GPT OSS 20B vs Grok Code Fast 1
Grok Code Fast 1 is cheaper on output tokens, while Grok Code Fast 1 offers a larger context window. Choose GPT OSS 20B or Grok Code Fast 1 based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | GPT OSS 20B | Grok Code Fast 1 |
|---|---|---|
| Provider | Neon | OpenCode |
| Input / 1M tokens | $0.07 | $0.00 |
| Output / 1M tokens | $0.30 | $0.00 |
| Context window | 131K | 256K |
| Parameters | 21B | — |
| Open weights | Yes | No |
| Released | Aug 2025 | Sep 2025 |
| LMArena WebDev Elo score | — | 1166 |
FAQ
Is GPT OSS 20B or Grok Code Fast 1 cheaper?
Grok Code Fast 1 is cheaper on output tokens ($0.00 vs $0.30 per 1M).
Which has the larger context window, GPT OSS 20B or Grok Code Fast 1?
Grok Code Fast 1 has the larger context window (256K tokens).
Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.