# Claude Sonnet 4.6 vs Kimi K2

> Side-by-side benchmark comparison for Claude Sonnet 4.6 and Kimi K2 across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/claude-sonnet-4-6-vs-kimi-k2
- Last updated: October 17, 2026

- Shared sourced benchmarks: 5
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Claude Sonnet 4.6 leads by point estimate. Conditional score ranges do not establish rank confidence. Choose using the category evidence and your own workload tests.

## Summary

- Claude Sonnet 4.6 has the higher overall point estimate 55.89 to 33.48. Conditional score ranges do not establish rank confidence.
- The clearest category separation is in knowledge, where the averages are 55.4 for Claude Sonnet 4.6 and 36.1 for Kimi K2.
- The biggest single benchmark swing is HLE in Knowledge, with scores of 49% and 4.7%.
- Kimi K2 is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.
- Claude Sonnet 4.6 also has the larger context window at 200K.

## Model Snapshot

| Property | Claude Sonnet 4.6 | Kimi K2 |
|----------|----------|----------|
| Creator | Anthropic | Moonshot AI |
| Type | Proprietary | Proprietary |
| Reasoning | Non-Reasoning | Non-Reasoning |
| Context | 200K | 128K |
| Overall Score | 55.89 | 33.48 |
| Benchmarks Covered | 28 | 13 |
| Pricing (input/output) | $3.00 / $15.00 | $0.60 / $2.50 |

## Category Breakdown

### Agentic

- Winner: Not comparable
- Claude Sonnet 4.6 public-lane score: 46.3 (Supported · #55/128)
- Kimi K2 public-lane score: Coming soon

| Benchmark | Claude Sonnet 4.6 | Kimi K2 | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.0 | 59.1% | Coming soon | Coming soon |
| OSWorld-Verified | 72.1% | Coming soon | Coming soon |
| Claw-Eval | 67.8% | Coming soon | Coming soon |
| CyberGym | 65.2% | Coming soon | Coming soon |
| Gert Labs | 62.92% | Coming soon | Coming soon |
| OSWorld 2.0 | 8.3% | Coming soon | Coming soon |
| JobBench | 36.9% | Coming soon | Coming soon |
| Terminal-Bench 2.1 (Vals) | 57.3% | Coming soon | Coming soon |
| ApprenticeBench | 2% | Coming soon | Coming soon |
| MazeBench | 0% | Coming soon | Coming soon |

### Coding

- Winner: Not comparable
- Claude Sonnet 4.6 public-lane score: 44.7 (Supported · #54/150)
- Kimi K2 public-lane score: Coming soon

| Benchmark | Claude Sonnet 4.6 | Kimi K2 | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Verified | 79.6% | 65.8% | Claude Sonnet 4.6 |
| SWE-Rebench | 60.7% | Coming soon | Coming soon |
| React Native Evals | 80.6% | Coming soon | Coming soon |
| Terminal-Bench 2.0 | 59.1% | Coming soon | Coming soon |
| Vibe Code Bench | 51.48% | Coming soon | Coming soon |
| cursorBench31 | 48.8% | Coming soon | Coming soon |
| FrontierCode 1.1 Main | 24.3% | Coming soon | Coming soon |
| LiveCodeBench (Vals) | 82.1% | Coming soon | Coming soon |
| SWE-bench (Vals) | 77.4% | Coming soon | Coming soon |
| LiveCodeBench v6 | Coming soon | 53.7% | Coming soon |
| SWE Multilingual | Coming soon | 47.3% | Coming soon |

### Reasoning

- Winner: Not comparable
- Claude Sonnet 4.6 public-lane score: 62.8 (Unranked · 4 rankable rows)
- Kimi K2 public-lane score: 62.3 (Unranked · 2 rankable rows)

| Benchmark | Claude Sonnet 4.6 | Kimi K2 | Winner |
|-----------|-----------|-----------|--------|
| ARC-AGI-2 | 58.3% | Coming soon | Coming soon |
| ARC-AGI-1 | 86.00% | Coming soon | Coming soon |

### Multimodal & Grounded

- Winner: Not comparable
- Claude Sonnet 4.6 public-lane score: 58.7 (#45/54)
- Kimi K2 public-lane score: Coming soon

| Benchmark | Claude Sonnet 4.6 | Kimi K2 | Winner |
|-----------|-----------|-----------|--------|
| CharXiv | 77.4% | Coming soon | Coming soon |

### Knowledge

- Winner: Directional only
- Claude Sonnet 4.6 public-lane score: 55.4 (Supported · #58/184)
- Kimi K2 public-lane score: 36.1 (Estimated · #129/184)

| Benchmark | Claude Sonnet 4.6 | Kimi K2 | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 89.9% | 75.1% | Claude Sonnet 4.6 |
| SuperGPQA | 95% | 57.2% | Claude Sonnet 4.6 |
| MMLU-Pro | 79.2% | 81.1% | Kimi K2 |
| HLE | 49% | 4.7% | Claude Sonnet 4.6 |
| GPQA Diamond (Vals) | 85.6% | Coming soon | Coming soon |
| MMLU-Pro (Vals) | 87.3% | Coming soon | Coming soon |
| MMLU | Coming soon | 89.5% | Coming soon |
| SimpleQA | Coming soon | 31% | Coming soon |

### Instruction Following

- Winner: Directional only
- Claude Sonnet 4.6 public-lane score: 48 (#99/148)
- Kimi K2 public-lane score: 48.4 (#96/148)

| Benchmark | Claude Sonnet 4.6 | Kimi K2 | Winner |
|-----------|-----------|-----------|--------|
| IFEval | Coming soon | 89.8% | Coming soon |

### Mathematics

- Winner: Not comparable
- Claude Sonnet 4.6 public-lane score: Coming soon
- Kimi K2 public-lane score: 0 (#12/12)

| Benchmark | Claude Sonnet 4.6 | Kimi K2 | Winner |
|-----------|-----------|-----------|--------|
| AIME 2024 | Coming soon | 69.6% | Coming soon |
| AIME 2025 | Coming soon | 49.5% | Coming soon |
| MATH-500 | Coming soon | 97.4% | Coming soon |

## FAQ

### Which is better overall, Claude Sonnet 4.6 or Kimi K2?

Claude Sonnet 4.6 has the higher overall point estimate. Conditional score ranges do not establish rank confidence.

### Where is the biggest gap between Claude Sonnet 4.6 and Kimi K2?

The widest category gap is in knowledge, where the averages are 55.4 for Claude Sonnet 4.6 and 36.1 for Kimi K2.

### How many benchmarks does Claude Sonnet 4.6 cover on BenchLM?

Claude Sonnet 4.6 currently has 28 sourced benchmark scores on BenchLM.

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

Kimi K2 currently has 13 sourced benchmark scores on BenchLM.

## Related Comparisons

- [Claude Sonnet 4.6 vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-claude-sonnet-4-6)
- [Kimi K2 vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-kimi-k2)
- [Claude Sonnet 4.6 vs GPT-6.1 Sol](/compare/claude-sonnet-4-6-vs-gpt-6-1-sol)
- [Kimi K2 vs GPT-6.1 Sol](/compare/gpt-6-1-sol-vs-kimi-k2)

## Explore More

- [Claude Sonnet 4.6 profile](/models/claude-sonnet-4-6)
- [Kimi K2 profile](/models/kimi-k2)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)