Sakana Namazu
by Sakana AI
Sakana Namazu is a model from Sakana AI, released on August 3, 2026. It has a 256K-token context window and can generate up to 256K output tokens. API pricing is $0.95 per 1M input tokens and $4 per 1M output tokens. It ranks #43 of 220 models by Intelligence Score with a score of 42.
Sakana Namazu is Sakana AI's proprietary closed API model specialized for Japanese language and Japanese business contexts. It is a post-trained derivative of Moonshot's open Kimi K2.6 with in-house data for Japanese/business adaptation and reduced refusals/bias. Modalities: text, image, and file inputs → text output. Built-in tools include web_search and code_interpreter (code execution). Context window 256K. OpenAI-compatible API (model id sakana-namazu; pricing SKU sakana-namazu-v1.0). List pricing: $0.95 input / $0.15 cached input / $4.00 output per 1M tokens; thinking tokens billed as output. Tool fees (description only besides web_search field): web search $7.00 per 1,000 calls; code execution $0.12 per hour (session retained). Not yet available in the EU/EEA, UK, or Switzerland pending GDPR and region-specific compliance. Chart scores with catalog ids: AIME 2026 0.9667, MMLU-Pro 0.9033, LiveCodeBench v6 0.9033. No catalog id for JFBench 0.374, FairPoliticsQA 0.563, or in-house Translation 0.522 — recorded here only. Source: https://sakana.ai/namazu/
Key specs
| Provider | Sakana AI |
|---|---|
| Release date | 2026-08-03 |
| License | proprietary |
| Context window | 256K tokens |
| Max output | 256K tokens |
| Input price | $0.95 / 1M tokens |
| Output price | $4 / 1M tokens |
| Intelligence Score | 42 |
Quick answers
What is the context window of Sakana Namazu?
Sakana Namazu has a context window of 256K tokens, with a maximum output of 256K tokens per response.
How much does Sakana Namazu cost?
Sakana Namazu costs $0.95 per 1M input tokens and $4 per 1M output tokens through the API.
Is Sakana Namazu open source?
No. Sakana Namazu is a proprietary model from Sakana AI (proprietary license).
When was Sakana Namazu released?
Sakana AI released Sakana Namazu on August 3, 2026.
How does Sakana Namazu compare to Claude Opus 5.5 (Reasoning)?
Sakana Namazu scores 42 on the Intelligence Score versus 60.5 for Claude Opus 5.5 (Reasoning), the current #1. Input pricing is $0.95 vs $4 per 1M tokens.