# Claude Sonnet 5 vs Kimi K3.1 Pro

> Side-by-side benchmark comparison for Claude Sonnet 5 and Kimi K3.1 Pro across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/claude-sonnet-5-vs-kimi-3-1-pro
- Last updated: October 23, 2026

- Shared sourced benchmarks: 6
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Pick Kimi K3.1 Pro if you want the stronger benchmark profile. Claude Sonnet 5 only makes more sense when its price, context window, or workload-specific category wins matter more than the overall score.

## Summary

- Kimi K3.1 Pro leads overall 82 to 64.84.
- The clearest category separation is in multimodal & grounded, where the averages are 80.6 for Claude Sonnet 5 and 98 for Kimi K3.1 Pro.
- The biggest single benchmark swing is HLE w/ tools in Agentic, with scores of 57.4% and 70.0%.
- Kimi K3.1 Pro also has the larger context window at 1.05M.

## Model Snapshot

| Property | Claude Sonnet 5 | Kimi K3.1 Pro |
|----------|----------|----------|
| Creator | Anthropic | Moonshot AI |
| Type | Proprietary | Pending |
| Reasoning | Reasoning | Reasoning |
| Context | 1M | 1.05M |
| Overall Score | 64.84 | null |
| Benchmarks Covered | 30 | 42 |
| Pricing (input/output) | $2.00 / $10.00 | $2.00 / $10.00 |

## Category Breakdown

### Agentic

- Winner: Not comparable
- Claude Sonnet 5 public-lane score: 66.3 (Supported · #15/132)
- Kimi K3.1 Pro public-lane score: Coming soon

| Benchmark | Claude Sonnet 5 | Kimi K3.1 Pro | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 3.0 | 14.6% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | 80.4% | Coming soon | Coming soon |
| BrowseComp | 84.7% | 92.1% | Kimi K3.1 Pro |
| HLE w/ tools | 57.4% | 70.0% | Kimi K3.1 Pro |
| OSWorld-Verified | 81.2% | Coming soon | Coming soon |
| Terminal-Bench 2.1 (Vals) | 74.5% | Coming soon | Coming soon |
| ApprenticeBench | 16% | Coming soon | Coming soon |
| MazeBench | 0% | Coming soon | Coming soon |
| Terminal-Bench 4.0 | Coming soon | 65.70% | Coming soon |
| Terminal-Bench-Science 0.1 | Coming soon | 38.1% | Coming soon |
| BioMysteryBench | Coming soon | 80.6% | Coming soon |
| Agents' Last Exam | Coming soon | 43.2% | Coming soon |
| Agents' Last Exam (CLI) | Coming soon | 44.2% | Coming soon |
| APEX-Agents | Coming soon | 67.2% | Coming soon |
| Frontier Finance | Coming soon | 58.6% | Coming soon |
| HANDBOOK.md | Coming soon | 44.6% | Coming soon |
| OSWorld 2.0 | Coming soon | 79.6% | Coming soon |
| Business Operation | Coming soon | 37.8% | Coming soon |
| Financial Modeling | Coming soon | 57.6% | Coming soon |
| Financial Research | Coming soon | 70.4% | Coming soon |
| Kimi Hallu Bench Hard (tools) | Coming soon | 8.3% | Coming soon |
| ExploitGym | Coming soon | 20.7% | Coming soon |

### Coding

- Winner: Not comparable
- Claude Sonnet 5 public-lane score: 57.5 (Supported · #26/153)
- Kimi K3.1 Pro public-lane score: Coming soon

| Benchmark | Claude Sonnet 5 | Kimi K3.1 Pro | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Verified | 85.2% | Coming soon | Coming soon |
| SWE-bench Pro | 63.2% | Coming soon | Coming soon |
| SWE Multilingual | 78.3% | Coming soon | Coming soon |
| SWE Multimodal | 28.1% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | 80.4% | Coming soon | Coming soon |
| FrontierCode 1.1 Main | 42.7% | Coming soon | Coming soon |
| CursorBench 3.2 | 61.5% | Coming soon | Coming soon |
| VulcanBench CII v1 | 89.2% | Coming soon | Coming soon |
| LiveCodeBench (Vals) | 82.4% | Coming soon | Coming soon |
| SWE-bench (Vals) | 79.6% | Coming soon | Coming soon |
| CursorBench 4.0 | 34.1% | Coming soon | Coming soon |
| DeepSWE | Coming soon | 75.5% | Coming soon |
| ProgramBench (binary) | Coming soon | 31.5% | Coming soon |
| Kimi Code Bench v2 | Coming soon | 77.1% | Coming soon |
| Kimi Code Bench 3.0 Long-horizon | Coming soon | 61.2% | Coming soon |
| sweMarathon | Coming soon | 51.7% | Coming soon |
| PostTrainBench v1.2 | Coming soon | 36.5% | Coming soon |

### Reasoning

- Winner: Not comparable
- Claude Sonnet 5 public-lane score: 81.3 (Unranked · 2 rankable rows)
- Kimi K3.1 Pro public-lane score: Coming soon

### Multimodal & Grounded

- Winner: Directional only
- Claude Sonnet 5 public-lane score: 80.6 (#17/56)
- Kimi K3.1 Pro public-lane score: 98 (#1/56)

| Benchmark | Claude Sonnet 5 | Kimi K3.1 Pro | Winner |
|-----------|-----------|-----------|--------|
| ParseBench | 62.13% | Coming soon | Coming soon |
| CharXiv | 88.3% | 93.4% | Kimi K3.1 Pro |
| CharXiv w/o tools | 77% | 89% | Kimi K3.1 Pro |
| OfficeQA Pro | Coming soon | 67.4% | Coming soon |
| OfficeQA Pro v2 | Coming soon | 64.4% | Coming soon |
| BenchCAD Vision2Code (no tools) | Coming soon | 0.728 | Coming soon |
| BenchCAD Vision2Code (tools) | Coming soon | 0.927 | Coming soon |
| MMMU-Pro | Coming soon | 84.1% | Coming soon |
| MMMU-Pro w/ Python | Coming soon | 90% | Coming soon |
| Chartography (tools) | Coming soon | 90.2% | Coming soon |
| BabyVision w/ Python | Coming soon | 95.4% | Coming soon |
| ZeroBench | Coming soon | 39.0% | Coming soon |
| ZeroBench w/ Python | Coming soon | 63.0% | Coming soon |
| GDP.pdf (Gemini judge) | Coming soon | 34.6% | Coming soon |
| GDP.pdf w/ Python (Gemini judge) | Coming soon | 85.7% | Coming soon |
| PerceptionBench | Coming soon | 68.3% | Coming soon |

### Knowledge

- Winner: Not comparable
- Claude Sonnet 5 public-lane score: 64.8 (Supported · #33/187)
- Kimi K3.1 Pro public-lane score: Coming soon

| Benchmark | Claude Sonnet 5 | Kimi K3.1 Pro | Winner |
|-----------|-----------|-----------|--------|
| HLE | 57.4% | 70% | Kimi K3.1 Pro |
| HLE w/o tools | 43.2% | 51.1% | Kimi K3.1 Pro |
| HLE-Verified | 31.0% | Coming soon | Coming soon |
| LABBench2 | 80.1% | Coming soon | Coming soon |
| GPQA Diamond (Vals) | 88.9% | Coming soon | Coming soon |
| MMLU-Pro (Vals) | 87.5% | Coming soon | Coming soon |
| GPQA | Coming soon | 94.2% | Coming soon |
| GPQA-D | Coming soon | 94.2% | Coming soon |
| Kimi Hallu Bench | Coming soon | 5.4% | Coming soon |

### Mathematics

- Winner: Not comparable
- Claude Sonnet 5 public-lane score: 69.4 (Unranked · 2 rankable rows)
- Kimi K3.1 Pro public-lane score: Coming soon

| Benchmark | Claude Sonnet 5 | Kimi K3.1 Pro | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath v2 (Tiers 1-3) | 65.614% | Coming soon | Coming soon |
| FrontierMath v2 (Tier 4) | 29.268% | Coming soon | Coming soon |

## FAQ

### Which is better overall, Claude Sonnet 5 or Kimi K3.1 Pro?

Kimi K3.1 Pro is ahead overall on BenchLM right now.

### Where is the biggest gap between Claude Sonnet 5 and Kimi K3.1 Pro?

The widest category gap is in multimodal & grounded, where the averages are 80.6 for Claude Sonnet 5 and 98 for Kimi K3.1 Pro.

### How many benchmarks does Claude Sonnet 5 cover on BenchLM?

Claude Sonnet 5 currently has 30 sourced benchmark scores on BenchLM.

### How many benchmarks does Kimi K3.1 Pro cover on BenchLM?

Kimi K3.1 Pro currently has 42 sourced benchmark scores on BenchLM.

## Related Comparisons

- [Claude Sonnet 5 vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-claude-sonnet-5)
- [Kimi K3.1 Pro vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-kimi-3-1-pro)
- [Claude Sonnet 5 vs GPT-6.1 Sol](/compare/claude-sonnet-5-vs-gpt-6-1-sol)
- [Kimi K3.1 Pro vs GPT-6.1 Sol](/compare/gpt-6-1-sol-vs-kimi-3-1-pro)

## Explore More

- [Claude Sonnet 5 profile](/models/claude-sonnet-5)
- [Kimi K3.1 Pro profile](/models/kimi-3-1-pro)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)