Mistral Large 4 vs Muse Spark 1.3 Contributor, head to head

Side A

Side B

Overall

Muse Spark 1.3 Contributor is clearly better. It wins 73 of the 81 test cases where they differ.

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Task by task

A score turns orange only when that model wins clearly more of the task's test cases. Under each score, the average time per test case on the machine it ran on. Muse Spark 1.3 Contributor spends 1.8× as many thinking tokens per test case.

Thinking tokensAnswer tokens

TaskAMistral Large 4BMuse Spark 1.3 ContributorMistral Large 4Muse Spark 1.3 Contributor

Overall

281m 56s

6.2K8.7K

661m 42s

Agents

Runs multi-step jobs through tools, within a written policy

1126.1s

79514.7K

573m 16s

Structured Extraction

Turns logs, diffs and records into exact JSON

153.78s

2884.2K

9037.9s

Coding

Writes code and SQL that pass hidden tests

332m 48s

9.3K10.8K

482m 1s

Grounded Answers

Answers from the given documents with sources, never guesses

382m 45s

8.1K6.1K

811m 1s

Instruction Following

Applies every rule, including ones changed mid-conversation

693m 47s

12.9K8.7K

841m 18s

Business Logic

Computes billing, scheduling and pricing rules exactly

242m 40s

8.8K6K

761m 7s

Security & permissions

Ignores planted instructions, still does the allowed work

331m 9s

3.7K8.2K

761m 59s

Diagnosis & investigation

Chooses diagnostic checks, repairs supported causes and verifies recovery

01m 19s

4.4K17.2K

173m 34s

What you'd run

The build behind each score. Orange marks the faster, smaller, cheaper or longer-context side.

SpecAMistral Large 4BMuse Spark 1.3 Contributor

Speed

56 tok/s

107 tok/s

Machine

Hosted

Memory at 32K

—

Context

512K

Cost per run

$2.67

$0.41

Cost per case

$0.017

$0.0027

Time per case

1m 56s

1m 42s

Quantization

—

Harness

openrouter

The race

No lead changes

Each model's running score as the test cases go by. The dashed line is a perfect run.

Mistral Large 4Muse Spark 1.3 Contributor

Every test case

153 test cases

Each square is one test case, colored by the model that scored higher.

Agents111

Structured Extraction018

Coding58

Grounded Answers09

Instruction Following26

Business Logic011

Security & permissions09

Diagnosis & investigation01

8 won by Mistral Large 473 won by Muse Spark 1.3 Contributor72 tied