Devstral Small 2505 vs GPT OSS 20B
Both have similar output pricing, while GPT OSS 20B offers a larger context window. Choose Devstral Small 2505 or GPT OSS 20B based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | Devstral Small 2505 | GPT OSS 20B |
|---|---|---|
| Provider | Mistral | Neon |
| Input / 1M tokens | $0.10 | $0.07 |
| Output / 1M tokens | $0.30 | $0.30 |
| Context window | 128K | 131K |
| Parameters | — | 21B |
| Open weights | Yes | Yes |
| Released | May 2025 | Aug 2025 |
| SWE-bench Verified score | 56.4 | — |
FAQ
Is Devstral Small 2505 or GPT OSS 20B cheaper?
Devstral Small 2505 and GPT OSS 20B have comparable output pricing.
Which has the larger context window, Devstral Small 2505 or GPT OSS 20B?
GPT OSS 20B has the larger context window (131K tokens).
Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.