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Meta · Language model

Muse Spark 1.3 Contributor

meta/muse-spark-1.3-contributor
  • Language
Released Sep 2, 2026

Muse Spark 1.3 Contributor is the cost-efficient contributor tier of Meta’s multimodal reasoning model for experimentation, learning, and early-stage agentic, multi-agent, and coding workflows. It is designed to track information...

Specifications

Context window
1,048,576 tokens
Max output
943,718 tokens
Input
text, image, video, file
Output
text
Reasoning effort
max, 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-1.3-contributor","messages":[{"role":"user","content":"Hello"}],"max_tokens":300}'