Muse Spark
Muse SparkRankingin thinking mode?
Alternatives?
CheaperGemini 3.8 Flashhighwins 53%-25%*$1.24Sampling parameters are ignored+1
OpenKimi K3maxsame+200%$2.00Sampling parameters are fixed+3CheaperGemini 3.6 Flashhighsame-25%*$1.60CheaperGemini 3 Flash Previewunstatedsame-44%$0.50 / $3
CheaperGLM 5unstatedOpenwins 48%-22%$1 / $3.20Context: 1M → 203K+1Gemini 3.8 Flashhighwins 53%-25%*$1.24Sampling parameters are ignored+1Gemini 3.6 Flashhighsame-25%*$1.60Gemini 3 Flash Previewunstatedsame-44%$0.50 / $3GLM 5unstatedOpenwins 48%-22%$1 / $3.20Context: 1M → 203K+1
MiMo v2.6 ProunstatedOpenwins 47%-73%$0.43 / $0.87Pass back reasoning_content+3Gemini 3.8 Flashhighwins 53%-25%*$1.24Sampling parameters are ignored+1
Claude Opus 5.5highwins 58%+300%$1.82No forced tool use+5Gemini 4 Argonhighwins 57%+100%*$1.99Synchronous output stops at 65,536+2Muse Wondermaxwins 53%+300%$4.52Only auto tool_choice is supported+5Claude Fable 5.1maxwins 53%+900%$7.63Replace forced tool_choice+5Kimi K3maxOpensame+200%$2.00Sampling parameters are fixed+3GLM 5.2maxOpensame+7%$1.47No image inputGLM 5.3maxOpensame+7%$2.01No image input+4GLM 5unstatedOpenwins 48%-22%$1 / $3.20Context: 1M → 203K+1GLM 5.1unstatedOpenwins 47%+7%$1.40 / $4.40Context: 1M → 203K+1Muse Wondermaxwins 53%—$4.52Only auto tool_choice is supported+5Muse Spark 1.3maxsame—$1.60Only auto tool_choice is supported+5Muse Spark 1.2xhighwins 47%—$0.97Only auto tool_choice is supported+1Muse Spark 1.1unstatedwins 47%—$1.25 / $4.25Only n=1 · Meta / Chat Completions+1Muse Glimmer 30BunstatedOpenwins 36%—$0.30 / $1.10Context: 1M → 131KLlama 4 MaverickunstatedOpenwins 29%—$0.19 / $0.65Llama 4 ScoutunstatedOpenwins 27%—$0.10 / $0.30Llama 3.3 70B InstructunstatedOpenwins 26%—$0.10 / $0.32Context: 1M → 128K+1All Meta models →History
4 versionsBenchmarks
all categoriesWatch out 2
Only n=1 · Meta / Chat Completions›
Requests with n greater than 1 return HTTP 400; request one completion at a time. Source ↗
Chat Completions cannot carry reasoning · Meta / Chat Completions›
For external keys, Chat Completions redacts reasoning_content to empty and cannot carry reasoning across turns; use Responses when continuity matters. Source ↗
FAQ
How much does Muse Spark cost?›
$1.25 per 1M input tokens and $4.25 per 1M output tokens; cached input $0.15 per 1M.
Is Muse Spark free to use?›
There is no free API; the cheapest paid price is $1.25 per 1M input tokens.
How good is Muse Spark, and what is it best at?›
#42 of 334 in Chat & Knowledge, #3 of 19 in Coding, #79 of 175 in Agents & Tool Use, #15 of 195 in Writing & Language, #16 of 124 in Vision & Documents. Strongest at: Tool calling, Reasoning, Science, Long context, Knowledge, Instructions, Vision.
Is Muse Spark better than Claude Sonnet 5.5?›
On Arena Text · creative writing, Muse Spark scores 1,465 vs 1,465 — about the same.
How can I use Muse Spark?›
Through the API of Meta.
What is the context window of Muse Spark?›
1M tokens.
When was Muse Spark released? Is there a newer version?›
Released 2026-04-08. It has been superseded by Muse Spark 1.1.
Is Muse Spark open source?›
No, Muse Spark is a closed model available through an API. The closest open-weights option here is Kimi K3.
Can Muse Spark read images?›
It accepts text and images, audio as input.
What is Muse Spark?›
Muse Spark is a closed language model from Meta, released Apr 2026.
What are the best alternatives to Muse Spark?›
Gemini 3.8 Flash (cheaper), Kimi K3 (open weights).