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Meta · Language model

Muse Spark 1.2

meta/muse-spark-1.2
  • Language
Released Aug 5, 2026

Muse Spark 1.2 is a reasoning model from Meta, designed for complex agentic tasks. It accepts text, images, video, and PDF documents, returns text, and offers a 1M-token context window....

Specifications

Context window
1,048,576 tokens
Max output
943,718 tokens
Input
text, image, video, file
Output
text
Reasoning effort
xhigh, high, medium, low, minimal (always on)
Tokenizer
Other
Moderation
provider-moderated

Supported parameters

Accepted by the model and forwarded as-is by the gateway.

  • max_tokens
  • reasoning
  • reasoning_effort
  • repetition_penalty
  • response_format
  • structured_outputs
  • temperature
  • tool_choice
  • tools
  • top_k
  • top_p

Use it

POST /api/v1/chat/completions · MCP chat · full reference

curl https://omnirail.org/api/v1/chat/completions \
  -H "Authorization: Bearer $OMNIRAIL_KEY" -H "Content-Type: application/json" \
  -d '{"model":"meta/muse-spark-1.2","messages":[{"role":"user","content":"Hello"}],"max_tokens":300}'