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Mistral Small 4 vs Muse Spark Open

Muse Spark Open leads the LLM Stats Score 44.9 to 18.6. Mistral Small 4 is 7.6x cheaper per token.

Mistral AI · Meta · Updated for 2026

Which is better?

Muse Spark Open leads the overall LLM Stats Score 44.9 to 18.6, ranking #43 overall.

In the 1 individual benchmarks reported for both models, Muse Spark Open wins 1; this is a narrower head-to-head signal than the composite indexes.

On price, Mistral Small 4 is roughly 7.6x 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 Mistral Small 4

  • cost matters — it's about 7.6x cheaper per token

Choose Muse Spark Open

  • overall performance matters — it scores 44.9 and ranks #43 on LLM Stats
  • your work emphasizes reasoning and coding — it leads those capability indexes
  • you value its reported benchmark strengths — it wins 1 of 1 exact shared results
  • you process long inputs — it offers a 1,048,576 token context window
  • you want the most recent training data — it shipped Oct 2026

At a glance

The differences that matter most.

Mistral Small 4
Mistral AI
Muse Spark Open
Meta
Core performance indexes
LLM Stats Score
18.6
#233
44.9
#43
Reasoning
19.5
#219
45.2
#39
Coding
10.6
#183
33.0
#42
Cost, coverage & limits
Benchmark wins
0 of 1
1 of 1
Input price
$0.15 / M
$1.25 / M
Output price
$0.60 / M
$4.25 / M
Context window
256,000
1,048,576

Capability indexes

Additional strengths measured across groups of related public benchmarks

1 shared
Index
Mistral Small 4
Muse Spark Open
Math
19.0#180
31.6#69
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

9 reported for Mistral Small 4 · 17 for Muse Spark Open

1 shared

Mistral Small 4 outperforms in 0 benchmarks, while Muse Spark Open is better at 1 benchmark (GPQA).

Muse Spark Open significantly outperforms across most benchmarks.

Mon Oct 19 2026 • llm-stats.com

Human preference

Blind head-to-head votes and playground preference scores

Pricing Analysis

Price comparison per million tokens

Mistral Small 4 costs less

For input processing, Mistral Small 4 ($0.15/1M tokens) is 8.3x cheaper than Muse Spark Open ($1.25/1M tokens).

For output processing, Mistral Small 4 ($0.60/1M tokens) is 7.1x cheaper than Muse Spark Open ($4.25/1M tokens).

In conclusion, Muse Spark Open is more expensive than Mistral Small 4.*

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

Lowest available price from all providers
Mon Oct 19 2026 • llm-stats.com
Mistral AI
Mistral Small 4
Input tokens$0.15
Output tokens$0.60
Best providerMistral
Meta
Muse Spark Open
Input tokens$1.25
Output tokens$4.25
Best providerTogether
Notice missing or incorrect data?

Model Size

Parameter count comparison

697.0B diff

Muse Spark Open has 697.0B more parameters than Mistral Small 4, making it 585.7% larger.

Mistral AI
Mistral Small 4
119.0Bparameters
Meta
Muse Spark Open
816.0Bparameters
119.0B
Mistral Small 4
816.0B
Muse Spark Open

Context Window

Maximum input and output token capacity

Muse Spark Open accepts 1,048,576 input tokens compared to Mistral Small 4's 256,000 tokens. Muse Spark Open can generate longer responses up to 1,048,576 tokens, while Mistral Small 4 is limited to 256,000 tokens.

Mistral AI
Mistral Small 4
Input256,000 tokens
Output256,000 tokens
Meta
Muse Spark Open
Input1,048,576 tokens
Output1,048,576 tokens
Mon Oct 19 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Both Mistral Small 4 and Muse Spark Open support multimodal inputs.

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

Mistral Small 4

Text
Images
Audio
Video

Muse Spark Open

Text
Images
Audio
Video

License

Usage and distribution terms

Mistral Small 4 is licensed under Apache 2.0, while Muse Spark Open uses Muse Model License.

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

Mistral Small 4

Apache 2.0

Open weights

Muse Spark Open

Muse Model License

Open weights

Release Timeline

When each model was launched

Mistral Small 4 was released on 2026-03-16, while Muse Spark Open was released on 2026-10-15.

Muse Spark Open is 7 months newer than Mistral Small 4.

Mistral Small 4

Mar 16, 2026

7 months ago

Muse Spark Open

Oct 15, 2026

4 days ago

7mo newer

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

Mistral Small 4 is available from Mistral AI. Muse Spark Open is available from Together.

Mistral Small 4

mistral logo
Mistral
Input Price:Input: $0.15/1MOutput Price:Output: $0.60/1M

Muse Spark Open

together logo
Together
Input Price:Input: $1.25/1MOutput Price:Output: $4.25/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?

Judge for yourself.

Run your own prompts against Mistral Small 4 and Muse Spark Open side-by-side, then vote on the output you prefer.

Mistral Small 4
✓ Preferred
Muse Spark Open
Open in Playground

FAQ

Common questions about Mistral Small 4 vs Muse Spark Open.

Which is better, Mistral Small 4 or Muse Spark Open?

Muse Spark Open leads the LLM Stats Score 44.9 to 18.6. Mistral Small 4 is made by Mistral AI and Muse Spark Open is made by Meta. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does Mistral Small 4 compare to Muse Spark Open in benchmarks?

Mistral Small 4 scores AIME 2025: 83.8%, MMLU-Pro: 78.0%, AA-LCR: 71.2%, GPQA: 71.2%, LiveCodeBench: 63.6%. Muse Spark Open scores MCP Atlas: 89.2%, GPQA: 89.0%, OSWorld-Verified: 80.4%, BabyVision: 80.2%, Terminal-Bench 2.1: 76.4%.

Is Mistral Small 4 cheaper than Muse Spark Open?

Mistral Small 4 is 8.3x cheaper for input tokens. Mistral Small 4 costs $0.15/M input and $0.60/M output via mistral. Muse Spark Open costs $1.25/M input and $4.25/M output via together.

What are the context window sizes for Mistral Small 4 and Muse Spark Open?

Mistral Small 4 supports 256K tokens and Muse Spark Open supports 1.0M tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Mistral Small 4 and Muse Spark Open?

Key differences include LLM Stats Score (18.6 vs 44.9), context window (256K vs 1.0M), input pricing ($0.15 vs $1.25/M), licensing (Apache 2.0 vs Muse Model License). See the full comparison above for benchmark-by-benchmark results.

Who makes Mistral Small 4 and Muse Spark Open?

Mistral Small 4 is developed by Mistral AI and Muse Spark Open is developed by Meta.

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