GPT-4o vs Kimi K2.5
Head to head on 15 shared benchmarks, with price, context window, and release dates.
Benchmark scores
55evals · sort by any column, ⤢ to expand fullscreen
| Model | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Kimi K2.5 Moonshot AI | 68.3% | 27.9% | 78.9% | 13.2% | 43.7% | 72.5% | 77.9% | 57.4% | 77.7% | 66.5% | 39.6% | 70.8% | 74.2% | 18.9% | 81.3% | - | - | - | - | 96.1 | - | - | 39.0% | - | 1576elo | 74.9 | 35.8% | - | 95.4 | 78.5% | 10421 | - | 61.4% | 84.9% | 76.0% | - | - | 62.0% | 39.3% | - | 76.4% | 87.1 | - | 63.3% | - | 49.9% | - | 73 | 67.3% | - | 69.4 | - | 26.3% | 17.5% | - | 56.8% |
| GPT-4o OpenAI | 45.9% | 0.3% | 54.3% | 2.4% | 34.3% | 55.1% | 46.1% | 70.1% | 49.0% | 57.4% | 33.3% | 21.6% | 74.5% | 8.3% | 25.1% | 18.2% | 15.0% | 6.0% | 38 | - | 0.0% | 0.33 | - | 6.1% | - | - | - | 96.1 | - | - | - | 0.0% | - | - | - | 30.9% | 75.9% | - | - | 10.8% | - | - | 74.8% | - | 54.0% | - | 5.71 | - | - | 61.2 | - | 0.98 | - | - | 32.5% | 33.4% |
2 / 2 models
| Attribute | GPT-4o OpenAI | Kimi K2.5 Moonshot AI |
|---|---|---|
| Description | GPT-4o is an AI model from OpenAI. | Kimi K2.5 is an AI model from Kimi. |
| Family | GPT | Kimi |
| Params | - | - |
| Open weights | closed | closed |
| License | proprietary | Modified MIT |
| Released | 20 Nov 2024 | 27 Jan 2026 |
| Context | 128,000 | 262,144 |
| Input $/1M | $2.50 | $0.60 |
| Output $/1M | $10.00 | $3.00 |
| Cache read $/1M | $1.250 | $0.100 |
| Cache write $/1M | - | - |
| Speed | 0 tok/s | 0 tok/s |
| Latency | 0.00 s | 0.00 s |
| Modalities | text, image, file | text, image |
| Providers | - | - |
| Publisher | OpenAI | Moonshot AI |
| Reported scores | Taubench61.2 pass^1 GSM8K96.1 Accuracy ScholarSearch5.71 Social Sciences & Humanities (%) MortgageTax57.4% AIME202438 pass@1 | GPQA Diamond78.9% (AA) Humanity's Last Exam (HLE)13.2% (AA) IFBench43.7% (AA) SciCode39.6% (AA) τ²-bench (Tau²-bench)81.3% (AA) |
FAQ
- Is GPT-4o or Kimi K2.5 better?
- Across the 15 benchmarks both models report on Sophon, Kimi K2.5 leads on 13 of them. Which one is "better" depends on the benchmark - the table above shows every shared score.
- How do GPT-4o and Kimi K2.5 compare on GPQA Diamond?
- GPT-4o scores 54.3% and Kimi K2.5 scores 78.9% on GPQA Diamond.
- Which is cheaper, GPT-4o or Kimi K2.5?
- Kimi K2.5 is cheaper at $3.00 per million output tokens against $10.00 for GPT-4o - about 3.3x.
- When were GPT-4o and Kimi K2.5 released?
- GPT-4o was released 20 Nov 2024 by OpenAI. Kimi K2.5 was released 27 Jan 2026 by Moonshot AI.
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