# Kimi K2.5 vs Step 3.7 Flash

> Side-by-side benchmark comparison for Kimi K2.5 and Step 3.7 Flash across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/kimi-k2-5-vs-step-3-7-flash
- Last updated: October 15, 2026

- Shared sourced benchmarks: 7
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Kimi K2.5 leads by point estimate. Conditional score ranges do not establish rank confidence. Choose using the category evidence and your own workload tests.

## Summary

- Kimi K2.5 has the higher overall point estimate 53.02 to 43.7. Conditional score ranges do not establish rank confidence.
- The clearest category separation is in coding, where the averages are 38.4 for Kimi K2.5 and 30.2 for Step 3.7 Flash.
- The biggest single benchmark swing is Toolathlon in Agentic, with scores of 27.8% and 49.5%.
- Step 3.7 Flash is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.

## Model Snapshot

| Property | Kimi K2.5 | Step 3.7 Flash |
|----------|----------|----------|
| Creator | Moonshot AI | StepFun |
| Type | Open Weight | Open Weight |
| Reasoning | Non-Reasoning | Reasoning |
| Context | 256K | 256K |
| Overall Score | 53.02 | 43.7 |
| Benchmarks Covered | 68 | 11 |
| Pricing (input/output) | $0.60 / $3.00 | $0.20 / $1.15 |

## Category Breakdown

### Agentic

- Winner: Directional only
- Kimi K2.5 public-lane score: 40.8 (Estimated · #63/126)
- Step 3.7 Flash public-lane score: 37.1 (Estimated · #74/126)

| Benchmark | Kimi K2.5 | Step 3.7 Flash | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.0 | 50.8% | Coming soon | Coming soon |
| BrowseComp | 60.6% | 75.8% | Step 3.7 Flash |
| OSWorld-Verified | 63.3% | Coming soon | Coming soon |
| Claw-Eval | 52.3% | 67.1% | Step 3.7 Flash |
| QwenClawBench | 54.3% | Coming soon | Coming soon |
| τ³-bench results | 65.7% | Coming soon | Coming soon |
| DeepSearchQA | 77.1% | 92.8% | Step 3.7 Flash |
| DeepPlanning | 14.4% | Coming soon | Coming soon |
| Toolathlon | 27.8% | 49.5% | Step 3.7 Flash |
| MCP Atlas | 29.5% | Coming soon | Coming soon |
| MCP-Tasks | 59.1% | Coming soon | Coming soon |
| WideResearch | 72.7% | Coming soon | Coming soon |
| BFCL v4 | 68.3% | Coming soon | Coming soon |
| Gert Labs | 45.88% | 51.57% | Step 3.7 Flash |
| ResearchClawBench | 14.0% | Coming soon | Coming soon |
| JobBench | 8.7% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | Coming soon | 59.5% | Coming soon |
| HLE w/ tools | Coming soon | 47.2% | Coming soon |

### Coding

- Winner: Directional only
- Kimi K2.5 public-lane score: 38.4 (Estimated · #67/149)
- Step 3.7 Flash public-lane score: 30.2 (Estimated · #95/149)

| Benchmark | Kimi K2.5 | Step 3.7 Flash | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Verified | 76.8% | Coming soon | Coming soon |
| SWE-bench Verified* | 70.8% | Coming soon | Coming soon |
| LiveCodeBench v6 | 85.0% | Coming soon | Coming soon |
| SWE-bench Pro | 50.7% | 56.3% | Step 3.7 Flash |
| SWE Multilingual | 73% | Coming soon | Coming soon |
| SWE-Rebench | 58.5% | Coming soon | Coming soon |
| React Native Evals | 77.2% | Coming soon | Coming soon |
| NL2Repo | 32% | Coming soon | Coming soon |
| SciCode | 48.7% | Coming soon | Coming soon |
| Terminal-Bench 2.0 | 50.8% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | Coming soon | 59.5% | Coming soon |

### Reasoning

- Winner: Not comparable
- Kimi K2.5 public-lane score: 72.2 (Unranked · 3 rankable rows)
- Step 3.7 Flash public-lane score: 76.5 (Unranked · 2 rankable rows)

| Benchmark | Kimi K2.5 | Step 3.7 Flash | Winner |
|-----------|-----------|-----------|--------|
| LongBench v2 | 61% | Coming soon | Coming soon |

### Multimodal & Grounded

- Winner: Not comparable
- Kimi K2.5 public-lane score: 70.4 (#32/54)
- Step 3.7 Flash public-lane score: 75.4 (Unranked · 3 rankable rows)

| Benchmark | Kimi K2.5 | Step 3.7 Flash | Winner |
|-----------|-----------|-----------|--------|
| MMMU | 84.3% | Coming soon | Coming soon |
| MMMU-Pro | 78.5% | Coming soon | Coming soon |
| RealWorldQA | 81.0% | Coming soon | Coming soon |
| OmniDocBench 1.5 | 88.8% | Coming soon | Coming soon |
| Video-MME | 87.4% | Coming soon | Coming soon |
| Video-MME (with subtitle) | 87.4% | Coming soon | Coming soon |
| Video-MME (w/o subtitle) | 83.2% | Coming soon | Coming soon |
| MathVision | 84.2% | Coming soon | Coming soon |
| We-Math | 84.7% | Coming soon | Coming soon |
| DynaMath | 84.4% | Coming soon | Coming soon |
| SimpleVQA | 71.2% | 79.2% | Step 3.7 Flash |
| MMLongBench-Doc | 58.5% | Coming soon | Coming soon |
| CC-OCR | 79.7% | Coming soon | Coming soon |
| AI2D_TEST | 90.8% | Coming soon | Coming soon |
| CountBench | 94.1% | Coming soon | Coming soon |
| RefCOCO (avg) | 87.8% | Coming soon | Coming soon |
| MMVU | 80.4% | Coming soon | Coming soon |
| VideoMMMU | 86.6% | Coming soon | Coming soon |
| MLVU (M-Avg) | 85.0% | Coming soon | Coming soon |
| CharXiv | 77.5% | Coming soon | Coming soon |
| V* | Coming soon | 95.3% | Coming soon |

### Knowledge

- Winner: Directional only
- Kimi K2.5 public-lane score: 51.3 (Estimated · #74/182)
- Step 3.7 Flash public-lane score: 45 (Estimated · #96/182)

| Benchmark | Kimi K2.5 | Step 3.7 Flash | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 87.6% | Coming soon | Coming soon |
| GPQA-D | 87.6% | Coming soon | Coming soon |
| SuperGPQA | 69.2% | Coming soon | Coming soon |
| MMLU-Pro | 87.1% | Coming soon | Coming soon |
| MMLU-Pro (Arcee) | 87.1% | Coming soon | Coming soon |
| MMLU-Redux | 94.5% | Coming soon | Coming soon |
| C-Eval | 94% | Coming soon | Coming soon |
| HLE | 30.1% | Coming soon | Coming soon |

### Multilingual

- Winner: Not comparable
- Kimi K2.5 public-lane score: 87.3 (#8/17)
- Step 3.7 Flash public-lane score: Coming soon

| Benchmark | Kimi K2.5 | Step 3.7 Flash | Winner |
|-----------|-----------|-----------|--------|
| MMLU-ProX | 82.3% | Coming soon | Coming soon |
| NOVA-63 | 56.0% | Coming soon | Coming soon |
| INCLUDE | 83.3% | Coming soon | Coming soon |
| PolyMath | 43.1% | Coming soon | Coming soon |
| MAXIFE | 72.8% | Coming soon | Coming soon |

### Instruction Following

- Winner: Directional only
- Kimi K2.5 public-lane score: 85.8 (#46/146)
- Step 3.7 Flash public-lane score: 82.1 (#54/146)

| Benchmark | Kimi K2.5 | Step 3.7 Flash | Winner |
|-----------|-----------|-----------|--------|
| IFEval | 93.9% | Coming soon | Coming soon |

### Mathematics

- Winner: Not comparable
- Kimi K2.5 public-lane score: 83.3 (Unranked · 7 rankable rows)
- Step 3.7 Flash public-lane score: Coming soon

| Benchmark | Kimi K2.5 | Step 3.7 Flash | Winner |
|-----------|-----------|-----------|--------|
| AIME 2025 | 96.1% | Coming soon | Coming soon |
| AIME26 | 95.8% | Coming soon | Coming soon |
| AIME25 (Arcee) | 96.3% | Coming soon | Coming soon |
| HMMT Feb 2025 | 95.4% | Coming soon | Coming soon |
| HMMT Nov 2025 | 91.1% | Coming soon | Coming soon |
| HMMT Feb 2026 | 87.1% | Coming soon | Coming soon |
| MMAnswerBench | 81.8% | Coming soon | Coming soon |

## FAQ

### Which is better overall, Kimi K2.5 or Step 3.7 Flash?

Kimi K2.5 has the higher overall point estimate. Conditional score ranges do not establish rank confidence.

### Where is the biggest gap between Kimi K2.5 and Step 3.7 Flash?

The widest category gap is in coding, where the averages are 38.4 for Kimi K2.5 and 30.2 for Step 3.7 Flash.

### How many benchmarks does Kimi K2.5 cover on BenchLM?

Kimi K2.5 currently has 68 sourced benchmark scores on BenchLM.

### How many benchmarks does Step 3.7 Flash cover on BenchLM?

Step 3.7 Flash currently has 11 sourced benchmark scores on BenchLM.

## Related Comparisons

- [Kimi K2.5 vs Kimi K2.5 (Reasoning)](/compare/kimi-k2-5-vs-kimi-k2-5-reasoning)
- [Step 3.7 Flash vs Kimi K2.5 (Reasoning)](/compare/kimi-k2-5-reasoning-vs-step-3-7-flash)
- [Kimi K2.5 vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-kimi-k2-5)
- [Step 3.7 Flash vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-step-3-7-flash)

## Explore More

- [Kimi K2.5 profile](/models/kimi-k2-5)
- [Step 3.7 Flash profile](/models/step-3-7-flash)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)