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Muse Spark 1.3 Contributor

meta/muse-spark-1.3-contributor

Muse Spark 1.3 Contributor is a reasoning model by Meta with vision, function calling, prompt caching, structured output — designed for complex, multi-step problem solving where accuracy matters more than speed. It supports a 1M token context window with up to 944K tokens of output. Priced at $0.1 per million input tokens and $0.2 per million output tokens, it is one of the most cost-efficient options in its class. Access Muse Spark 1.3 Contributor through Inworld LLM Inference with OpenAI SDK compatibility, built-in failover, and intelligent routing across providers.

Input
$0.10
Output
$0.20
Cache read
$0.002
Context
1M
Max output
943.7K
TextImage→Text
Function CallingReasoningPrompt CachingStructured outputVision
Run on your server. Set INWORLD_API_KEY to your API key. Python requires pip install openai; JavaScript requires Node.js 18+; save it as example.mjs.
curl --fail-with-body https://api.inworld.ai/v1/chat/completions \
  -H "Authorization: Basic $INWORLD_API_KEY" \
  -H 'Content-Type: application/json' \
  -d '{
    "model": "meta/muse-spark-1.3-contributor",
    "messages": [{"role": "user", "content": "Hello"}],
    "stream": true
  }'
Model Muse Spark 1.3 ContributorOpenAI SDK compatible

Pricing and providers

Access Muse Spark 1.3 Contributor through Inworld LLM Inference or speech to speech via meta. By using the providers below you agree to their terms, listed under each provider's name in the Legal section.

Modalities
metaThis pagemeta/muse-spark-1.3-contributor
$0.10$0.20$0.002—1M943.7K
TextImage→Text
Prices in USD per 1M tokens.

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