token.app › Compare › GPT-5.4 Pro vs Muse Spark 1.2
GPT-5.4 Pro vs Muse Spark 1.2
Muse Spark 1.2 is 34× cheaper per token on a blended 3:1 basis. GPT-5.4 Pro accepts the larger context window (1.1M).
Head to head
Blended price uses a 3:1 input:output mix
| GPT-5.4 Pro | Muse Spark 1.2 | |
|---|---|---|
| Provider | OpenAI | Meta |
| Input $/1M | $30.00 | $1.25 |
| Output $/1M | $180.00 | $4.25 |
| Blended $/1M | $67.50 | $2.00 |
| Context window | 1.1M | 1.0M |
| Max output | 128K | — |
| Released | Mar 2026 | Aug 2026 |
| Licence | Proprietary | Proprietary |
Choose GPT-5.4 Pro if…
- Larger context window (1.1M)
Choose Muse Spark 1.2 if…
- Costs less per token — $2.00 vs $67.50 blended
- Newer model (released Aug 2026)
FAQ
Which is better, GPT-5.4 Pro or Muse Spark 1.2?
We do not hold independently-run benchmark scores covering both GPT-5.4 Pro and Muse Spark 1.2, so we make no quality claim. Their pricing and specifications are compared on this page.
Is GPT-5.4 Pro cheaper than Muse Spark 1.2?
Muse Spark 1.2 is cheaper: $2.00 versus $67.50 per million tokens blended at 3:1 input:output. Input alone: $30.00 vs $1.25. Output alone: $180.00 vs $4.25.
What context windows do GPT-5.4 Pro and Muse Spark 1.2 have?
GPT-5.4 Pro: 1,050,000 tokens. Muse Spark 1.2: 1,048,576 tokens.
Who makes GPT-5.4 Pro and Muse Spark 1.2?
GPT-5.4 Pro is made by OpenAI. Muse Spark 1.2 is made by Meta.