Gemini 3.8 Flash vs Grok Build 0.1
Price and specs side by side · USD per 1M tokens · verified 2026-10-11
// side by side
| metric | Gemini 3.8 Flash | Grok Build 0.1 |
|---|---|---|
| input / 1M | $0.75 | $1.00 |
| output / 1M | $3.75 | $2.00 |
| blended (3:1) | $1.50 | $1.25 |
| cache read / 1M | $0.075 | $0.20 |
| context | 1.05M | 256K |
| max output | 65.5K | 256K |
| input types | text · image · video · audio · pdf | text · image · pdf |
| reasoning | yes | yes |
| tool calling | yes | yes |
| structured output | yes | yes |
| open weights | no | no |
| released | 2026-09-02 | 2026-04-16 |
| knowledge cutoff | n/a | n/a |
| lab | xAI |
// monthly cost scenarios
| workload | tokens in / out | Gemini 3.8 Flash | Grok Build 0.1 |
|---|---|---|---|
| Chatbot | 10M / 2M | $15.00 | $14.00 |
| RAG app | 50M / 5M | $56.25 | $60.00 |
| Coding agent | 20M / 10M | $52.50 | $40.00 |
// verdict
- Grok Build 0.1 is 16.7% cheaper than Gemini 3.8 Flash on a blended 3:1 input/output basis.
- Gemini 3.8 Flash has the larger context window (1.05M vs 256K tokens).