# Claude Haiku 4.5 Thinking vs Claude Opus 4.5 Thinking

> Side-by-side benchmark comparison for Claude Haiku 4.5 Thinking and Claude Opus 4.5 Thinking across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/claude-haiku-4-5-thinking-vs-claude-opus-4-5-thinking
- Last updated: September 4, 2026

- Shared sourced benchmarks: 1
- HTML indexing: indexable
- Ranking lane: BenchAlign v5

## Quick Verdict

Evidence is too thin for a benchmark verdict: Claude Haiku 4.5 Thinking and Claude Opus 4.5 Thinking share only 1 sourced benchmark row.

## Summary

- Only 1 shared sourced benchmark row is available. That is not enough for a broad capability verdict, so this mirror does not name an overall winner.

## Model Snapshot

| Property | Claude Haiku 4.5 Thinking | Claude Opus 4.5 Thinking |
|----------|----------|----------|
| Creator | Anthropic | Anthropic |
| Type | Proprietary | Proprietary |
| Reasoning | Reasoning | Reasoning |
| Context | 200K | 200K |
| Independent public score (not head-to-head) | null | 56.09 |
| Benchmarks Covered | 1 | 1 |
| Pricing (input/output) | N/A | N/A |

## Category Breakdown

### Coding

- Winner: Insufficient shared evidence
- Claude Haiku 4.5 Thinking public-lane score: Coming soon
- Claude Opus 4.5 Thinking public-lane score: 55.2 (Estimated · #41/183)

| Benchmark | Claude Haiku 4.5 Thinking | Claude Opus 4.5 Thinking | Winner |
|-----------|-----------|-----------|--------|
| Vibe Code Bench | 11.39% | 20.63% | Claude Opus 4.5 Thinking |

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- Claude Haiku 4.5 Thinking public-lane score: Coming soon
- Claude Opus 4.5 Thinking public-lane score: 69 (Unranked · 1 rankable row)

### Reasoning

- Winner: Insufficient shared evidence
- Claude Haiku 4.5 Thinking public-lane score: Coming soon
- Claude Opus 4.5 Thinking public-lane score: 75.7 (Unranked · 2 rankable rows)

### Knowledge

- Winner: Insufficient shared evidence
- Claude Haiku 4.5 Thinking public-lane score: Coming soon
- Claude Opus 4.5 Thinking public-lane score: 56.1 (Estimated · #54/181)

### Instruction Following

- Winner: Insufficient shared evidence
- Claude Haiku 4.5 Thinking public-lane score: Coming soon
- Claude Opus 4.5 Thinking public-lane score: 69.7 (#63/120)

## FAQ

### Is there enough evidence to pick between Claude Haiku 4.5 Thinking and Claude Opus 4.5 Thinking?

Not yet. The models share only 1 sourced benchmark row, so this mirror reports the available measurements and metadata without naming a broad winner.

### What can I compare safely on this page?

Published pricing, context windows, model type, and individual shared benchmark rows are directly comparable. Independent overall scores and non-overlapping benchmark coverage are labeled separately and should not be read as a controlled head-to-head result.

## Related Comparisons

- [Claude Haiku 4.5 Thinking vs Claude Haiku 4.5](/compare/claude-haiku-4-5-vs-claude-haiku-4-5-thinking)
- [Claude Opus 4.5 Thinking vs Claude Haiku 4.5](/compare/claude-haiku-4-5-vs-claude-opus-4-5-thinking)
- [Claude Haiku 4.5 Thinking vs Claude Opus 4.5](/compare/claude-haiku-4-5-thinking-vs-claude-opus-4-5)
- [Claude Opus 4.5 Thinking vs Claude Opus 4.5](/compare/claude-opus-4-5-vs-claude-opus-4-5-thinking)

## Explore More

- [Claude Haiku 4.5 Thinking profile](/models/claude-haiku-4-5-thinking)
- [Claude Opus 4.5 Thinking profile](/models/claude-opus-4-5-thinking)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)