Muse Spark 1.2: benchmarks, price and rank
Muse Spark 1.2 from Meta is 34th of 123 rated AI models on Spezia's leaderboard. It costs $1.25 in, $4.25 out per million tokens.
- 34th of 123 rated models
- Rating 1,448
- Rated on 7 benchmarks
- Closed
- Released Aug 5, 2026
- 1 million tokens of context
Where it is strongest
Not in the top tenth on any benchmark in use.
Where it falls behind
- 21st of 21 on FrontierSWE
- 23rd of 27 on DeepSWE 1.1
- 15th of 18 on LifeSci Diamond
Price: $1.25 in, $4.25 out per million tokens.
Its headline results
The benchmarks that count most in the rating, with its place among the models measured the same way, and where each number came from.
- APEX-Agents45.4%
Long tasks written by investment banking analysts, management consultants and corporate lawyers from their own work, done across files and apps in a realistic work setup.
40th of 56. Independent result from Epoch AI.
- FrontierSWE12.0%
Open-ended technical projects that take hours to tens of hours, from making systems faster to building large programs and applied machine learning research. Each run gets a 20-hour budget.
21st of 21. Independent result from Epoch AI.
- DeepSWE 1.159.3%
Software engineering tasks run in the same simple agent setup for every model.
23rd of 27. The maker's own number, from Meta, via LLM Stats.
- SimpleBench74.5%
Multiple-choice puzzles about everyday situations, space, time and people, written to trip up models that pattern-match instead of think. Ordinary adults do well on them.
18th of 68. Independent result from Epoch AI.
- SimpleQA Verified60.3%
Short factual questions with one checked answer, asked without web search.
19th of 78. Independent result from Epoch AI.
- LMArena text1,484
People put a question to two anonymous models and vote for the better answer.
14th of 107. Independent result from LMArena.
- LMArena WebDev1,534
People ask two anonymous models to build the same web page or app and vote for the better one.
44th of 98. Independent result from LMArena.
- LifeSci Diamond0%
55 regulatory affairs tasks from drug and device makers, such as FDA and EMA submissions, labeling and compliance, with answer keys written or reviewed by practising specialists.
15th of 18. Independent result from Arca, via LLM Stats.
- Epoch Capabilities Index155
One score built from dozens of benchmarks, set on a common scale so that models tested on different benchmarks can still be compared.
43rd of 94. Independent result from Epoch AI.
Its full profile is in Spezia.
Every result with its source, what it costs per task, what jumped with its release, side by side with any other model, and answers to your questions about when to use it.
Models ranked near it
How the rating works, and every benchmark it uses: the model leaderboard.