Grok Code Fast 1 vs CSM 1B
Both have similar output pricing, while Grok Code Fast 1 offers a larger context window. Choose Grok Code Fast 1 or CSM 1B based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | Grok Code Fast 1 | CSM 1B |
|---|---|---|
| Provider | OpenCode | Sesame |
| Input / 1M tokens | $0.00 | $7.00 |
| Output / 1M tokens | $0.00 | $0.00 |
| Context window | 256K | 4K |
| Parameters | — | — |
| Open weights | No | — |
| Released | Aug 2025 | — |
| LMArena WebDev Elo score | 1166 | — |
FAQ
Is Grok Code Fast 1 or CSM 1B cheaper?
Grok Code Fast 1 and CSM 1B have comparable output pricing.
Which has the larger context window, Grok Code Fast 1 or CSM 1B?
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.