token.app › Compare › GPT-5.6 Luna (batch) vs Muse Spark 1.2

GPT-5.6 Luna (batch) vs Muse Spark 1.2

GPT-5.6 Luna (batch) is 8.9× cheaper per token on a blended 3:1 basis. GPT-5.6 Luna (batch) accepts the larger context window (1.1M).

Head to head
Blended price uses a 3:1 input:output mix
GPT-5.6 Luna (batch)Muse Spark 1.2
ProviderOpenAIMeta
Input $/1M$0.100$1.25
Output $/1M$0.600$4.25
Blended $/1M$0.225$2.00
Context window1.1M1.0M
Max output128K—
ReleasedJul 2026Aug 2026
LicenceProprietaryProprietary
Choose GPT-5.6 Luna (batch) if…
  • Costs less per token — $0.225 vs $2.00 blended
  • Larger context window (1.1M)
Choose Muse Spark 1.2 if…
  • Newer model (released Aug 2026)
FAQ
Which is better, GPT-5.6 Luna (batch) or Muse Spark 1.2?
We do not hold independently-run benchmark scores covering both GPT-5.6 Luna (batch) and Muse Spark 1.2, so we make no quality claim. Their pricing and specifications are compared on this page.
Is GPT-5.6 Luna (batch) cheaper than Muse Spark 1.2?
GPT-5.6 Luna (batch) is cheaper: $0.225 versus $2.00 per million tokens blended at 3:1 input:output. Input alone: $0.100 vs $1.25. Output alone: $0.600 vs $4.25.
What context windows do GPT-5.6 Luna (batch) and Muse Spark 1.2 have?
GPT-5.6 Luna (batch): 1,050,000 tokens. Muse Spark 1.2: 1,048,576 tokens.
Who makes GPT-5.6 Luna (batch) and Muse Spark 1.2?
GPT-5.6 Luna (batch) is made by OpenAI. Muse Spark 1.2 is made by Meta.
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