Gemini 2.5 Flash vs Grok Code Fast 1
Benchmarks, API pricing and specs, head to head. Data updated 2026-06-10.
Gemini 2.5 Flash
Google · Jun 2025
The 2025 fast-tier favorite: hybrid reasoning, full multimodality and a 1M context at $0.30/$2.50.
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
Grok Code Fast 1 wins 1 of the 1 benchmarks these models share, against 0 for Gemini 2.5 Flash. Grok Code Fast 1 is about 1.6x cheaper per blended million tokens (3:1 input:output mix). Gemini 2.5 Flash also takes 1.0M of context versus 256K for Grok Code Fast 1.
Benchmark head-to-head 0–1
Specs & pricing
| Gemini 2.5 Flash | Grok Code Fast 1 | |
|---|---|---|
| modhub Index | — | — |
| Input price / 1M | $0.3 | $0.2 |
| Output price / 1M | $2.5 | $1.5 |
| Context window | 1.0M | 256K |
| Max output | 66K | — |
| Open weights | no | no |
| Reasoning model | yes | yes |
| Multimodal input | text, image, audio, video | text |
| Knowledge cutoff | Jan 2025 | Aug 2025 |
| Released | Jun 2025 | Aug 2025 |
| Example monthly cost* | $6.75 | $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, Gemini 2.5 Flash or Grok Code Fast 1?
- Grok Code Fast 1 wins 1 of the 1 benchmarks these models share, against 0 for Gemini 2.5 Flash. Grok Code Fast 1 is about 1.6x cheaper per blended million tokens (3:1 input:output mix). Gemini 2.5 Flash also takes 1.0M of context versus 256K for Grok Code Fast 1.
- Which is cheaper, Gemini 2.5 Flash or Grok Code Fast 1?
- Gemini 2.5 Flash costs $0.3/$2.5 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 $6.75 versus $4.25.
- Which model is better for coding, Gemini 2.5 Flash or Grok Code Fast 1?
- On SWE-bench Verified — the standard agentic-coding benchmark — Grok Code Fast 1 scores 70.8% versus ~48.9% for Gemini 2.5 Flash, making Grok Code Fast 1 the stronger pick for coding agents.
More comparisons
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