Kimi K2-Thinking-0905 vs Sakana Namazu: Specs & Benchmark Comparison
Kimi K2-Thinking-0905 is developed by Moonshot AI, while Sakana Namazu comes from Sakana AI. Kimi K2-Thinking-0905 was released in September 2025, and Sakana Namazu followed 11 months later in August 2026. Kimi K2-Thinking-0905 has a published size of about 1.0 trillion parameters; Sakana AI has not disclosed the parameter count of Sakana Namazu.
The two models share 2 published benchmarks. Sakana Namazu leads on 2 of them. The widest gaps are on LiveCodeBench v6, where Sakana Namazu scores 90.3% against 83.1%; MMLU-Pro, where Sakana Namazu scores 90.3% against 85.0%. Averaged across everything we track, Kimi K2-Thinking-0905 sits at 68.3% and Sakana Namazu at 92.4%.
Kimi K2-Thinking-0905 is the cheaper API at $0.60 per million input tokens and $2.40 per million output tokens, about 58% below Sakana Namazu at $0.95 and $4. Both accept a context window of about 256K tokens. Kimi K2-Thinking-0905 accepts text as input, while Sakana Namazu accepts text and images. On tooling, only Kimi K2-Thinking-0905 supports function calling and only Kimi K2-Thinking-0905 offers structured output.
| Characteristic | Kimi K2-Thinking-0905 | Sakana Namazu |
|---|---|---|
| Company | Moonshot AI | Sakana AI |
| Release Date | September 4, 2025 | August 3, 2026 |
| Parameters | 1.0T | — |
| Multimodal | No | Yes |
| Context (input) | 262K | 256K |
| Context (output) | 66K | 256K |
| Input Price / 1M | $0.60 | $0.95 |
| Output Price / 1M | $2.40 | $4.00 |
| Average Score | 68.3% | 92.4% |
| Benchmarks | ||
| LiveCodeBench v6 | 83.1% | 90.3% |
| MMLU-Pro | 85.0% | 90.3% |
Visual Benchmark Comparison
Verdict
Kimi K2-Thinking-0905 leads in 2 out of 4 comparison categories.
Both models show comparable average scores: Kimi K2-Thinking-0905 — 0.7, Sakana Namazu — 0.9.
Kimi K2-Thinking-0905 is 1.6x cheaper: input $0.60/1M vs $0.95/1M tokens.
Kimi K2-Thinking-0905 supports a larger context: 262K vs 256K tokens.
Sakana Namazu is newer: released 8/3/2026 vs 9/4/2025.
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Frequently Asked Questions
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The Kimi K2-Thinking-0905 and Sakana Namazu comparison is updated for 2026. Data includes benchmark results, API pricing, context window size and other specifications. For more detailed information, visit the Kimi K2-Thinking-0905 or Sakana Namazu page. See also the complete list of AI model comparisons.