GPT OSS 20B vs Claude Opus 4.6 (EU)
GPT OSS 20B is cheaper on output tokens, while Claude Opus 4.6 (EU) offers a larger context window. Choose GPT OSS 20B or Claude Opus 4.6 (EU) based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | GPT OSS 20B | Claude Opus 4.6 (EU) |
|---|---|---|
| Provider | Neon | Requesty |
| Input / 1M tokens | $0.07 | $5.50 |
| Output / 1M tokens | $0.30 | $27.50 |
| Context window | 131K | 1M |
| Parameters | 21B | — |
| Open weights | Yes | No |
| Released | Aug 2025 | Feb 2026 |
FAQ
Is GPT OSS 20B or Claude Opus 4.6 (EU) cheaper?
GPT OSS 20B is cheaper on output tokens ($0.30 vs $27.50 per 1M).
Which has the larger context window, GPT OSS 20B or Claude Opus 4.6 (EU)?
Claude Opus 4.6 (EU) has the larger context window (1M tokens).
Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.