GPT-5.4 nano vs Kimi K2-Thinking-0905: Specs & Benchmark Comparison
| Characteristic | GPT-5.4 nano | Kimi K2-Thinking-0905 |
|---|---|---|
| Company | OpenAI | Moonshot AI |
| Release Date | March 1, 2026 | September 4, 2025 |
| Parameters | — | 1.0T |
| Multimodal | Yes | No |
| Context (input) | 400K | 262K |
| Context (output) | 128K | 66K |
| Input Price / 1M | $0.12 | $0.60 |
| Output Price / 1M | $1.50 | $2.40 |
| Average Score | 0.7 | 0.9 |
| Benchmarks | ||
| GPQA | 0.8 | 0.8 |
Visual Benchmark Comparison
GPT-5.4 nano
Kimi K2-Thinking-0905
GPQA0.8 vs 0.8
0.8
0.8
Verdict
GPT-5.4 nano leads in 3 out of 4 comparison categories.
Overall Performance
Both models show comparable average scores: GPT-5.4 nano — 0.7, Kimi K2-Thinking-0905 — 0.9.
API Cost
GPT-5.4 nano is 1.9x cheaper: input $0.12/1M vs $0.60/1M tokens.
Context Window
GPT-5.4 nano supports a larger context: 400K vs 262K tokens.
Recency
GPT-5.4 nano is newer: released 3/1/2026 vs 9/4/2025.
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The GPT-5.4 nano and Kimi K2-Thinking-0905 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-Thinking-0905 page. See also the complete list of AI model comparisons.