Model comparison
Claude 4.1 Opus Thinking vs Claude Haiku 4.5 Thinking
Head-to-head evidence from 0 shared benchmark results across 0 categories. Overall scores shown here use the public BenchAlign v5 ranking lane.
Public leaderboard positions: Claude 4.1 Opus Thinking #184 (Supported); Claude Haiku 4.5 Thinking unranked (Not scored). Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.
Evidence parity. Claude 4.1 Opus Thinking and Claude Haiku 4.5 Thinking share 0 comparable benchmark results. 0 of 8 categories are comparable. 9 results are unique to Claude 4.1 Opus Thinking; 2 to Claude Haiku 4.5 Thinking.
Updated July 23, 2026- Shared results
- 0
- Claude 4.1 Opus Thinking only
- 9
- Claude Haiku 4.5 Thinking only
- 2
- Comparable categories
- 0 / 8
Benchmark data for Claude 4.1 Opus Thinking and Claude Haiku 4.5 Thinking is coming soon on BenchLM.
Confidence note. This is a partial-evidence comparison with 0 shared benchmark results across 0 evidence categories; 0 of 8 categories currently have scoreable aggregates for both models. Treat the verdict as directional until coverage is more balanced.
Why this result
BenchLM has partial data for these models, but not enough overlapping benchmark coverage to produce a fair score-level comparison yet.
Operational comparison
Runtime and commercial metrics are compared only when both models have a complete sourced value.
| Metric | Claude 4.1 Opus Thinking | Claude Haiku 4.5 Thinking | Comparison |
|---|---|---|---|
| Input / output priceUSD per 1M tokens | Claude 4.1 Opus ThinkingNot available | Claude Haiku 4.5 ThinkingNot available | A complete price comparison is not available. |
| Generation speedtokens per second | Claude 4.1 Opus Thinking29 tok/s | Claude Haiku 4.5 ThinkingNot available | A complete speed comparison is not available. |
| First-answer latencyseconds to first token | Claude 4.1 Opus Thinking15.00 s | Claude Haiku 4.5 ThinkingNot available | A complete latency comparison is not available. |
| Context windowmaximum listed tokens | Claude 4.1 Opus Thinking200K | Claude Haiku 4.5 Thinking200K | Listed context windows are equal. |
Benchmark Deep Dive
Agentic1 benchmarks
| Benchmark | Claude 4.1 Opus Thinking | Claude Haiku 4.5 Thinking | Result |
|---|---|---|---|
| τ²-bench resultsSource | 71.4% | — | Not comparable |
Coding2 benchmarks
Reasoning2 benchmarks
Knowledge3 benchmarks
Multimodal2 benchmarks
Inst. Following1 benchmarks
| Benchmark | Claude 4.1 Opus Thinking | Claude Haiku 4.5 Thinking | Result |
|---|---|---|---|
| AA-IFBenchSource | 55.4% | — | Not comparable |
Frequently Asked Questions (3)
Can I compare Claude 4.1 Opus Thinking and Claude Haiku 4.5 Thinking on BenchLM yet?
Not fully yet. BenchLM is tracking both models, but the sourced benchmark breakdown for this comparison is still coming soon.
Why does this comparison show “coming soon”?
BenchLM only shows category winners and benchmark-level calls when we have sourced results that can be compared fairly. For these models, the public benchmark coverage is not complete enough yet.
What data is available for Claude 4.1 Opus Thinking and Claude Haiku 4.5 Thinking today?
Claude 4.1 Opus Thinking: Pricing unavailable Both model pages still include creator, context window, reasoning mode, and other metadata while benchmark coverage fills in.
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