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Muse Spark Open vs Sakana Namazu

Muse Spark Open and Sakana Namazu are closely matched at 45.3 and 41.7 on the LLM Stats Score. Sakana Namazu is 1.2x cheaper per token.

Meta · Sakana AI · Updated for 2026

Which is better?

Muse Spark Open and Sakana Namazu are closely matched on the overall LLM Stats Score at 45.3 and 41.7.

On price, Sakana Namazu is roughly 1.2x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

Muse Spark Open also accepts a larger context window (1,048,576 input tokens), making it the stronger choice for long documents and large codebases.

Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.

Choose Muse Spark Open

  • you process long inputs — it offers a 1,048,576 token context window
  • you want the most recent training data — it shipped Oct 2026
  • you need open weights you can self-host or fine-tune

Choose Sakana Namazu

  • cost matters — it's about 1.2x cheaper per token

At a glance

The differences that matter most.

Muse Spark Open
Meta
Sakana Namazu
Sakana AI
Core performance indexes
LLM Stats Score
45.3
#42
41.7
#67
Reasoning
45.7
#35
41.5
#61
Cost, coverage & limits
Benchmark wins
—
—
Input price
$1.25 / M
$0.95 / M
Output price
$4.25 / M
$4.00 / M
Context window
1,048,576
256,000

Capability indexes

Additional strengths measured across groups of related public benchmarks

1 shared
Index
Muse Spark Open
Sakana Namazu
Math
33.3#58
37.9#28
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

17 reported for Muse Spark Open · 3 for Sakana Namazu

No common benchmarks found

Muse Spark Open and Sakana Namazudon't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.

Human preference

Blind head-to-head votes and playground preference scores

Pricing Analysis

Price comparison per million tokens

Sakana Namazu costs less

For input processing, Muse Spark Open ($1.25/1M tokens) is 1.3x more expensive than Sakana Namazu ($0.95/1M tokens).

For output processing, Muse Spark Open ($4.25/1M tokens) is 1.1x more expensive than Sakana Namazu ($4.00/1M tokens).

In conclusion, Muse Spark Open is more expensive than Sakana Namazu.*

* Using a 3:1 ratio of input to output tokens

Lowest available price from all providers
Fri Oct 23 2026 • llm-stats.com
Meta
Muse Spark Open
Input tokens$1.25
Output tokens$4.25
Best providerTogether
Sakana AI
Sakana Namazu
Input tokens$0.95
Output tokens$4.00
Best providerUnknown Organization
Notice missing or incorrect data?

Context Window

Maximum input and output token capacity

Muse Spark Open accepts 1,048,576 input tokens compared to Sakana Namazu's 256,000 tokens. Muse Spark Open can generate longer responses up to 1,048,576 tokens, while Sakana Namazu is limited to 256,000 tokens.

Meta
Muse Spark Open
Input1,048,576 tokens
Output1,048,576 tokens
Sakana AI
Sakana Namazu
Input256,000 tokens
Output256,000 tokens
Fri Oct 23 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Both Muse Spark Open and Sakana Namazu support multimodal inputs.

They are both capable of processing various types of data, offering versatility in application.

Muse Spark Open

Text
Images
Audio
Video

Sakana Namazu

Text
Images
Audio
Video

License

Usage and distribution terms

Muse Spark Open is licensed under Muse Model License, while Sakana Namazu uses a proprietary license.

License differences may affect how you can use these models in commercial or open-source projects.

Muse Spark Open

Muse Model License

Open weights

Sakana Namazu

Proprietary

Closed source

Release Timeline

When each model was launched

Muse Spark Open was released on 2026-10-15, while Sakana Namazu was released on 2026-08-03.

Muse Spark Open is 2 months newer than Sakana Namazu.

Muse Spark Open

Oct 15, 2026

4 days ago

2mo newer
Sakana Namazu

Aug 3, 2026

2 months ago

Knowledge Cutoff

When training data ends

Neither model specifies a knowledge cutoff date.

Unable to compare the recency of their training data.

No cutoff dates available

Provider Availability

Muse Spark Open is available from Together. Sakana Namazu is available from Sakana AI.

Muse Spark Open

together logo
Together
Input Price:Input: $1.25/1MOutput Price:Output: $4.25/1M

Sakana Namazu

sakana logo
Unknown Organization
Input Price:Input: $0.95/1MOutput Price:Output: $4.00/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?

Judge for yourself.

Run your own prompts against Muse Spark Open and Sakana Namazu side-by-side, then vote on the output you prefer.

Muse Spark Open
✓ Preferred
Sakana Namazu
Open in Playground

FAQ

Common questions about Muse Spark Open vs Sakana Namazu.

Which is better, Muse Spark Open or Sakana Namazu?

Muse Spark Open and Sakana Namazu are closely matched on the LLM Stats Score at 45.3 and 41.7. Muse Spark Open is made by Meta and Sakana Namazu is made by Sakana AI. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does Muse Spark Open compare to Sakana Namazu in benchmarks?

Muse Spark Open scores MCP Atlas: 89.2%, GPQA: 89.0%, OSWorld-Verified: 80.4%, BabyVision: 80.2%, Terminal-Bench 2.1: 76.4%. Sakana Namazu scores AIME 2026: 96.7%, LiveCodeBench v6: 90.3%, MMLU-Pro: 90.3%.

Is Muse Spark Open cheaper than Sakana Namazu?

Sakana Namazu is 1.3x cheaper for input tokens. Muse Spark Open costs $1.25/M input and $4.25/M output via together. Sakana Namazu costs $0.95/M input and $4.00/M output via sakana.

What are the context window sizes for Muse Spark Open and Sakana Namazu?

Muse Spark Open supports 1.0M tokens and Sakana Namazu supports 256K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Muse Spark Open and Sakana Namazu?

Key differences include LLM Stats Score (45.3 vs 41.7), context window (1.0M vs 256K), input pricing ($1.25 vs $0.95/M), licensing (Muse Model License vs Proprietary). See the full comparison above for benchmark-by-benchmark results.

Who makes Muse Spark Open and Sakana Namazu?

Muse Spark Open is developed by Meta and Sakana Namazu is developed by Sakana AI.

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