Grok 4 vs Grok Code Fast 1
Benchmarks, API pricing and specs, head to head. Data updated 2026-06-10.
Grok 4
xAI · Jul 2025
xAI's mid-2025 flagship, trained on the 200K-GPU Colossus cluster — a math and science reasoning standout of its generation.
Grok Code Fast 1
xAI · Aug 2025
A speed-first coding model built for agentic IDE loops, popular as a cheap fast tier in Cursor and similar tools.
The verdict
These two models don't yet share verified results on the benchmarks we track, so judge them on specs, pricing and intended use. On price the gap is dramatic: Grok Code Fast 1 works out roughly 11x cheaper per blended million tokens.
Specs & pricing
| Grok 4 | Grok Code Fast 1 | |
|---|---|---|
| modhub Index | — | — |
| Input price / 1M | $3 | $0.2 |
| Output price / 1M | $15 | $1.5 |
| Context window | 256K | 256K |
| Max output | — | — |
| Open weights | no | no |
| Reasoning model | yes | yes |
| Multimodal input | text, image | text |
| Knowledge cutoff | Jul 2025 | Aug 2025 |
| Released | Jul 2025 | Aug 2025 |
| Example monthly cost* | $52.50 | $4.25 |
* 10M input + 1.5M output tokens per month at list prices, no caching. Green = better value on that row.
Frequently asked questions
- Which is better, Grok 4 or Grok Code Fast 1?
- These two models don't yet share verified results on the benchmarks we track, so judge them on specs, pricing and intended use. On price the gap is dramatic: Grok Code Fast 1 works out roughly 11x cheaper per blended million tokens.
- Which is cheaper, Grok 4 or Grok Code Fast 1?
- Grok 4 costs $3/$15 per million input/output tokens, while Grok Code Fast 1 costs $0.2/$1.5. For a typical workload of 10M input and 1.5M output tokens per month, that's $52.50 versus $4.25.
- Which model is better for coding, Grok 4 or Grok Code Fast 1?
- We don't yet track SWE-bench Verified results for both models; check their individual pages for coding-related scores.