7- Modalities
text, image → text
input → output
- Context
- 1M
- Price
- $5 / $25
- Access and source
Claude APISource for Claude Opus 4.7- Model
- Claude Mythos Preview
Claude Mythospreview- Lifecycle
- Limited access
- Official identifier
- Not published
- Modalities
Not published
input → output
- Context
- Not published
- Price
- $25 / $125
- Access and source
Project Glasswing participantsSource for Claude Mythos Preview- Model
- Claude Opus 4.6 (Adaptive)
Claude Opus 4.6reasoning- Lifecycle
- Available
- Official identifier
APIclaude-opus-4-6Adaptive thinking is a request configuration on claude-opus-4-6, not a separate API model ID.
- Modalities
text, image → text
input → output
- Context
- 1M
- Price
- Not documented
- Access and source
Claude APISource for Claude Opus 4.6 (Adaptive)- Model
- Claude Opus 4.5
Claude Opus 4.554/100- Lifecycle
- Established
- Official identifier
- Not documented
- Modalities
Not documented
input → output
- Context
- 200K
- Price
- $5 / $25
- Access and source
Not documentedSource for Claude Opus 4.5- Model
- Claude Opus 4.5 Thinking
Claude Opus 4.5reasoning- Lifecycle
- Established
- Official identifier
- Not documented
- Modalities
Not documented
input → output
- Context
- 200K
- Price
- Not documented
- Access and source
Not documentedSource for Claude Opus 4.5 Thinking- Model
- Claude Haiku 4.5
Claude Haiku 4.5- Lifecycle
- Established
- Official identifier
- Not documented
- Modalities
Not documented
input → output
- Context
- 200K
- Price
- $1 / $5
- Access and source
Not documentedSource for Claude Haiku 4.5- Model
- Claude Haiku 4.5 Thinking
Claude Haiku 4.5reasoning- Lifecycle
- Established
- Official identifier
- Not documented
- Modalities
Not documented
input → output
- Context
- 200K
- Price
- Not documented
- Access and source
Not documentedSource for Claude Haiku 4.5 Thinking- Model
- Claude Sonnet 4.5
Claude Sonnet 4.5- Lifecycle
- Established
- Official identifier
- Not documented
- Modalities
Not documented
input → output
- Context
- 200K
- Price
- $3 / $15
- Access and source
Not documentedSource for Claude Sonnet 4.5- Model
- Claude Sonnet 4.5 Thinking
Claude Sonnet 4.5reasoning- Lifecycle
- Established
- Official identifier
- Not documented
- Modalities
Not documented
input → output
- Context
- 200K
- Price
- Not documented
- Access and source
Not documentedSource for Claude Sonnet 4.5 Thinking- Model
- Claude 4.1 Opus
Claude 4.1 Opus- Lifecycle
- Established
- Official identifier
- Not documented
- Modalities
Not documented
input → output
- Context
- 200K
- Price
- $15 / $75
- Access and source
Not documentedSource for Claude 4.1 Opus- Model
- Claude 4.1 Opus Thinking
Claude 4.1 Opusreasoning- Lifecycle
- Established
- Official identifier
- Not documented
- Modalities
Not documented
input → output
- Context
- 200K
- Price
- Not documented
- Access and source
Not documentedSource for Claude 4.1 Opus Thinking- Model
- Claude 4 Sonnet
Claude 4 Sonnet- Lifecycle
- Established
- Official identifier
- Not documented
- Modalities
Not documented
input → output
- Context
- 200K
- Price
- $3 / $15
- Access and source
Not documentedSource for Claude 4 Sonnet- Model
- Claude 3.5 Sonnet
Claude 3.5 Sonnet- Lifecycle
- Established
- Official identifier
- Not documented
- Modalities
Not documented
input → output
- Context
- 200K
- Price
- $3 / $15
- Access and source
Not documentedSource for Claude 3.5 Sonnet- Model
- Claude 3 Haiku
Claude 3 Haiku- Lifecycle
- Established
- Official identifier
- Not documented
- Modalities
Not documented
input → output
- Context
- 200K
- Price
- $0.25 / $1.25
- Access and source
Not documentedSource for Claude 3 Haiku- Model
- Claude 3 Opus
Claude 3 Opus- Lifecycle
- Established
- Official identifier
- Not documented
- Modalities
Not documented
input → output
- Context
- 200K
- Price
- $15 / $75
- Access and source
Not documentedSource for Claude 3 Opus- Model
- Claude Opus 5
Claude Opus 585/100- Lifecycle
- Available
- Official identifier
APIclaude-opus-5- Modalities
text, image → text
input → output
- Context
- 1M
- Price
- $5 / $25
- Access and source
Claude APISource for Claude Opus 5- Model
- Claude Fable 5
Claude Fable80/100- Lifecycle
- Available
- Official identifier
APIclaude-fable-5- Modalities
text, image → text
input → output
- Context
- 1M
- Price
- $10 / $50
- Access and source
Claude APISource for Claude Fable 5- Model
- Claude Mythos 5
Claude Mythos- Lifecycle
- Limited access
- Official identifier
APIclaude-mythos-5- Modalities
text, image → text
input → output
- Context
- 1M
- Price
- $10 / $50
- Access and source
Claude APISource for Claude Mythos 5- Model
- Claude Opus 4.8
Claude Opus 4.873/100- Lifecycle
- Available
- Official identifier
APIclaude-opus-4-8- Modalities
text, image → text
input → output
- Context
- 1M
- Price
- $5 / $25
- Access and source
Claude APISource for Claude Opus 4.8- Model
- Claude Opus 4.7 (Adaptive)
Claude Opus 4.7reasoning63/100- Lifecycle
- Superseded
- Official identifier
- Not documented
- Modalities
Not documented
input → output
- Context
- 1M
- Price
- $5 / $25
- Access and source
Not documentedSource for Claude Opus 4.7 (Adaptive)- Model
- Claude Opus 4.6
Claude Opus 4.663/100- Lifecycle
- Superseded
- Official identifier
- Not documented
- Modalities
Not documented
input → output
- Context
- 1M
- Price
- $5 / $25
- Access and source
Not documentedSource for Claude Opus 4.6- Model
- Claude Sonnet 4.6
Claude Sonnet 4.660/100- Lifecycle
- Superseded
- Official identifier
- Not documented
- Modalities
Not documented
input → output
- Context
- 200K
- Price
- $3 / $15
- Access and source
Not documentedSource for Claude Sonnet 4.6
Prices are input / output per 1M tokens.
Score trend
Anthropic's average score across its top 3 ranked models, cumulative through each release month.
Ranked family representatives
One canonical entry per model family. Public scores use the same evidence rules as the main leaderboard.
| Context | Price | Public score | |||||
|---|---|---|---|---|---|---|---|
| Claude Opus 5.5 | Current | 1M | $4.00 / $20.00 | 90 | 34.88s | 86.98Estimated | |
| Claude Fable 5.1 | Current | 1M | $10.00 / $50.00 | 65 | 291.45s | 83Supported | |
| Claude Opus 5 | Superseded | $5.00 / $25.00 | 54 | 54.78s | 79.81Supported | ||
| Claude Fable 5 | Superseded | 1M+ | $10.00 / $50.00 | 67 | 107.97s | 79.07Supported | |
| Claude Opus 4.8 | Superseded | 1M | $5.00 / $25.00 | 58 | 34.59s | 70.46Supported | |
| Claude Sonnet 5 | Current | 1M | $2.00 / $10.00 | 78 | 146.46s | 67.01Supported | |
| Claude Opus 4.7 | Current | 1M | $5.00 / $25.00 | 50 | 26.04s | 66.28Estimated | |
| Claude Opus 4.6 | Superseded | 1M | $5.00 / $25.00 | 39 | 2.23s | 63.64Supported | |
| Claude Sonnet 4.6 | Superseded | 200K | $3.00 / $15.00 | 42 | 1.27s | 56.35Supported | |
| Claude Opus 4.5 | Established | 200K | $5.00 / $25.00 | 46 | 1.22s | 55.09Supported | |
| Claude Sonnet 4.5 | Established | 200K | $3.00 / $15.00 | N/A | N/A | 47.85Estimated | |
| Claude Haiku 4.5 | Established | 200K | $1.00 / $5.00 | N/A | N/A | 42.48Estimated | |
| Claude 4.1 Opus | Established | 200K | $15.00 / $75.00 | 29 | 1.66s | 38.47Estimated | |
| Claude 4 Sonnet | Established | 200K | $3.00 / $15.00 | 40 | 1.33s | 36.08Estimated | |
| Claude 3.5 Sonnet | Established | 200K | $3.00 / $15.00 | N/A | N/A | 29.95Estimated | |
| Claude 3 Opus | Established | 200K | $15.00 / $75.00 | N/A | N/A | 28.66Supported | |
| Claude 3 Haiku | Established | 200K | $0.25 / $1.25 | 138 | 1.16s | 14.75Supported | |
| Claude Mythos 5 | Superseded | 1M+ | $10.00 / $50.00 | N/A | N/A | — | |
| Claude Mythos 5.1 | Current | 1M | N/A | N/A | N/A | — |
Anthropic model IDs and aliases
The exact strings the API accepts, which of them are pinned snapshots, and which are aliases that can start resolving somewhere new. A dateless ID here is not an evergreen pointer — it is the snapshot.
Retirement dates and replacements| Model | Canonical API ID | Alias | Bedrock / Google Cloud | Availability |
|---|---|---|---|---|
| Claude Opus 5.5 | claude-opus-5-5Pinned (dateless) | Same as the ID | anthropic.claude-opus-5-5claude-opus-5-5 | ActiveCatalog: Current |
| Claude Fable 5.1Anthropic confirms this Claude API ID and all-platform availability in the Fable 5.1 launch announcement; partner-platform-specific IDs are not published there. | claude-fable-5-1Pinned (dateless) | Same as the ID | Not published | ActiveCatalog: Current |
| Claude Fable 5 | claude-fable-5Pinned (dateless) | Same as the ID | anthropic.claude-fable-5claude-fable-5 | ActiveCatalog: Current |
| Claude Opus 5 | claude-opus-5Pinned (dateless) | Same as the ID | anthropic.claude-opus-5claude-opus-5 | ActiveCatalog: Current |
| Claude Sonnet 5 | claude-sonnet-5Pinned (dateless) | Same as the ID | anthropic.claude-sonnet-5claude-sonnet-5 | ActiveCatalog: Current |
| Claude Haiku 4.5 | claude-haiku-4-5-20251001Pinned (dated) | claude-haiku-4-5Resolves to the latest dated snapshot | anthropic.claude-haiku-4-5-20251001-v1:0claude-haiku-4-5@20251001 | ActiveCatalog: Current |
| Claude Mythos 5Invitation-only under Project Glasswing. No published Bedrock or Google Cloud ID. | claude-mythos-5Pinned (dateless) | Same as the ID | Not published | ActiveCatalog: Limited availability |
| Claude Opus 4.8 | claude-opus-4-8Pinned (dateless) | Same as the ID | anthropic.claude-opus-4-8claude-opus-4-8 | ActiveCatalog: Legacy |
| Claude Opus 4.7 | claude-opus-4-7Pinned (dateless) | Same as the ID | anthropic.claude-opus-4-7claude-opus-4-7 | ActiveCatalog: Legacy |
| Claude Opus 4.6Last Bedrock ID to carry the -v1 suffix; it was dropped from Sonnet 4.6 onward. | claude-opus-4-6Pinned (dateless) | Same as the ID | anthropic.claude-opus-4-6-v1claude-opus-4-6 | ActiveCatalog: Legacy |
| Claude Sonnet 4.6 | claude-sonnet-4-6Pinned (dateless) | Same as the ID | anthropic.claude-sonnet-4-6claude-sonnet-4-6 | ActiveCatalog: Legacy |
| Claude Sonnet 4.5 | claude-sonnet-4-5-20250929Pinned (dated) | claude-sonnet-4-5Resolves to the latest dated snapshot | anthropic.claude-sonnet-4-5-20250929-v1:0claude-sonnet-4-5@20250929 | ActiveCatalog: Legacy |
| Claude Opus 4.5 | claude-opus-4-5-20251101Pinned (dated) | claude-opus-4-5Resolves to the latest dated snapshot | anthropic.claude-opus-4-5-20251101-v1:0claude-opus-4-5@20251101 | ActiveCatalog: Legacy |
Radar
Full release historyAnthropic release history
Claude Opus 5.5 released
Anthropic · Model release
Source confirmed
Claude Fable 5.1 and Claude Mythos 5.1 released
Anthropic · Model release
Source confirmed
Claude Opus 5 released
Anthropic · Model release
Source confirmed
Claude Sonnet 5 released
Anthropic · Model release
Source confirmed
Claude Fable 5 and Claude Mythos 5 released
Anthropic · Model release
Source confirmed
Radar confirmed these at the source. Use Anthropic in your work? Explore Radar to follow supported changes and choose your alerts.