Sakana Namazu API

sakana/sakana-namazu
Sakana AI's Japanese-specialized reasoning model, built on Kimi K2.6.
Context
256K tokens
Input
$1.30663 / 1M tokens
Output
$5.5016 / 1M tokens
Released
Aug 11, 2026

Overview

What is Sakana Namazu API?

Sakana Namazu is a Japanese-specialized reasoning model from Sakana AI, based on Kimi K2.6 with additional training for Japanese language and business contexts. It is suited for Japanese instruction following and business workflows, supports a 262K context window, and accepts text, image, and file inputs.

Technical Specifications
- Context window: 262,144 tokens
- Max output: 65,536 tokens
- Supported inputs: Image, Text
- Output: Text

Sakana Namazu API Pricing
- Input: $1.235 / 1M tokens
- Output: $5.2 / 1M tokens
- Cached input: $0.195 / 1M tokens

Use cases

Market research report generation is a documented use case for Sakana Namazu. Sakana AI says the model can autonomously handle the full workflow from planning the research, through repeated web searching and information cross-checking, to writing the report.

Customer support automation is another documented use case. Sakana AI describes using Sakana Namazu for Japanese-language inquiry handling, and also for analyzing order data in the same workflow.

Business writing and document work are documented use cases as well. Sakana AI says the model is refined for Japanese language and business workflows, and is suited to producing natural Japanese documents and materials for recurring daily office tasks.

Research and coding agents are also documented use cases. Sakana AI’s model listing says Sakana Namazu handles complex tasks using web search and code execution, and third-party documentation describes it as suited to research or coding agents that need to work naturally in Japanese.

How to use Sakana Namazu API

Install any OpenAI-compatible SDK, point it at api.aimlapi.com/v1, and set the model to sakana/sakana-namazu.
import requests

r = requests.post(
    "https://api.aimlapi.com/v1/chat/completions",
    headers={"Authorization": "Bearer " + AIMLAPI_KEY},
    json={
      "model": "sakana/sakana-namazu",
      "messages": [
        {
          "role": "user",
          "content": "Hello!"
        }
      ]
    },
)
print(r.json())
const r = await fetch("https://api.aimlapi.com/v1/chat/completions", {
  method: "POST",
  headers: {
    Authorization: `Bearer ${process.env.AIMLAPI_KEY}`,
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
    "model": "sakana/sakana-namazu",
    "messages": [
      {
        "role": "user",
        "content": "Hello!"
      }
    ]
  }),
});
console.log(await r.json());
curl -X POST https://api.aimlapi.com/v1/chat/completions \
  -H "Authorization: Bearer $AIMLAPI_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"sakana/sakana-namazu","messages":[{"role":"user","content":"Hello!"}]}'

OpenAI-compatible — swap the base URL and it works with your existing SDK.

Sakana Namazu API Pricing

TypePrice
Input
$1.30663 / 1M tokens
Output
$5.5016 / 1M tokens
Cached input
$0.20631 / 1M tokens

Cached input priced at $0.195/1M tokens.

Sakana Namazu Benchmarks

BenchmarkScoreWhat it measuresSourceRetrieved
MMLU-Pro
90.33%
Multi-discipline knowledge + reasoning (harder MMLU)SourceSeptember 21, 2026
LiveCodeBench
90.33%
Contamination-free competitive programming problemsSourceSeptember 21, 2026

Sakana Namazu vs other models

ModelInputOutputContextBest for
Sakana Namazu
This page
$1.30663 / 1M tokens
$5.5016 / 1M tokens
256K tokens
Japanese-language business & reasoning tasks
$3.9 / 1M tokens
$19.5 / 1M tokens
1M tokens
Long-context, multimodal & agentic workflows
$2.6 / 1M tokens
$7.8 / 1M tokens
500K tokens
Reasoning + agents with long context
$5.2 / 1M tokens
$26 / 1M tokens
1M tokens
Frontier reasoning + agents

Frequently asked questions

Sakana Namazu has a 262,144 tokens context window and can return up to 65,536 tokens.

Sakana Namazu takes image, text as input and returns text.

Use sakana/sakana-namazu as the model id. Requests go to https://api.aimlapi.com/v1/chat/completions.

Sakana Namazu became available on August 11, 2026.

Sakana Namazu is priced at input $1.30663 / 1M tokens, output $5.5016 / 1M tokens, cached input $0.20631 / 1M tokens.

Yes, Sakana Namazu can stream responses as they are generated.

Yes, Sakana Namazu accepts image input alongside text.

Sakana Namazu was built by Sakana AI.

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