Model comparison
Claude 4.1 Opus Thinking vs Claude Opus 4.5
Head-to-head evidence from 9 shared benchmark results across 6 categories. Overall scores shown here use the public BenchAlign v5 ranking lane.
Public leaderboard positions: Claude 4.1 Opus Thinking #184 (Supported); Claude Opus 4.5 #34 (Supported). Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.
Evidence parity. Claude 4.1 Opus Thinking and Claude Opus 4.5 share 9 comparable benchmark results. 0 of 8 categories are comparable. 0 results are unique to Claude 4.1 Opus Thinking; 50 to Claude Opus 4.5.
Updated July 22, 2026- Shared results
- 9
- Claude 4.1 Opus Thinking only
- 0
- Claude Opus 4.5 only
- 50
- Comparable categories
- 0 / 8
Benchmark data for Claude 4.1 Opus Thinking and Claude Opus 4.5 is coming soon on BenchLM.
Confidence note. This is a partial-evidence comparison with 9 shared benchmark results across 6 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.
Category breakdown
Exact category averages are shown below. Not measured means BenchLM does not have enough sourced public coverage for that model and category.
| Category | Claude 4.1 Opus Thinking | Δ | Claude Opus 4.5 |
|---|---|---|---|
| Agentic | Claude 4.1 Opus ThinkingNot measured | MarginNo overlap | Claude Opus 4.562.6 |
| Coding | Claude 4.1 Opus ThinkingNot measured | MarginNo overlap | Claude Opus 4.571.7 |
| Reasoning | Claude 4.1 Opus ThinkingNot measured | MarginNo overlap | Claude Opus 4.564.4 |
| Knowledge | Claude 4.1 Opus ThinkingNot measured | MarginNo overlap | Claude Opus 4.558.1 |
| Math | Claude 4.1 Opus ThinkingNot measured | MarginNo overlap | Claude Opus 4.557.5 |
| Multilingual | Claude 4.1 Opus ThinkingNot measured | MarginNo overlap | Claude Opus 4.585.7 |
| Multimodal | Claude 4.1 Opus ThinkingNot measured | MarginNo overlap | Claude Opus 4.569.9 |
| Inst. Following | Claude 4.1 Opus ThinkingNot measured | MarginNo overlap | Claude Opus 4.569.5 |
Operational comparison
Runtime and commercial metrics are compared only when both models have a complete sourced value.
| Metric | Claude 4.1 Opus Thinking | Claude Opus 4.5 | Comparison |
|---|---|---|---|
| Input / output priceUSD per 1M tokens | Claude 4.1 Opus ThinkingNot available | Claude Opus 4.5$5 input / $25 output | A complete price comparison is not available. |
| Generation speedtokens per second | Claude 4.1 Opus Thinking29 tok/s | Claude Opus 4.546 tok/s | Claude Opus 4.5 has the higher measured throughput. |
| First-answer latencyseconds to first token | Claude 4.1 Opus Thinking15.00 s | Claude Opus 4.51.01 s | Claude Opus 4.5 reaches the first token sooner. |
| Context windowmaximum listed tokens | Claude 4.1 Opus Thinking200K | Claude Opus 4.5200K | Listed context windows are equal. |
Benchmark Deep Dive
Agentic16 benchmarks
| Benchmark | Claude 4.1 Opus Thinking | Claude Opus 4.5 | Result |
|---|---|---|---|
| τ²-bench resultsSource | 71.4% | 86.3% | Claude Opus 4.5 leads |
| Terminal-Bench 2.0Source | — | 59.3% | Not comparable |
| OSWorld-VerifiedSource | — | 66.3% | Not comparable |
| OSWorldSource | — | 66.3% | Not comparable |
| Claw-EvalSource | — | 59.6% | Not comparable |
| QwenClawBenchSource | — | 52.3% | Not comparable |
| τ³-bench resultsSource | — | 70.2% | Not comparable |
| VITA-BenchSource | — | 23.3% | Not comparable |
| DeepPlanningSource | — | 26.4% | Not comparable |
| ToolathlonSource | — | 43.5% | Not comparable |
| MCP AtlasSource | — | 42.3% | Not comparable |
| MCP-TasksSource | — | 71.8% | Not comparable |
| WideResearchSource | — | 76.4% | Not comparable |
| CyberGymSource | — | 50.6% | Not comparable |
| Gert LabsSource | — | 64.23% | Not comparable |
| JobBenchSource | — | 32.3% | Not comparable |
Coding6 benchmarks
| Benchmark | Claude 4.1 Opus Thinking | Claude Opus 4.5 | Result |
|---|---|---|---|
| AA-SciCodeSource | 40.9% | 47.0% | Claude Opus 4.5 leads |
| SWE-bench VerifiedSource | — | 80.9% | Not comparable |
| LiveCodeBench v6Source | — | 84.8% | Not comparable |
| SWE-bench ProSource | — | 57.1% | Not comparable |
| SWE MultilingualSource | — | 77.5% | Not comparable |
| NL2RepoSource | — | 43.2% | Not comparable |
Reasoning4 benchmarks
Knowledge13 benchmarks
| Benchmark | Claude 4.1 Opus Thinking | Claude Opus 4.5 | Result |
|---|---|---|---|
| Artificial Analysis Intelligence IndexSource | 33.7% | 34.7% | Claude Opus 4.5 leads |
| AA-GPQA DiamondSource | 80.9% | 81.0% | Claude Opus 4.5 leads |
| AA-HLESource | 11.9% | 12.9% | Claude Opus 4.5 leads |
| GPQASource | — | 87% | Not comparable |
| SuperGPQASource | — | 70.6% | Not comparable |
| MMLU-ProSource | — | 89.5% | Not comparable |
| MMLU-ReduxSource | — | 96.6% | Not comparable |
| C-EvalSource | — | 92.2% | Not comparable |
| HLESource | — | 30.8% | Not comparable |
| AA-Omniscience IndexSource | — | -3.9% | Not comparable |
| AA-Omniscience AccuracySource | — | 40.7% | Not comparable |
| AA-Omniscience Hallucination RateSource | — | 75.4% | Not comparable |
| AA MMLU-ProSource | — | 88.9% | Not comparable |
Math7 benchmarks
| Benchmark | Claude 4.1 Opus Thinking | Claude Opus 4.5 | Result |
|---|---|---|---|
| AIME26Source | — | 95.1% | Not comparable |
| HMMT Feb 2025Source | — | 92.9% | Not comparable |
| HMMT Nov 2025Source | — | 93.3% | Not comparable |
| HMMT Feb 2026Source | — | 85.3% | Not comparable |
| MMAnswerBenchSource | — | 84.0% | Not comparable |
| FrontierMath v2 (Tiers 1-3)Source | — | 20.690% | Not comparable |
| FrontierMath v2 (Tier 4)Source | — | 4.167% | Not comparable |
Multilingual2 benchmarks
Multimodal8 benchmarks
| Benchmark | Claude 4.1 Opus Thinking | Claude Opus 4.5 | Result |
|---|---|---|---|
| AA-MMMU-ProSource | 67.9% | 71.2% | Claude Opus 4.5 leads |
| MMMU-ProSource | — | 70.6% | Not comparable |
| MathVisionSource | — | 74.3% | Not comparable |
| CharXivSource | — | 68.5% | Not comparable |
| VideoMMMUSource | — | 84.4% | Not comparable |
| ScreenSpot ProSource | — | 45.7% | Not comparable |
| V*Source | — | 67.0% | Not comparable |
| Design Arena WebsiteSource | — | 1277 | Not comparable |
Frequently Asked Questions (3)
Can I compare Claude 4.1 Opus Thinking and Claude Opus 4.5 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 Opus 4.5 today?
Claude 4.1 Opus Thinking: Pricing unavailable Claude Opus 4.5: $5.00 input / $25.00 output per 1M tokens Both model pages still include creator, context window, reasoning mode, and other metadata while benchmark coverage fills in.
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