Gemini 3.1 Flash-LitevsGrok 4.1
Gemini 3.1 Flash-Lite | Grok 4.1 | |
|---|---|---|
| API pricingUSD per 1M tokens · lower wins | ||
Input priceWhat you pay for everything you send the model — your question, plus any documents or earlier conversation you include with it. | $0.25 | — |
Output priceWhat you pay for the text the model writes back. It is normally the dearer half: producing an answer costs more than reading one. | $1.50 | — |
Cached input priceA reduced rate for text you send over and over. If every request starts with the same instructions or the same document, the provider keeps a copy ready and charges less to read it again. | $0.025 | — |
| Benchmarks | ||
Arena Elo (Code)Community preference (code) — Like the text arena, but people vote on which AI writes better code. The votes become a chess-style Elo rating on arena.ai. Higher is better. | 1253 | 1209 |
| BenchmarksPublished by one model only | ||
BullshitBench v2Nonsense detection — Given a confidently-worded but nonsensical prompt, does the AI spot that it makes no sense and push back — instead of playing along and inventing an answer? The score is how often it clearly called out the nonsense. Higher is better. | 11% | — |
Arena Elo (Text)Community preference — Real people chat with two anonymous AIs side by side and vote for the answer they prefer. Votes become a chess-style Elo rating on arena.ai — it measures which AI people actually like, not test scores. Higher is better. | — | 1466 |
| Overview | ||
| Company | SpaceXAI | |
| Release date | Mar 3 2026 | Nov 17 2025 |
| Access | Proprietary | Proprietary |
Frequently asked questions
Gemini 3.1 Flash-Lite leads Grok 4.1 on 1 of the 1 benchmark they both report (Arena Elo (Code)). Only Gemini 3.1 Flash-Lite has a verified first-party API price: $0.25 per million input tokens and $1.50 per million output tokens. No pay-as-you-go API rate is tracked for Grok 4.1. Grok 4.1 shipped 106 days before Gemini 3.1 Flash-Lite, so benchmark comparisons should account for the intervening progress.
Published specifications for these two models are limited — see each model page for the latest details.
On Arena Elo (Code), Gemini 3.1 Flash-Lite leads at 1253 vs Grok 4.1 at 1209.
Gemini 3.1 Flash-Lite was released by Google on Mar 3 2026.
Grok 4.1 was released by SpaceXAI on Nov 17 2025.
Only Gemini 3.1 Flash-Lite has a verified first-party API price: $0.25 per million input tokens and $1.50 per million output tokens. No pay-as-you-go API rate is tracked for Grok 4.1. Rates are pay-as-you-go API prices verified on August 18, 2026.