Cheapest place to run gpt-oss-120b
Three providers serve gpt-oss-120b. The dearest costs 3.8× what the cheapest does for the same tokens.
Every host, ranked cheapest first
| Provider | Input / 1M | Output / 1M | Blended (4:1) | Context window |
|---|---|---|---|---|
| OpenRouterCheapest | $0.037 | $0.17 | $0.0636 | 131K |
| Fireworks AI | $0.15 | $0.60 | $0.24 | 131K |
| Groq | $0.15 | $0.60 | $0.24 | 131K |
Running 10M input / 2.5M output tokens a month costs $0.80 at OpenRouter and $3.00 at Groq — a difference of $2.21 a month.
What this ranking does not tell you
These are list prices for the same open weights served by different providers, nothing more. A cheaper host is not automatically the better one: providers running the same model can still differ in context window, quantisation, throughput, rate limits and region availability, and none of those show up in a price column. Check the provider's own page for the details that matter for your workload before switching.