# GPT-5.6 Terra vs Kimi K3.1 Pro

> Side-by-side benchmark comparison for GPT-5.6 Terra and Kimi K3.1 Pro across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/gpt-5-6-terra-vs-kimi-3-1-pro
- Last updated: October 23, 2026

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

## Quick Verdict

Pick Kimi K3.1 Pro if you want the stronger benchmark profile. GPT-5.6 Terra 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 70.04.
- The clearest category separation is in multimodal & grounded, where the averages are 84.9 for GPT-5.6 Terra and 98 for Kimi K3.1 Pro.
- The biggest single benchmark swing is OSWorld 2.0 in Agentic, with scores of 50.2% and 79.6%.
- 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-5.6 Terra | Kimi K3.1 Pro |
|----------|----------|----------|
| Creator | OpenAI | Moonshot AI |
| Type | Proprietary | Pending |
| Reasoning | Reasoning | Reasoning |
| Context | 1.05M | 1.05M |
| Overall Score | 70.04 | null |
| Benchmarks Covered | 37 | 42 |
| Pricing (input/output) | $2.00 / $12.00 | $2.00 / $10.00 |

## Category Breakdown

### Agentic

- Winner: Not comparable
- GPT-5.6 Terra public-lane score: 60.4 (Supported · #27/132)
- Kimi K3.1 Pro public-lane score: Coming soon

| Benchmark | GPT-5.6 Terra | Kimi K3.1 Pro | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 3.0 | 20.8% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | 87.4% | Coming soon | Coming soon |
| BrowseComp | 87.5% | 92.1% | Kimi K3.1 Pro |
| OSWorld 2.0 | 50.2% | 79.6% | Kimi K3.1 Pro |
| CyberGym | 81.8% | Coming soon | Coming soon |
| ExploitGym | 23.2% | 20.7% | GPT-5.6 Terra |
| Toolathlon | 53.1% | Coming soon | Coming soon |
| Terminal-Bench 2.1 (Vals) | 77.5% | Coming soon | Coming soon |
| ApprenticeBench | 16% | Coming soon | Coming soon |
| MazeBench | 6% | 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 |
| 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 |
| 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-5.6 Terra public-lane score: 61.9 (Supported · #15/153)
- Kimi K3.1 Pro public-lane score: Coming soon

| Benchmark | GPT-5.6 Terra | Kimi K3.1 Pro | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Pro | 63.4% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | 87.4% | Coming soon | Coming soon |
| DeepSWE | 69.6% | 75.5% | Kimi K3.1 Pro |
| FrontierCode 1.1 Extended | 55.8% | Coming soon | Coming soon |
| CursorBench 3.2 | 64.9% | Coming soon | Coming soon |
| VulcanBench v3 | 87.0% | Coming soon | Coming soon |
| LiveCodeBench (Vals) | 85.9% | Coming soon | Coming soon |
| SWE-bench (Vals) | 95.4% | Coming soon | Coming soon |
| CursorBench 4.0 | 41.3% | 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-5.6 Terra public-lane score: 69.1 (#19/27)
- Kimi K3.1 Pro public-lane score: Coming soon

| Benchmark | GPT-5.6 Terra | Kimi K3.1 Pro | Winner |
|-----------|-----------|-----------|--------|
| ARC-AGI-2 | 83.9% | Coming soon | Coming soon |
| ARC-AGI-3 | 0.8% | Coming soon | Coming soon |
| ARC-AGI-1 | 96.50% | Coming soon | Coming soon |

### Multimodal & Grounded

- Winner: Directional only
- GPT-5.6 Terra public-lane score: 84.9 (#12/56)
- Kimi K3.1 Pro public-lane score: 98 (#1/56)

| Benchmark | GPT-5.6 Terra | Kimi K3.1 Pro | Winner |
|-----------|-----------|-----------|--------|
| ExtractBench (LlamaIndex) | 92.26% | Coming soon | Coming soon |
| ParseBench | 68.39% | Coming soon | Coming soon |
| MMMU-Pro | 80.7% | 84.1% | Kimi K3.1 Pro |
| MMMU-Pro w/ Python | 82% | 90% | 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 |
| 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-5.6 Terra public-lane score: 69.6 (Supported · #18/187)
- Kimi K3.1 Pro public-lane score: Coming soon

| Benchmark | GPT-5.6 Terra | Kimi K3.1 Pro | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 92.9% | 94.2% | Kimi K3.1 Pro |
| GPQA-D | 92.9% | 94.2% | Kimi K3.1 Pro |
| HLE-Verified | 51.1% | Coming soon | Coming soon |
| LABBench2 | 81.2% | Coming soon | Coming soon |
| HealthBench Professional | 57.7% | Coming soon | Coming soon |
| HealthBench Hard | 32.7% | Coming soon | Coming soon |
| GPQA Diamond (Vals) | 90.9% | Coming soon | Coming soon |
| MMLU-Pro (Vals) | 86.7% | 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-5.6 Terra public-lane score: 87.1 (#41/153)
- Kimi K3.1 Pro public-lane score: Coming soon

### Mathematics

- Winner: Not comparable
- GPT-5.6 Terra public-lane score: 90.1 (Unranked · 3 rankable rows)
- Kimi K3.1 Pro public-lane score: Coming soon

| Benchmark | GPT-5.6 Terra | Kimi K3.1 Pro | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath (legacy) | 84.9% | Coming soon | Coming soon |
| FrontierMath v2 (Tiers 1-3) | 84.900% | Coming soon | Coming soon |
| FrontierMath v2 (Tier 4) | 68.300% | Coming soon | Coming soon |

## FAQ

### Which is better overall, GPT-5.6 Terra or Kimi K3.1 Pro?

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

### Where is the biggest gap between GPT-5.6 Terra and Kimi K3.1 Pro?

The widest category gap is in multimodal & grounded, where the averages are 84.9 for GPT-5.6 Terra and 98 for Kimi K3.1 Pro.

### How many benchmarks does GPT-5.6 Terra cover on BenchLM?

GPT-5.6 Terra currently has 37 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-5.6 Terra vs GPT-5.6 Sol](/compare/gpt-5-6-sol-vs-gpt-5-6-terra)
- [Kimi K3.1 Pro vs GPT-5.6 Sol](/compare/gpt-5-6-sol-vs-kimi-3-1-pro)
- [GPT-5.6 Terra vs GPT-5.6 Luna](/compare/gpt-5-6-luna-vs-gpt-5-6-terra)
- [Kimi K3.1 Pro vs GPT-5.6 Luna](/compare/gpt-5-6-luna-vs-kimi-3-1-pro)

## Explore More

- [GPT-5.6 Terra profile](/models/gpt-5-6-terra)
- [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)