GPT-5.4 nano vs Kimi K2.5: Specs & Benchmark Comparison
| Characteristic | GPT-5.4 nano | Kimi K2.5 |
|---|---|---|
| Company | OpenAI | Moonshot AI |
| Release Date | March 1, 2026 | January 26, 2026 |
| Parameters | — | 1.0T |
| Multimodal | Yes | Yes |
| Context (input) | 400K | — |
| Context (output) | 128K | — |
| Input Price / 1M | $0.12 | — |
| Output Price / 1M | $1.50 | — |
| Average Score | 0.7 | 0.9 |
| Benchmarks | ||
| OmniDocBench 1.5 | 0.8 | 0.9 |
| GPQA | 0.8 | 0.9 |
Visual Benchmark Comparison
GPT-5.4 nano
Kimi K2.5
OmniDocBench 1.50.8 vs 0.9
0.8
0.9
GPQA0.8 vs 0.9
0.8
0.9
Verdict
GPT-5.4 nano leads in 1 out of 2 comparison categories.
Overall Performance
Both models show comparable average scores: GPT-5.4 nano — 0.7, Kimi K2.5 — 0.9.
Recency
GPT-5.4 nano is newer: released 3/1/2026 vs 1/26/2026.
More About These Models
Related Comparisons
The GPT-5.4 nano and Kimi K2.5 comparison is updated for 2026. Data includes benchmark results, API pricing, context window size and other specifications. For more detailed information, visit the GPT-5.4 nano or Kimi K2.5 page. See also the complete list of AI model comparisons.