Grok 4.5 vs Sakana Namazu: Specs & Benchmark Comparison
Grok 4.5 is developed by xAI, while Sakana Namazu comes from Sakana AI. Grok 4.5 was released in July 2026, and Sakana Namazu followed a month later in August 2026.
We have 4 benchmark results for Grok 4.5 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 Grok 4.5 at $2 and $6. Grok 4.5 takes the larger context window at 500K tokens, compared with 256K for Sakana Namazu. Both accept text and images as input. On tooling, only Grok 4.5 supports function calling and only Grok 4.5 offers structured output.
| Characteristic | Grok 4.5 | Sakana Namazu |
|---|---|---|
| Company | xAI | Sakana AI |
| Release Date | July 16, 2026 | August 3, 2026 |
| Parameters | — | — |
| Multimodal | Yes | Yes |
| Context (input) | 500K | 256K |
| Context (output) | — | 256K |
| Input Price / 1M | $2.00 | $0.95 |
| Output Price / 1M | $6.00 | $4.00 |
| Average Score | 76.0% | 92.4% |
Verdict
Sakana Namazu leads in 2 out of 4 comparison categories.
Both models show comparable average scores: Grok 4.5 — 0.8, Sakana Namazu — 0.9.
Sakana Namazu is 1.6x cheaper: input $0.95/1M vs $2.00/1M tokens.
Grok 4.5 supports a larger context: 500K vs 256K tokens.
Sakana Namazu is newer: released 8/3/2026 vs 7/16/2026.
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Frequently Asked Questions
Which is better for coding — Grok 4.5 or Sakana Namazu?
Which model is cheaper — Grok 4.5 or Sakana Namazu?
Which has a larger context window — Grok 4.5 or Sakana Namazu?
The Grok 4.5 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 Grok 4.5 or Sakana Namazu page. See also the complete list of AI model comparisons.