Muse Spark 1.2

meta/muse-spark-1.2

A chat model with a 1M-token context window, at $1.3125 per million input tokens and $4.4625 per million output tokens.

Details

Maker: meta
Kind: Chat
Context window: 1,048,576 tokens
Max output: 1,048,576 tokens
Input: $1.3125 per million tokens
Cached input: $0.1575 per million tokens, 88% off
Cache write: Same as input
Output: $4.4625 per million tokens
Capabilities: Reasoning, tool use, vision, file input
Takes: Text, image, pdf
Returns: Text
Zero data retention: Yes, on every provider
No training on requests: Yes, on every provider
Released: 2026-08-05
Newer model: meta/muse-spark-1.3Released later by the same maker, costs no more, and lists the same capabilities. Compare the two

Description

A coding-optimized model purpose-built for agentic workflows. Improvements to code generation, debugging, and codebase understanding — with a 1M context window that handles your entire project in one session.

Call it

curl

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

Set PHANTOM_KEY to your key. Any OpenAI client works with the base URL https://phantom.codes/v1.

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