# Gemini 3.5 Flash vs Kimi K3.1 Pro

> Side-by-side benchmark comparison for Gemini 3.5 Flash and Kimi K3.1 Pro across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

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

- Shared sourced benchmarks: 4
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Pick Kimi K3.1 Pro if you want the stronger benchmark profile. Gemini 3.5 Flash 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 61.84.
- The clearest category separation is in multimodal & grounded, where the averages are 87.4 for Gemini 3.5 Flash and 98 for Kimi K3.1 Pro.
- The biggest single benchmark swing is HLE in Knowledge, with scores of 40.2% and 70%.
- Gemini 3.5 Flash is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.
- Kimi K3.1 Pro also has the larger context window at 1.05M.

## Model Snapshot

| Property | Gemini 3.5 Flash | Kimi K3.1 Pro |
|----------|----------|----------|
| Creator | Google | Moonshot AI |
| Type | Proprietary | Pending |
| Reasoning | Reasoning | Reasoning |
| Context | 1M | 1.05M |
| Overall Score | 61.84 | null |
| Benchmarks Covered | 31 | 42 |
| Pricing (input/output) | $1.50 / $9.00 | $2.00 / $10.00 |

## Category Breakdown

### Agentic

- Winner: Not comparable
- Gemini 3.5 Flash public-lane score: 51.3 (Supported · #48/132)
- Kimi K3.1 Pro public-lane score: Coming soon

| Benchmark | Gemini 3.5 Flash | Kimi K3.1 Pro | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | 76.2% | Coming soon | Coming soon |
| MCP Atlas | 83.6% | Coming soon | Coming soon |
| Toolathlon | 56.5% | Coming soon | Coming soon |
| OSWorld-Verified | 78.4% | Coming soon | Coming soon |
| Finance Agent v2 | 57.9% | Coming soon | Coming soon |
| Gert Labs | 61.85% | Coming soon | Coming soon |
| ResearchClawBench | 18.0% | Coming soon | Coming soon |
| Terminal-Bench 2.1 (Vals) | 74.2% | 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 |
| HLE w/ tools | Coming soon | 70.0% | Coming soon |
| BrowseComp | Coming soon | 92.1% | 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
- Gemini 3.5 Flash public-lane score: 49.8 (Supported · #46/153)
- Kimi K3.1 Pro public-lane score: Coming soon

| Benchmark | Gemini 3.5 Flash | Kimi K3.1 Pro | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | 76.2% | Coming soon | Coming soon |
| SWE-bench Pro | 55.1% | Coming soon | Coming soon |
| Vibe Code Bench | 48.68% | Coming soon | Coming soon |
| cursorBench31 | 49.8% | Coming soon | Coming soon |
| CursorBench 3.2 | 48.8% | Coming soon | Coming soon |
| LiveCodeBench (Vals) | 87.6% | Coming soon | Coming soon |
| SWE-bench (Vals) | 78.8% | 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
- Gemini 3.5 Flash public-lane score: 70.9 (#16/27)
- Kimi K3.1 Pro public-lane score: Coming soon

| Benchmark | Gemini 3.5 Flash | Kimi K3.1 Pro | Winner |
|-----------|-----------|-----------|--------|
| MRCRv2 | 77.3% | Coming soon | Coming soon |
| MRCR 1M | 26.6% | Coming soon | Coming soon |
| ARC-AGI-2 | 72.1% | Coming soon | Coming soon |
| ARC-AGI-1 | 92.50% | Coming soon | Coming soon |

### Multimodal & Grounded

- Winner: Directional only
- Gemini 3.5 Flash public-lane score: 87.4 (#9/56)
- Kimi K3.1 Pro public-lane score: 98 (#1/56)

| Benchmark | Gemini 3.5 Flash | Kimi K3.1 Pro | Winner |
|-----------|-----------|-----------|--------|
| ExtractBench (LlamaIndex) | 79.84% | Coming soon | Coming soon |
| ParseBench | 74.02% | Coming soon | Coming soon |
| CharXiv | 84.2% | 93.4% | Kimi K3.1 Pro |
| MMMU-Pro | 83.6% | 84.1% | Kimi K3.1 Pro |
| Blueprint-Bench 2 | 33.6% | Coming soon | Coming soon |
| 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 w/ Python | Coming soon | 90% | Coming soon |
| CharXiv w/o tools | Coming soon | 89% | 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
- Gemini 3.5 Flash public-lane score: 64.5 (Supported · #36/187)
- Kimi K3.1 Pro public-lane score: Coming soon

| Benchmark | Gemini 3.5 Flash | Kimi K3.1 Pro | Winner |
|-----------|-----------|-----------|--------|
| GPQA-D | 92.7% | 94.2% | Kimi K3.1 Pro |
| HLE | 40.2% | 70% | Kimi K3.1 Pro |
| GPQA Diamond (Vals) | 92.7% | Coming soon | Coming soon |
| MMLU-Pro (Vals) | 89.5% | Coming soon | Coming soon |
| GPQA | Coming soon | 94.2% | Coming soon |
| HLE w/o tools | Coming soon | 51.1% | Coming soon |
| Kimi Hallu Bench | Coming soon | 5.4% | Coming soon |

### Instruction Following

- Winner: Not comparable
- Gemini 3.5 Flash public-lane score: 87.4 (#39/153)
- Kimi K3.1 Pro public-lane score: Coming soon

### Mathematics

- Winner: Not comparable
- Gemini 3.5 Flash public-lane score: 67.1 (Unranked · 2 rankable rows)
- Kimi K3.1 Pro public-lane score: Coming soon

| Benchmark | Gemini 3.5 Flash | Kimi K3.1 Pro | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath v2 (Tiers 1-3) | 62.807% | Coming soon | Coming soon |
| FrontierMath v2 (Tier 4) | 26.829% | Coming soon | Coming soon |

## FAQ

### Which is better overall, Gemini 3.5 Flash or Kimi K3.1 Pro?

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

### Where is the biggest gap between Gemini 3.5 Flash and Kimi K3.1 Pro?

The widest category gap is in multimodal & grounded, where the averages are 87.4 for Gemini 3.5 Flash and 98 for Kimi K3.1 Pro.

### How many benchmarks does Gemini 3.5 Flash cover on BenchLM?

Gemini 3.5 Flash currently has 31 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

- [Gemini 3.5 Flash vs Gemini 3.5 Flash Cyber](/compare/gemini-3-5-flash-vs-gemini-3-5-flash-cyber)
- [Kimi K3.1 Pro vs Gemini 3.5 Flash Cyber](/compare/gemini-3-5-flash-cyber-vs-kimi-3-1-pro)
- [Gemini 3.5 Flash vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-gemini-3-5-flash)
- [Kimi K3.1 Pro vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-kimi-3-1-pro)

## Explore More

- [Gemini 3.5 Flash profile](/models/gemini-3-5-flash)
- [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)