# Kimi K2 vs Kimi K2.5 (Reasoning)

> Side-by-side benchmark comparison for Kimi K2 and Kimi K2.5 (Reasoning) across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/kimi-k2-vs-kimi-k2-5-reasoning
- Last updated: October 17, 2026

- Shared sourced benchmarks: 5
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Kimi K2.5 (Reasoning) 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 (Reasoning) has the higher overall point estimate 56.09 to 33.48. Conditional score ranges do not establish rank confidence.
- The clearest category separation is in knowledge, where the averages are 36.1 for Kimi K2 and 48.8 for Kimi K2.5 (Reasoning).
- The biggest single benchmark swing is AIME 2025 in Mathematics, with scores of 49.5% and 96.1%.
- Kimi K2 is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.

## Model Snapshot

| Property | Kimi K2 | Kimi K2.5 (Reasoning) |
|----------|----------|----------|
| Creator | Moonshot AI | Moonshot AI |
| Type | Proprietary | Proprietary |
| Reasoning | Non-Reasoning | Reasoning |
| Context | 128K | 128K |
| Overall Score | 33.48 | 56.09 |
| Benchmarks Covered | 13 | 15 |
| Pricing (input/output) | $0.60 / $2.50 | $0.60 / $3.00 |

## Category Breakdown

### Agentic

- Winner: Not comparable
- Kimi K2 public-lane score: Coming soon
- Kimi K2.5 (Reasoning) public-lane score: 38.3 (Estimated · #71/128)

| Benchmark | Kimi K2 | Kimi K2.5 (Reasoning) | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.0 | Coming soon | 50.8% | Coming soon |
| BrowseComp | Coming soon | 60.6% | Coming soon |
| OSWorld-Verified | Coming soon | 63.3% | Coming soon |
| Gert Labs | Coming soon | 32.58% | Coming soon |

### Coding

- Winner: Not comparable
- Kimi K2 public-lane score: Coming soon
- Kimi K2.5 (Reasoning) public-lane score: Coming soon

| Benchmark | Kimi K2 | Kimi K2.5 (Reasoning) | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Verified | 65.8% | 76.8% | Kimi K2.5 (Reasoning) |
| LiveCodeBench v6 | 53.7% | 85.0% | Kimi K2.5 (Reasoning) |
| SWE Multilingual | 47.3% | Coming soon | Coming soon |
| Terminal-Bench 2.0 | Coming soon | 50.8% | Coming soon |
| Vibe Code Bench | Coming soon | 17.54% | Coming soon |

### Reasoning

- Winner: Not comparable
- Kimi K2 public-lane score: 62.3 (Unranked · 2 rankable rows)
- Kimi K2.5 (Reasoning) public-lane score: 67.1 (Unranked · 1 rankable row)

| Benchmark | Kimi K2 | Kimi K2.5 (Reasoning) | Winner |
|-----------|-----------|-----------|--------|
| LongBench v2 | Coming soon | 61% | Coming soon |

### Multimodal & Grounded

- Winner: Not comparable
- Kimi K2 public-lane score: Coming soon
- Kimi K2.5 (Reasoning) public-lane score: 69 (#33/54)

| Benchmark | Kimi K2 | Kimi K2.5 (Reasoning) | Winner |
|-----------|-----------|-----------|--------|
| MMMU-Pro | Coming soon | 78.5% | Coming soon |
| CharXiv | Coming soon | 77.5% | Coming soon |

### Knowledge

- Winner: Directional only
- Kimi K2 public-lane score: 36.1 (Estimated · #129/184)
- Kimi K2.5 (Reasoning) public-lane score: 48.8 (Estimated · #85/184)

| Benchmark | Kimi K2 | Kimi K2.5 (Reasoning) | Winner |
|-----------|-----------|-----------|--------|
| MMLU | 89.5% | Coming soon | Coming soon |
| GPQA | 75.1% | 87.6% | Kimi K2.5 (Reasoning) |
| SuperGPQA | 57.2% | Coming soon | Coming soon |
| MMLU-Pro | 81.1% | 87.1% | Kimi K2.5 (Reasoning) |
| SimpleQA | 31% | Coming soon | Coming soon |
| HLE | 4.7% | Coming soon | Coming soon |

### Instruction Following

- Winner: Not comparable
- Kimi K2 public-lane score: 48.4 (#96/148)
- Kimi K2.5 (Reasoning) public-lane score: Coming soon

| Benchmark | Kimi K2 | Kimi K2.5 (Reasoning) | Winner |
|-----------|-----------|-----------|--------|
| IFEval | 89.8% | Coming soon | Coming soon |

### Mathematics

- Winner: Not comparable
- Kimi K2 public-lane score: 0 (#12/12)
- Kimi K2.5 (Reasoning) public-lane score: Coming soon

| Benchmark | Kimi K2 | Kimi K2.5 (Reasoning) | Winner |
|-----------|-----------|-----------|--------|
| AIME 2024 | 69.6% | Coming soon | Coming soon |
| AIME 2025 | 49.5% | 96.1% | Kimi K2.5 (Reasoning) |
| MATH-500 | 97.4% | Coming soon | Coming soon |
| HMMT Feb 2025 | Coming soon | 95.4% | Coming soon |

## FAQ

### Which is better overall, Kimi K2 or Kimi K2.5 (Reasoning)?

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

### Where is the biggest gap between Kimi K2 and Kimi K2.5 (Reasoning)?

The widest category gap is in knowledge, where the averages are 36.1 for Kimi K2 and 48.8 for Kimi K2.5 (Reasoning).

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

Kimi K2 currently has 13 sourced benchmark scores on BenchLM.

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

Kimi K2.5 (Reasoning) currently has 15 sourced benchmark scores on BenchLM.

## Related Comparisons

- [Kimi K2 vs Kimi K2.5](/compare/kimi-k2-vs-kimi-k2-5)
- [Kimi K2.5 (Reasoning) vs Kimi K2.5](/compare/kimi-k2-5-vs-kimi-k2-5-reasoning)
- [Kimi K2 vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-kimi-k2)
- [Kimi K2.5 (Reasoning) vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-kimi-k2-5-reasoning)

## Explore More

- [Kimi K2 profile](/models/kimi-k2)
- [Kimi K2.5 (Reasoning) profile](/models/kimi-k2-5-reasoning)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)