Claude Sonnet 4.5 (AU) vs GPT OSS 20B
GPT OSS 20B is cheaper on output tokens, while Claude Sonnet 4.5 (AU) offers a larger context window. Choose Claude Sonnet 4.5 (AU) or GPT OSS 20B based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | Claude Sonnet 4.5 (AU) | GPT OSS 20B |
|---|---|---|
| Provider | Amazon Bedrock | Neon |
| Input / 1M tokens | $3.30 | $0.07 |
| Output / 1M tokens | $16.50 | $0.30 |
| Context window | 200K | 131K |
| Parameters | — | 21B |
| Open weights | No | Yes |
| Released | Sep 2025 | Aug 2025 |
FAQ
Is Claude Sonnet 4.5 (AU) or GPT OSS 20B cheaper?
GPT OSS 20B is cheaper on output tokens ($0.30 vs $16.50 per 1M).
Which has the larger context window, Claude Sonnet 4.5 (AU) or GPT OSS 20B?
Claude Sonnet 4.5 (AU) has the larger context window (200K tokens).
Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.