# GPT-6 Astra vs Kimi K3.1 Pro

> Side-by-side benchmark comparison for GPT-6 Astra and Kimi K3.1 Pro across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/gpt-6-astra-vs-kimi-3-1-pro
- Last updated: October 23, 2026

- Shared sourced benchmarks: 11
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Pick GPT-6 Astra if you want the stronger benchmark profile. Kimi K3.1 Pro only makes more sense when its price, context window, or workload-specific category wins matter more than the overall score.

## Summary

- GPT-6 Astra leads overall 84.02 to 82.
- The clearest category separation is in multimodal & grounded, where the averages are 88.2 for GPT-6 Astra and 98 for Kimi K3.1 Pro.
- The biggest single benchmark swing is Terminal-Bench-Science 0.1 in Agentic, with scores of 64.6% and 38.1%.
- Kimi K3.1 Pro is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.

## Model Snapshot

| Property | GPT-6 Astra | Kimi K3.1 Pro |
|----------|----------|----------|
| Creator | OpenAI | Moonshot AI |
| Type | Proprietary | Pending |
| Reasoning | Reasoning | Reasoning |
| Context | 1.05M | 1.05M |
| Overall Score | 84.02 | null |
| Benchmarks Covered | 44 | 42 |
| Pricing (input/output) | $10.00 / $50.00 | $2.00 / $10.00 |

## Category Breakdown

### Agentic

- Winner: Not comparable
- GPT-6 Astra public-lane score: 75.7 (Supported · #7/132)
- Kimi K3.1 Pro public-lane score: Coming soon

| Benchmark | GPT-6 Astra | Kimi K3.1 Pro | Winner |
|-----------|-----------|-----------|--------|
| BrowseComp | 91.5% | 92.1% | Kimi K3.1 Pro |
| OSWorld 2.0 | 72.6% | 79.6% | Kimi K3.1 Pro |
| Terminal-Bench 4.0 | 57.90% | 65.70% | Kimi K3.1 Pro |
| Terminal-Bench-Science 0.1 | 64.6% | 38.1% | GPT-6 Astra |
| ExploitGym | 42.4% | 20.7% | GPT-6 Astra |
| Agents' Last Exam | 59.3% | 43.2% | GPT-6 Astra |
| AutomationBench | 41.4% | Coming soon | Coming soon |
| HLE w/ tools | 57.2% | 70.0% | Kimi K3.1 Pro |
| Terminal-Bench 2.1 (Vals) | 87.3% | Coming soon | Coming soon |
| ApprenticeBench | 68% | Coming soon | Coming soon |
| CWE-bench v1 | 68.0% | Coming soon | Coming soon |
| Hermes Index | 56.3% | Coming soon | Coming soon |
| Hermes Bench | 73.7% | Coming soon | Coming soon |
| MazeBench | 23% | Coming soon | Coming soon |
| BioMysteryBench | Coming soon | 80.6% | 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 |
| 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 |

### Coding

- Winner: Not comparable
- GPT-6 Astra public-lane score: 75.5 (Supported · #4/153)
- Kimi K3.1 Pro public-lane score: Coming soon

| Benchmark | GPT-6 Astra | Kimi K3.1 Pro | Winner |
|-----------|-----------|-----------|--------|
| DeepSWE | 74.1% | 75.5% | Kimi K3.1 Pro |
| FrontierCode 1.1 Main | 53.3% | Coming soon | Coming soon |
| FrontierCode 1.1 Extended | 64.5% | Coming soon | Coming soon |
| FrontierSWE v2 | 65.5% | Coming soon | Coming soon |
| PostTrainBench v1.1 | 44.3% | Coming soon | Coming soon |
| Bug Hunt Bench | 45.0 fixes | Coming soon | 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
- GPT-6 Astra public-lane score: 93.3 (#1/27)
- Kimi K3.1 Pro public-lane score: Coming soon

| Benchmark | GPT-6 Astra | Kimi K3.1 Pro | Winner |
|-----------|-----------|-----------|--------|
| STEMBench | 2.81 | Coming soon | Coming soon |
| ARC-AGI-1 | 97.50% | Coming soon | Coming soon |
| ARC-AGI-2 | 95% | Coming soon | Coming soon |
| ARC-AGI-3 | 62.7% | Coming soon | Coming soon |
| GeneBench-Pro | 37.8% | Coming soon | Coming soon |
| MRCR v2 256K-512K | 100.0% | Coming soon | Coming soon |
| MRCR v2 512K-1M | 96.3% | Coming soon | Coming soon |
| GraphWalks BFS 256K–1M | 71.8% | Coming soon | Coming soon |
| ARC-AGI-3 Provider Adapter | 98.55% | Coming soon | Coming soon |

### Multimodal & Grounded

- Winner: Not comparable
- GPT-6 Astra public-lane score: 88.2 (Unranked · 3 rankable rows)
- Kimi K3.1 Pro public-lane score: 98 (#1/56)

| Benchmark | GPT-6 Astra | Kimi K3.1 Pro | Winner |
|-----------|-----------|-----------|--------|
| ExtractBench Pro | 58% | Coming soon | Coming soon |
| ExtractBench (LlamaIndex) | 91.91% | Coming soon | Coming soon |
| ParseBench | 70.67% | Coming soon | Coming soon |
| ScreenSpot Pro | 92.7% | Coming soon | Coming soon |
| BenchCAD Vision2Code (tools) | 0.959 | 0.927 | GPT-6 Astra |
| 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 |
| MMMU-Pro | Coming soon | 84.1% | Coming soon |
| MMMU-Pro w/ Python | Coming soon | 90% | Coming soon |
| CharXiv | Coming soon | 93.4% | 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
- GPT-6 Astra public-lane score: 85.7 (Supported · #3/187)
- Kimi K3.1 Pro public-lane score: Coming soon

| Benchmark | GPT-6 Astra | Kimi K3.1 Pro | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 96% | 94.2% | GPT-6 Astra |
| GPQA-D | 96.0% | 94.2% | GPT-6 Astra |
| HealthBench (raw) | 56.9% | Coming soon | Coming soon |
| HealthBench (length-adjusted) | 58.3% | Coming soon | Coming soon |
| HealthBench Professional | 64.7% | Coming soon | Coming soon |
| HealthBench Professional (raw) | 68.2% | Coming soon | Coming soon |
| HealthBench Hard | 36.6% | Coming soon | Coming soon |
| HLE | Coming soon | 70% | 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
- GPT-6 Astra public-lane score: Coming soon
- Kimi K3.1 Pro public-lane score: Coming soon

| Benchmark | GPT-6 Astra | Kimi K3.1 Pro | Winner |
|-----------|-----------|-----------|--------|
| Gray Swan IPI (15 attempts) | 8.5% | Coming soon | Coming soon |

### Mathematics

- Winner: Not comparable
- GPT-6 Astra public-lane score: 97.3 (Unranked · 2 rankable rows)
- Kimi K3.1 Pro public-lane score: Coming soon

| Benchmark | GPT-6 Astra | Kimi K3.1 Pro | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath v2 (Tier 4) | 97.600% | Coming soon | Coming soon |
| FrontierMath v2 (Tiers 1-3) | 93.684% | Coming soon | Coming soon |

## FAQ

### Which is better overall, GPT-6 Astra or Kimi K3.1 Pro?

GPT-6 Astra is ahead overall on BenchLM right now.

### Where is the biggest gap between GPT-6 Astra and Kimi K3.1 Pro?

The widest category gap is in multimodal & grounded, where the averages are 88.2 for GPT-6 Astra and 98 for Kimi K3.1 Pro.

### How many benchmarks does GPT-6 Astra cover on BenchLM?

GPT-6 Astra currently has 44 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

- [GPT-6 Astra vs GPT-6.1 Sol](/compare/gpt-6-1-sol-vs-gpt-6-astra)
- [Kimi K3.1 Pro vs GPT-6.1 Sol](/compare/gpt-6-1-sol-vs-kimi-3-1-pro)
- [GPT-6 Astra vs GPT-6 Sol](/compare/gpt-6-astra-vs-gpt-6-sol)
- [Kimi K3.1 Pro vs GPT-6 Sol](/compare/gpt-6-sol-vs-kimi-3-1-pro)

## Explore More

- [GPT-6 Astra profile](/models/gpt-6-astra)
- [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)