Claude Sonnet 5 vs Sakana Namazu: Specs & Benchmark Comparison
Claude Sonnet 5 is developed by Anthropic, while Sakana Namazu comes from Sakana AI. Claude Sonnet 5 was released in June 2026, and Sakana Namazu followed 2 months later in August 2026.
We have 23 benchmark results for Claude Sonnet 5 and 3 benchmark results for Sakana Namazu, but they were measured on different benchmarks, so there is no like-for-like scoreboard.
Sakana Namazu is the cheaper API at $0.95 per million input tokens and $4 per million output tokens, roughly 2 times cheaper than Claude Sonnet 5 at $2 and $10. Claude Sonnet 5 takes the larger context window at 1M tokens, compared with 256K for Sakana Namazu. Both accept text and images as input. On tooling, only Claude Sonnet 5 supports function calling and only Claude Sonnet 5 offers structured output.
| Characteristic | Claude Sonnet 5 | Sakana Namazu |
|---|---|---|
| Company | Anthropic | Sakana AI |
| Release Date | June 30, 2026 | August 3, 2026 |
| Parameters | — | — |
| Multimodal | Yes | Yes |
| Context (input) | 1.0M | 256K |
| Context (output) | 64K | 256K |
| Input Price / 1M | $2.00 | $0.95 |
| Output Price / 1M | $10.00 | $4.00 |
| Average Score | 58.4% | 92.4% |
Verdict
Sakana Namazu leads in 2 out of 4 comparison categories.
Both models show comparable average scores: Claude Sonnet 5 — 0.6, Sakana Namazu — 0.9.
Sakana Namazu is 2.4x cheaper: input $0.95/1M vs $2.00/1M tokens.
Claude Sonnet 5 supports a larger context: 1M vs 256K tokens.
Sakana Namazu is newer: released 8/3/2026 vs 6/30/2026.
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Frequently Asked Questions
Which is better for coding — Claude Sonnet 5 or Sakana Namazu?
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The Claude Sonnet 5 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 Claude Sonnet 5 or Sakana Namazu page. See also the complete list of AI model comparisons.