token.app › Compare › o3 Pro vs Muse Spark 1.2
o3 Pro vs Muse Spark 1.2
Muse Spark 1.2 is 18× cheaper per token on a blended 3:1 basis. Muse Spark 1.2 accepts the larger context window (1.0M).
Head to head
Blended price uses a 3:1 input:output mix
| o3 Pro | Muse Spark 1.2 | |
|---|---|---|
| Provider | OpenAI | Meta |
| Input $/1M | $20.00 | $1.25 |
| Output $/1M | $80.00 | $4.25 |
| Blended $/1M | $35.00 | $2.00 |
| Context window | 200K | 1.0M |
| Max output | 100K | — |
| Released | Jun 2025 | Aug 2026 |
| Licence | Proprietary | Proprietary |
Choose o3 Pro if…
- No clear advantage on the data we hold.
Choose Muse Spark 1.2 if…
- Costs less per token — $2.00 vs $35.00 blended
- Larger context window (1.0M)
- Newer model (released Aug 2026)
FAQ
Which is better, o3 Pro or Muse Spark 1.2?
We do not hold independently-run benchmark scores covering both o3 Pro and Muse Spark 1.2, so we make no quality claim. Their pricing and specifications are compared on this page.
Is o3 Pro cheaper than Muse Spark 1.2?
Muse Spark 1.2 is cheaper: $2.00 versus $35.00 per million tokens blended at 3:1 input:output. Input alone: $20.00 vs $1.25. Output alone: $80.00 vs $4.25.
What context windows do o3 Pro and Muse Spark 1.2 have?
o3 Pro: 200,000 tokens. Muse Spark 1.2: 1,048,576 tokens.
Who makes o3 Pro and Muse Spark 1.2?
o3 Pro is made by OpenAI. Muse Spark 1.2 is made by Meta.