Gemini 2.5 Flash-Lite vs Grok 4.1 Fast
Benchmarks, API pricing and specs, head to head. Data updated 2026-06-10.
Gemini 2.5 Flash-Lite
Google · Jul 2025
Ten cents per million input tokens with multimodal support — the price floor of the 2025 Gemini lineup.
Grok 4.1 Fast
xAI · Nov 2025
A 2M-token context window for $0.20 per million input tokens — the cheapest long-context frontier offering anywhere.
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. Gemini 2.5 Flash-Lite is about 1.6x cheaper per blended million tokens (3:1 input:output mix). Grok 4.1 Fast also takes 2M of context versus 1.0M for Gemini 2.5 Flash-Lite.
Specs & pricing
| Gemini 2.5 Flash-Lite | Grok 4.1 Fast | |
|---|---|---|
| modhub Index | — | — |
| Input price / 1M | $0.1 | $0.2 |
| Output price / 1M | $0.4 | $0.5 |
| Context window | 1.0M | 2M |
| Max output | 66K | — |
| Open weights | no | no |
| Reasoning model | no | yes |
| Multimodal input | text, image, audio, video | text, image |
| Knowledge cutoff | Jan 2025 | Nov 2025 |
| Released | Jul 2025 | Nov 2025 |
| Example monthly cost* | $1.60 | $2.75 |
* 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-Lite or Grok 4.1 Fast?
- These two models don't yet share verified results on the benchmarks we track, so judge them on specs, pricing and intended use. Gemini 2.5 Flash-Lite is about 1.6x cheaper per blended million tokens (3:1 input:output mix). Grok 4.1 Fast also takes 2M of context versus 1.0M for Gemini 2.5 Flash-Lite.
- Which is cheaper, Gemini 2.5 Flash-Lite or Grok 4.1 Fast?
- Gemini 2.5 Flash-Lite costs $0.1/$0.4 per million input/output tokens, while Grok 4.1 Fast costs $0.2/$0.5. For a typical workload of 10M input and 1.5M output tokens per month, that's $1.60 versus $2.75.
- Which model is better for coding, Gemini 2.5 Flash-Lite or Grok 4.1 Fast?
- We don't yet track SWE-bench Verified results for both models; check their individual pages for coding-related scores.
More comparisons
Gemini 2.5 Flash-Lite vs GPT-5.5Grok 4.1 Fast vs GPT-5.5Gemini 2.5 Flash-Lite vs GPT-5.2Grok 4.1 Fast vs GPT-5.2Gemini 2.5 Flash-Lite vs GPT-5.1Grok 4.1 Fast vs GPT-5.1Gemini 2.5 Flash-Lite vs GPT-5Grok 4.1 Fast vs GPT-5Gemini 2.5 Flash-Lite vs GPT-5 miniGrok 4.1 Fast vs GPT-5 miniGemini 2.5 Flash-Lite vs OpenAI o3Grok 4.1 Fast vs OpenAI o3