Inkling
The first open-weight large language model released by Thinking Machines Lab, made publicly available under an open-weight model distribution scheme and targeting the developer and research community.
Timeline (last 90 days)
Fireworks now sends the top-level reasoning value directly instead of uniformly capping it at 'high', but retains exceptions for model families known to reject specific values: GPT-OSS, GLM-5.3 and Muse Spark reject 'none', while Nemotron and Inkling reject 'minimal'.
Artificial Analysis gave MuseSpark Open a score of 39, tied for 17th on the overall leaderboard, 7th among open-source models, about 7 points behind the open-source SOTA, and about 13 points ahead of Nemotron and Inkling.
On the JobBench agent evaluation suite, Muse Spark Open scores 61.8, far exceeding the 31.1 of comparable competitor Inkling.
All Facts (3)
Fireworks now sends the top-level reasoning value directly instead of uniformly capping it at 'high', but retains exceptions for model families known to reject specific values: GPT-OSS, GLM-5.3 and Muse Spark reject 'none', while Nemotron and Inkling reject 'minimal'.
50%UnverifiedArtificial Analysis gave MuseSpark Open a score of 39, tied for 17th on the overall leaderboard, 7th among open-source models, about 7 points behind the open-source SOTA, and about 13 points ahead of Nemotron and Inkling.
50%UnverifiedOn the JobBench agent evaluation suite, Muse Spark Open scores 61.8, far exceeding the 31.1 of comparable competitor Inkling.
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