token.app › Compare › gpt-oss-20b vs Muse Spark 1.2
gpt-oss-20b vs Muse Spark 1.2
gpt-oss-20b is 36× 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
| gpt-oss-20b | Muse Spark 1.2 | |
|---|---|---|
| Provider | OpenAI | Meta |
| Input $/1M | $0.030 | $1.25 |
| Output $/1M | $0.130 | $4.25 |
| Blended $/1M | $0.055 | $2.00 |
| Context window | 131K | 1.0M |
| Max output | 131K | — |
| Released | Aug 2025 | Aug 2026 |
| Licence | Open weights | Proprietary |
Choose gpt-oss-20b if…
- Costs less per token — $0.055 vs $2.00 blended
- Open weights — self-hostable
Choose Muse Spark 1.2 if…
- Larger context window (1.0M)
- Newer model (released Aug 2026)
FAQ
Which is better, gpt-oss-20b or Muse Spark 1.2?
We do not hold independently-run benchmark scores covering both gpt-oss-20b and Muse Spark 1.2, so we make no quality claim. Their pricing and specifications are compared on this page.
Is gpt-oss-20b cheaper than Muse Spark 1.2?
gpt-oss-20b is cheaper: $0.055 versus $2.00 per million tokens blended at 3:1 input:output. Input alone: $0.030 vs $1.25. Output alone: $0.130 vs $4.25.
What context windows do gpt-oss-20b and Muse Spark 1.2 have?
gpt-oss-20b: 131,072 tokens. Muse Spark 1.2: 1,048,576 tokens.
Who makes gpt-oss-20b and Muse Spark 1.2?
gpt-oss-20b is made by OpenAI. Muse Spark 1.2 is made by Meta.