# GPT-5.4 vs Kimi K2.6

> Side-by-side benchmark comparison for GPT-5.4 and Kimi K2.6 across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/gpt-5-4-vs-kimi-2-6
- Last updated: October 10, 2026

- Shared sourced benchmarks: 20
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

GPT-5.4 leads by point estimate. Conditional score ranges do not establish rank confidence. Choose using the category evidence and your own workload tests.

## Summary

- GPT-5.4 has the higher overall point estimate 67.03 to 58.74. Conditional score ranges do not establish rank confidence.
- The clearest category separation is in knowledge, where the averages are 67.4 for GPT-5.4 and 59.8 for Kimi K2.6.
- The biggest single benchmark swing is Vibe Code Bench in Coding, with scores of 67.42% and 37.89%.
- Kimi K2.6 is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.
- GPT-5.4 also has the larger context window at 1.05M.

## Model Snapshot

| Property | GPT-5.4 | Kimi K2.6 |
|----------|----------|----------|
| Creator | OpenAI | Moonshot AI |
| Type | Proprietary | Open Weight |
| Reasoning | Reasoning | Reasoning |
| Context | 1.05M | 256K |
| Overall Score | 67.03 | 58.74 |
| Benchmarks Covered | 41 | 37 |
| Pricing (input/output) | $2.50 / $15.00 | $0.95 / $4.00 |

## Category Breakdown

### Agentic

- Winner: GPT-5.4
- GPT-5.4 public-lane score: 50.2 (Supported · #45/123)
- Kimi K2.6 public-lane score: 43.7 (Supported · #57/123)

| Benchmark | GPT-5.4 | Kimi K2.6 | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.0 | 75.1% | 66.7% | GPT-5.4 |
| CyberGym | 79.0% | Coming soon | Coming soon |
| BrowseComp | 82.7% | 83.2% | Kimi K2.6 |
| OSWorld-Verified | 75% | 73.1% | GPT-5.4 |
| MCP Atlas | 70.6% | 55.9% | GPT-5.4 |
| Toolathlon | 54.6% | 50% | GPT-5.4 |
| τ²-bench results | 98.9% | Coming soon | Coming soon |
| Claw-Eval | 60.3% | 62.3% | Kimi K2.6 |
| DeepSearchQA | 73.6% | 92.5% | Kimi K2.6 |
| Gert Labs | 64.89% | 56.82% | GPT-5.4 |
| ResearchClawBench | 15.3% | 18.0% | Kimi K2.6 |
| JobBench | 38.9% | Coming soon | Coming soon |
| ExploitGym | 6.0% | Coming soon | Coming soon |
| ApprenticeBench | 11% | Coming soon | Coming soon |
| WideResearch | Coming soon | 80.8% | Coming soon |
| OSWorld 2.0 | Coming soon | 4.6% | Coming soon |
| Terminal-Bench 2.1 (Vals) | Coming soon | 53.6% | Coming soon |

### Coding

- Winner: GPT-5.4
- GPT-5.4 public-lane score: 48.1 (Supported · #45/146)
- Kimi K2.6 public-lane score: 43.9 (Supported · #54/146)

| Benchmark | GPT-5.4 | Kimi K2.6 | Winner |
|-----------|-----------|-----------|--------|
| LiveCodeBench Pro | 87.5% | Coming soon | Coming soon |
| SWE-bench Pro | 57.7% | 58.6% | Kimi K2.6 |
| React Native Evals | 85.3% | Coming soon | Coming soon |
| Terminal-Bench 2.0 | 75.1% | 66.7% | GPT-5.4 |
| Vibe Code Bench | 67.42% | 37.89% | GPT-5.4 |
| PostTrainBench v1.1 | 19.0% | Coming soon | Coming soon |
| SWE-bench Verified | Coming soon | 80.2% | Coming soon |
| LiveCodeBench v6 | Coming soon | 89.6% | Coming soon |
| SWE Multilingual | Coming soon | 76.7% | Coming soon |
| SciCode | Coming soon | 52.2% | Coming soon |
| cursorBench31 | Coming soon | 47.6% | Coming soon |
| LiveCodeBench (Vals) | Coming soon | 86.8% | Coming soon |
| SWE-bench (Vals) | Coming soon | 76.2% | Coming soon |

### Reasoning

- Winner: Not comparable
- GPT-5.4 public-lane score: 64.3 (#23/28)
- Kimi K2.6 public-lane score: Coming soon

| Benchmark | GPT-5.4 | Kimi K2.6 | Winner |
|-----------|-----------|-----------|--------|
| ARC-AGI-2 | 74.0% | Coming soon | Coming soon |
| ARC-AGI-3 | 0.2% | Coming soon | Coming soon |
| ARC-AGI-1 | 93.67% | Coming soon | Coming soon |

### Multimodal & Grounded

- Winner: Directional only
- GPT-5.4 public-lane score: 73.1 (#30/54)
- Kimi K2.6 public-lane score: 73.8 (#27/54)

| Benchmark | GPT-5.4 | Kimi K2.6 | Winner |
|-----------|-----------|-----------|--------|
| MMMU-Pro | 81.2% | 79.4% | GPT-5.4 |
| OfficeQA Pro | 53.2% | Coming soon | Coming soon |
| MMMU-Pro w/ Python | 82.1% | 80.1% | GPT-5.4 |
| CharXiv | 82.8% | 80.4% | GPT-5.4 |
| ERQA | 65.4% | Coming soon | Coming soon |
| SimpleVQA | 61.1% | Coming soon | Coming soon |
| ScreenSpot Pro | 85.4% | Coming soon | Coming soon |
| ZeroBench | 41.0% | Coming soon | Coming soon |
| MedXpertQA (MM) | 77.1% | Coming soon | Coming soon |
| MathVision | Coming soon | 87.4% | Coming soon |
| V* | Coming soon | 96.9% | Coming soon |

### Knowledge

- Winner: GPT-5.4
- GPT-5.4 public-lane score: 67.4 (Supported · #22/177)
- Kimi K2.6 public-lane score: 59.8 (Supported · #45/177)

| Benchmark | GPT-5.4 | Kimi K2.6 | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 92.8% | 90.5% | GPT-5.4 |
| HLE | 52.1% | 34.7% | GPT-5.4 |
| HLE w/o tools | 39.8% | Coming soon | Coming soon |
| GPQA-D | 92.8% | 90.5% | GPT-5.4 |
| HealthBench Hard | 40.1% | Coming soon | Coming soon |
| MedXpertQA (Text) | 59.6% | Coming soon | Coming soon |
| HealthBench Professional | 48.1% | Coming soon | Coming soon |
| GPQA Diamond (Vals) | Coming soon | 89.1% | Coming soon |
| MMLU-Pro (Vals) | Coming soon | 87.6% | Coming soon |

### Instruction Following

- Winner: Not comparable
- GPT-5.4 public-lane score: 90.7 (#23/127)
- Kimi K2.6 public-lane score: Coming soon

### Mathematics

- Winner: Not comparable
- GPT-5.4 public-lane score: 64.9 (Unranked · 2 rankable rows)
- Kimi K2.6 public-lane score: 72.2 (#1/7)

| Benchmark | GPT-5.4 | Kimi K2.6 | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath v2 (Tiers 1-3) | 47.600% | 38.966% | GPT-5.4 |
| FrontierMath v2 (Tier 4) | 27.100% | 14.580% | GPT-5.4 |
| AIME26 | Coming soon | 96.4% | Coming soon |
| HMMT Feb 2026 | Coming soon | 92.7% | Coming soon |
| MMAnswerBench | Coming soon | 86.0% | Coming soon |

## FAQ

### Which is better overall, GPT-5.4 or Kimi K2.6?

GPT-5.4 has the higher overall point estimate. Conditional score ranges do not establish rank confidence.

### Where is the biggest gap between GPT-5.4 and Kimi K2.6?

The widest category gap is in knowledge, where the averages are 67.4 for GPT-5.4 and 59.8 for Kimi K2.6.

### How many benchmarks does GPT-5.4 cover on BenchLM?

GPT-5.4 currently has 41 sourced benchmark scores on BenchLM.

### How many benchmarks does Kimi K2.6 cover on BenchLM?

Kimi K2.6 currently has 37 sourced benchmark scores on BenchLM.

## Related Comparisons

- [GPT-5.4 vs GPT-5.4 Pro](/compare/gpt-5-4-vs-gpt-5-4-pro)
- [Kimi K2.6 vs GPT-5.4 Pro](/compare/gpt-5-4-pro-vs-kimi-2-6)
- [GPT-5.4 vs GPT-5.4 mini](/compare/gpt-5-4-vs-gpt-5-4-mini)
- [Kimi K2.6 vs GPT-5.4 mini](/compare/gpt-5-4-mini-vs-kimi-2-6)

## Explore More

- [GPT-5.4 profile](/models/gpt-5-4)
- [Kimi K2.6 profile](/models/kimi-2-6)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)