# Claude Opus 4.5 vs Kimi K2.6

> Side-by-side benchmark comparison for Claude Opus 4.5 and Kimi K2.6 across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/claude-opus-4-5-vs-kimi-2-6
- Last updated: October 10, 2026

- Shared sourced benchmarks: 23
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Kimi K2.6 leads by point estimate. Conditional score ranges do not establish rank confidence. Choose using the category evidence and your own workload tests.

## Summary

- Kimi K2.6 has the higher overall point estimate 58.74 to 54.14. Conditional score ranges do not establish rank confidence.
- The clearest category separation is in multimodal & grounded, where the averages are 48.6 for Claude Opus 4.5 and 73.8 for Kimi K2.6.
- The biggest single benchmark swing is V* in Multimodal & Grounded, with scores of 67.0% and 96.9%.
- Kimi K2.6 is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.
- Kimi K2.6 also has the larger context window at 256K.

## Model Snapshot

| Property | Claude Opus 4.5 | Kimi K2.6 |
|----------|----------|----------|
| Creator | Anthropic | Moonshot AI |
| Type | Proprietary | Open Weight |
| Reasoning | Non-Reasoning | Reasoning |
| Context | 200K | 256K |
| Overall Score | 54.14 | 58.74 |
| Benchmarks Covered | 61 | 37 |
| Pricing (input/output) | $5.00 / $25.00 | $0.95 / $4.00 |

## Category Breakdown

### Agentic

- Winner: Directional only
- Claude Opus 4.5 public-lane score: 31.2 (Estimated · #86/123)
- Kimi K2.6 public-lane score: 43.7 (Supported · #57/123)

| Benchmark | Claude Opus 4.5 | Kimi K2.6 | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.0 | 59.3% | 66.7% | Kimi K2.6 |
| OSWorld-Verified | 66.3% | 73.1% | Kimi K2.6 |
| OSWorld | 66.3% | Coming soon | Coming soon |
| Claw-Eval | 59.6% | 62.3% | Kimi K2.6 |
| QwenClawBench | 52.3% | Coming soon | Coming soon |
| τ³-bench results | 70.2% | Coming soon | Coming soon |
| VITA-Bench | 23.3% | Coming soon | Coming soon |
| DeepPlanning | 26.4% | Coming soon | Coming soon |
| Toolathlon | 43.5% | 50% | Kimi K2.6 |
| MCP Atlas | 42.3% | 55.9% | Kimi K2.6 |
| MCP-Tasks | 71.8% | Coming soon | Coming soon |
| WideResearch | 76.4% | 80.8% | Kimi K2.6 |
| CyberGym | 50.6% | Coming soon | Coming soon |
| Gert Labs | 64.23% | 56.82% | Claude Opus 4.5 |
| JobBench | 32.3% | Coming soon | Coming soon |
| BrowseComp | Coming soon | 83.2% | Coming soon |
| DeepSearchQA | Coming soon | 92.5% | Coming soon |
| ResearchClawBench | Coming soon | 18.0% | Coming soon |
| OSWorld 2.0 | Coming soon | 4.6% | Coming soon |
| Terminal-Bench 2.1 (Vals) | Coming soon | 53.6% | Coming soon |

### Coding

- Winner: Directional only
- Claude Opus 4.5 public-lane score: 41.2 (Estimated · #61/146)
- Kimi K2.6 public-lane score: 43.9 (Supported · #54/146)

| Benchmark | Claude Opus 4.5 | Kimi K2.6 | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Verified | 80.9% | 80.2% | Claude Opus 4.5 |
| LiveCodeBench v6 | 84.8% | 89.6% | Kimi K2.6 |
| SWE-bench Pro | 57.1% | 58.6% | Kimi K2.6 |
| SWE Multilingual | 77.5% | 76.7% | Claude Opus 4.5 |
| NL2Repo | 43.2% | Coming soon | Coming soon |
| Terminal-Bench 2.0 | 59.3% | 66.7% | Kimi K2.6 |
| SciCode | Coming soon | 52.2% | Coming soon |
| Vibe Code Bench | Coming soon | 37.89% | Coming soon |
| cursorBench31 | Coming soon | 47.6% | Coming soon |
| LiveCodeBench (Vals) | Coming soon | 86.8% | Coming soon |
| SWE-bench (Vals) | Coming soon | 76.2% | Coming soon |

### Reasoning

- Winner: Not comparable
- Claude Opus 4.5 public-lane score: 78.4 (Unranked · 4 rankable rows)
- Kimi K2.6 public-lane score: Coming soon

| Benchmark | Claude Opus 4.5 | Kimi K2.6 | Winner |
|-----------|-----------|-----------|--------|
| LongBench v2 | 64.4% | Coming soon | Coming soon |
| AI-Needle | 74% | Coming soon | Coming soon |

### Multimodal & Grounded

- Winner: Kimi K2.6
- Claude Opus 4.5 public-lane score: 48.6 (#49/54)
- Kimi K2.6 public-lane score: 73.8 (#27/54)

| Benchmark | Claude Opus 4.5 | Kimi K2.6 | Winner |
|-----------|-----------|-----------|--------|
| MMMU | 80.7% | Coming soon | Coming soon |
| MMMU-Pro | 70.6% | 79.4% | Kimi K2.6 |
| RealWorldQA | 77.0% | Coming soon | Coming soon |
| OmniDocBench 1.5 | 87.7% | Coming soon | Coming soon |
| Video-MME (with subtitle) | 77.6% | Coming soon | Coming soon |
| Video-MME (w/o subtitle) | 81.4% | Coming soon | Coming soon |
| MathVision | 74.3% | 87.4% | Kimi K2.6 |
| We-Math | 70.0% | Coming soon | Coming soon |
| DynaMath | 79.7% | Coming soon | Coming soon |
| SimpleVQA | 65.7% | Coming soon | Coming soon |
| CharXiv | 68.5% | 80.4% | Kimi K2.6 |
| CountBench | 90.6% | Coming soon | Coming soon |
| AI2D_TEST | 87.7% | Coming soon | Coming soon |
| ERQA | 46.8% | Coming soon | Coming soon |
| VideoMMMU | 84.4% | Coming soon | Coming soon |
| MLVU (M-Avg) | 81.7% | Coming soon | Coming soon |
| ScreenSpot Pro | 45.7% | Coming soon | Coming soon |
| V* | 67.0% | 96.9% | Kimi K2.6 |
| MMMU-Pro w/ Python | Coming soon | 80.1% | Coming soon |

### Knowledge

- Winner: Directional only
- Claude Opus 4.5 public-lane score: 51.1 (Estimated · #71/177)
- Kimi K2.6 public-lane score: 59.8 (Supported · #45/177)

| Benchmark | Claude Opus 4.5 | Kimi K2.6 | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 87% | 90.5% | Kimi K2.6 |
| SuperGPQA | 70.6% | Coming soon | Coming soon |
| MMLU-Pro | 89.5% | Coming soon | Coming soon |
| MMLU-Redux | 96.6% | Coming soon | Coming soon |
| C-Eval | 92.2% | Coming soon | Coming soon |
| HLE | 30.8% | 34.7% | Kimi K2.6 |
| GPQA-D | Coming soon | 90.5% | Coming soon |
| GPQA Diamond (Vals) | Coming soon | 89.1% | Coming soon |
| MMLU-Pro (Vals) | Coming soon | 87.6% | Coming soon |

### Multilingual

- Winner: Not comparable
- Claude Opus 4.5 public-lane score: 96.5 (#2/17)
- Kimi K2.6 public-lane score: Coming soon

| Benchmark | Claude Opus 4.5 | Kimi K2.6 | Winner |
|-----------|-----------|-----------|--------|
| MMLU-ProX | 85.7% | Coming soon | Coming soon |
| NOVA-63 | 56.7% | Coming soon | Coming soon |
| INCLUDE | 86.2% | Coming soon | Coming soon |
| PolyMath | 79.0% | Coming soon | Coming soon |
| MAXIFE | 79.2% | Coming soon | Coming soon |

### Instruction Following

- Winner: Not comparable
- Claude Opus 4.5 public-lane score: 31.9 (#115/127)
- Kimi K2.6 public-lane score: Coming soon

| Benchmark | Claude Opus 4.5 | Kimi K2.6 | Winner |
|-----------|-----------|-----------|--------|
| IFEval | 90.9% | Coming soon | Coming soon |
| IFBench | 58% | Coming soon | Coming soon |

### Mathematics

- Winner: Kimi K2.6
- Claude Opus 4.5 public-lane score: 59 (#6/7)
- Kimi K2.6 public-lane score: 72.2 (#1/7)

| Benchmark | Claude Opus 4.5 | Kimi K2.6 | Winner |
|-----------|-----------|-----------|--------|
| AIME26 | 95.1% | 96.4% | Kimi K2.6 |
| HMMT Feb 2025 | 92.9% | Coming soon | Coming soon |
| HMMT Nov 2025 | 93.3% | Coming soon | Coming soon |
| HMMT Feb 2026 | 85.3% | 92.7% | Kimi K2.6 |
| MMAnswerBench | 84.0% | 86.0% | Kimi K2.6 |
| FrontierMath v2 (Tiers 1-3) | 20.690% | 38.966% | Kimi K2.6 |
| FrontierMath v2 (Tier 4) | 4.167% | 14.580% | Kimi K2.6 |

## FAQ

### Which is better overall, Claude Opus 4.5 or Kimi K2.6?

Kimi K2.6 has the higher overall point estimate. Conditional score ranges do not establish rank confidence.

### Where is the biggest gap between Claude Opus 4.5 and Kimi K2.6?

The widest category gap is in multimodal & grounded, where the averages are 48.6 for Claude Opus 4.5 and 73.8 for Kimi K2.6.

### How many benchmarks does Claude Opus 4.5 cover on BenchLM?

Claude Opus 4.5 currently has 61 sourced benchmark scores on BenchLM.

### How many benchmarks does Kimi K2.6 cover on BenchLM?

Kimi K2.6 currently has 37 sourced benchmark scores on BenchLM.

## Related Comparisons

- [Claude Opus 4.5 vs Claude Opus 4.5 Thinking](/compare/claude-opus-4-5-vs-claude-opus-4-5-thinking)
- [Kimi K2.6 vs Claude Opus 4.5 Thinking](/compare/claude-opus-4-5-thinking-vs-kimi-2-6)
- [Claude Opus 4.5 vs Claude Opus 5.5](/compare/claude-opus-4-5-vs-claude-opus-5-5)
- [Kimi K2.6 vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-kimi-2-6)

## Explore More

- [Claude Opus 4.5 profile](/models/claude-opus-4-5)
- [Kimi K2.6 profile](/models/kimi-2-6)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)