Compare / head-to-head
DeepSeek V3.1vs
Kimi K2.5
Kimi K2.5 leads 4 of 4 shared benchmarks. Kimi K2.5 has the larger context window (256K tokens).
Benchmarks from cited public sources; pricing from official pages; status from official provider feeds.
Shared benchmarks
0 – 4
Kimi K2.5 leads
Cheaper per token
—
list price, input + output
Larger context
Kimi K2.5
256K tokens
Providers
2 providers
DeepSeek · Moonshot AI
DeepSeek V3.1
DeepSeek · released 2025-08-21
text
- Context
- 128K
- Max out
- —
- Input /1M
- —
- Output /1M
- —
- Cached /1M
- —
- Scores
- 18 · 9 core
Kimi K2.5
Moonshot AI · released 2026-01-27
textvisionvideo
- Context
- 256K
- Max out
- —
- Input /1M
- —
- Output /1M
- —
- Cached /1M
- —
- Scores
- 26 · 14 core
Quality
Benchmark matrix
4 shared · 14 only DeepSeek V3.1 · 22 only Kimi K2.5| Benchmark | DeepSeek V3.1 | Kimi K2.5 | Δ | Edge |
|---|---|---|---|---|
| Reported by both · 4 | ||||
| LMArena Elo | 1417.1 ↗ | 1450.1 ↗ | -33 | Kimi K2.5 |
| BrowseComp | 30% ↗ | 60.6% ↗ | -30.6 pt | Kimi K2.5 |
| SimpleBench (SimpleBench) | 40% ↗ | 46.8% ↗ | -6.8 pt | Kimi K2.5 |
| WeirdML (Håvard Tveit Ihle) | 38.4% ↗ | 45.6% ↗ | -7.2 pt | Kimi K2.5 |
| Only DeepSeek V3.1 reports · 14 | ||||
| Aider-Polyglot (thinking) | 76.3% ↗ | not reported | — | — |
| AIME 2024 (thinking) | 93.1% ↗ | not reported | — | — |
| AIME 2025 (thinking) | 88.4% ↗ | not reported | — | — |
| GPQA-Diamond (thinking) | 80.1% ↗ | not reported | — | — |
| HMMT 2025 (thinking) | 84.2% ↗ | not reported | — | — |
| Humanity's Last Exam (Python + Search) | 29.8% ↗ | not reported | — | — |
| Humanity's Last Exam (thinking, text-only) | 15.9% ↗ | not reported | — | — |
| LiveCodeBench (2408-2505) (thinking) | 74.8% ↗ | not reported | — | — |
| MMLU-Pro (thinking) | 84.8% ↗ | not reported | — | — |
| MMLU-Redux (thinking) | 93.7% ↗ | not reported | — | — |
| SimpleQA (search agent) | 93.4% ↗ | not reported | — | — |
| SWE Verified (Agent mode) | 66% ↗ | not reported | — | — |
| SWE-bench Multilingual (Agent mode) | 54.5% ↗ | not reported | — | — |
| Terminal-bench (Terminus 1 framework) | 31.3% ↗ | not reported | — | — |
| Only Kimi K2.5 reports · 22 | ||||
| SWE-bench Verified | not reported | 76.8% ↗ | — | — |
| MMLU-Pro | not reported | 87.1% ↗ | — | — |
| AIME 2025 | not reported | 96.1% ↗ | — | — |
| GPQA-Diamond | not reported | 87.6% ↗ | — | — |
| HLE-Full | not reported | 30.1% ↗ | — | — |
| HLE-Full (w/ tools) | not reported | 50.2% ↗ | — | — |
| HMMT 2025 (Feb) | not reported | 95.4% ↗ | — | — |
| IMO-AnswerBench | not reported | 81.8% ↗ | — | — |
| LiveCodeBench (v6) | not reported | 85% ↗ | — | — |
| LMArena Vision (LMArena) | not reported | 1252.2 ↗ | — | — |
| LMArena WebDev (LMArena) | not reported | 1435.8 ↗ | — | — |
| MMMU-Pro | not reported | 78.5% ↗ | — | — |
| OSWorld-Verified (XLANG) | not reported | 63.3% ↗ | — | — |
| SAGE (Vals AI) | not reported | 49.9% ↗ | — | — |
| SimpleQA Verified | not reported | 34.3% ↗epoch run | — | — |
| SWE-Bench Multilingual | not reported | 73% ↗ | — | — |
| SWE-Bench Pro | not reported | 50.7% ↗ | — | — |
| SWE-bench Verified (Epoch AI run) | not reported | 73.8% ↗epoch run | — | — |
| Terminal Bench 2.0 | not reported | 50.8% ↗ | — | — |
| Toolathlon-Verified (HKUST) | not reported | 33% ↗ | — | — |
| Vending-Bench 2 (Andon Labs) | not reported | 1198.46 ↗ | — | — |
| VideoMMMU | not reported | 86.6% ↗ | — | — |
Scores tagged "epoch" or "matharena" are independent runs, used only where the lab has not published its own; ⚠ marks rows MathArena flags as released after the competition. Higher is better on every row. Δ is DeepSeek V3.1 minus Kimi K2.5 in the benchmark's own unit. "Not reported" means the lab has not published that figure; it is not a zero. ↗ opens the source.
Specs & pricing
Side by side
Official pricing pages and model cards| Spec | DeepSeek V3.1 | Kimi K2.5 | Edge |
|---|---|---|---|
| Context window | 128K tokens | 256K tokens | Kimi K2.5 |
| Max output | — | — | — |
| Input price / 1M | — | — | — |
| Output price / 1M | — | — | — |
| Cached input / 1M | — | — | — |
| Input + output / 1M Lower is cheaper. List prices; batch, tool and regional fees excluded. | — | — | — |
| Modalities | text | text · vision · video | Kimi K2.5 |
| Released | 2025-08-21 | 2026-01-27 | — |
| Cited benchmark scores | 18 | 26 | — |
Reliability
Provider status
Live from /statusMore matchups
DeepSeek V3.1 vs …
Models sharing the most benchmarksMore matchups
Kimi K2.5 vs …
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Which one wins on your data?
Public benchmarks are a starting point. Run DeepSeek V3.1 and Kimi K2.5 on your own prompts with Respan evals, or route to either through one gateway key with automatic failover.