Muse Spark
Muse SparkAlternatives?
CheaperGemini 3.8 Flashhighsame-25%*$1.24Sampling parameters are ignored+1BetterMuse Spark 1.3maxwins 54%same$1.60Only auto tool_choice is supported+5
OpenGLM 5.3maxsame+7%$2.01No image input+4CheaperGemini 3 Flash Previewunstatedsame-44%$0.50 / $3CheaperGemini 3.6 Flashhighwins 48%-25%*$1.60Gemini 3.8 Flashhighsame-25%*$1.24Sampling parameters are ignored+1Gemini 3 Flash Previewunstatedsame-44%$0.50 / $3Gemini 3.6 Flashhighwins 48%-25%*$1.60
Qwen3.7 Plusunstatedwins 46%-72%$0.32 / $1.28GLM 5.3 FlashunstatedOpenwins 46%-88%$0.15 / $0.50Defaults to max · Self-hosted+4Muse Spark 1.3maxwins 54%same$1.60Only auto tool_choice is supported+5
Claude Opus 5maxwins 54%+400%$5.86GLM 5.3maxOpensame+7%$2.01No image input+4
Kimi K3maxOpensame+200%$2.00Sampling parameters are fixed+3
NVIDIA Nemotron 3 Ultra 550B A55B NVFP4Openwins 46%——Context: 1M → 262K+1GLM 5.2maxOpenwins 46%+7%$1.47No image inputGLM 5.1unstatedOpenwins 46%+7%$1.40 / $4.40Context: 1M → 203K+1Muse Spark 1.3maxwins 54%—$1.60Only auto tool_choice is supported+5Muse Spark 1.1unstatedwins 46%—$1.25 / $4.25Only n=1 · Meta / Chat Completions+1Llama 4 MaverickunstatedOpenwins 23%—$0.19 / $0.65Llama 4 ScoutunstatedOpenwins 22%—$0.10 / $0.30Llama 3.3 70B InstructunstatedOpenwins 19%—$0.10 / $0.32Context: 1M → 128K+1Llama 3.1 70B InstructunstatedOpenwins 17%—$0.40 / $0.40Context: 1M → 131K+1Llama 3 70B InstructOpenwins 13%——Context: 1M → 8K+1Llama 3.1 8B InstructunstatedOpenwins 12%—$0.02 / $0.04Context: 1M → 131K+1All Meta models →History
4 versionsBenchmarks
in Chat & KnowledgeWatch 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 Fable 5.1?›
On Arena Text · German, Muse Spark scores 1,497.6 vs 1,501.7 — 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 GLM 5.3.
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), Muse Spark 1.3 (better), GLM 5.3 (open weights).