GPT OSS 20B vs Kimi K2.5
GPT OSS 20B is cheaper on output tokens, while Kimi K2.5 offers a larger context window. Choose GPT OSS 20B or Kimi K2.5 based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | GPT OSS 20B | Kimi K2.5 |
|---|---|---|
| Provider | Vercel AI Gateway | Vercel AI Gateway |
| Input / 1M tokens | $0.05 | $0.60 |
| Output / 1M tokens | $0.20 | $3.00 |
| Context window | 131K | 262K |
| Parameters | 21B | 1T |
| Open weights | Yes | Yes |
| Released | Aug 2025 | Jan 2026 |
FAQ
Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.