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  1. Home
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Gemini 3 Flash Preview vs Grok 4.1 Fast

Compare Gemini 3 Flash Preview from Google and Grok 4.1 Fast from SpaceXAI on key metrics including benchmarks, price, context length, and other model features. Access both models and hundreds of others through the OpenRouter API.

Favicon for google
Gemini 3 Flash Preview
Favicon for x-ai
Grok 4.1 Fast
Favicon for google
Gemini 3 Flash Preview
Favicon for x-ai
Grok 4.1 Fast

Overview

Gemini 3 Flash Preview
Author
Google
Grok 4.1 Fast
Author
SpaceXAI
Gemini 3 Flash Preview
Context length
1.05Mtokens
Grok 4.1 Fast
Context length
2Mtokens
Gemini 3 Flash Preview
Reasoning
Grok 4.1 Fast
Reasoning
Gemini 3 Flash Preview
Input modalities
Grok 4.1 Fast
Input modalities
Gemini 3 Flash Preview
Output modalities
Grok 4.1 Fast
Output modalities

Gemini 3 Flash Preview vs Grok 4.1 Fast: side-by-side summary

Gemini 3 Flash Preview and Grok 4.1 Fast are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.

Gemini 3 Flash Preview, from Google, has a 1,048,576-token context window and is priced at $0.50/M tokens input, $3/M tokens output on OpenRouter.

Grok 4.1 Fast, from SpaceXAI, has a 2,000,000-token context window and is priced by the provider serving it on OpenRouter.

Context window
  • Gemini 3 Flash Preview: 1,048,576 tokens
  • Grok 4.1 Fast: 2,000,000 tokens
Price
  • Gemini 3 Flash Preview: $0.50/M tokens input, $3/M tokens output
  • Grok 4.1 Fast: Pricing varies by provider
Provided by
  • Gemini 3 Flash Preview: Google
  • Grok 4.1 Fast: SpaceXAI
  • model details, providers and pricing
Gemini 3 Flash Preview
model details, providers and pricing
Grok 4.1 Fast

Gemini 3 Flash Preview vs Grok 4.1 Fast at a glance

Gemini 3 Flash Preview vs Grok 4.1 Fast comparison
Gemini 3 Flash PreviewGrok 4.1 Fast
Input price$0.50/M tokensPricing varies by provider
Output price$3/M tokensPricing varies by provider
Context window1,048,576 tokens2,000,000 tokens
Intelligence Index26.320.4
Coding IndexNot availableNot available
Agentic IndexNot availableNot available
Latency (p50)1.47 sNot available
Throughput (p50)87.0 tok/sNot available

Oct 5, 2026

Which has the longer context window, Gemini 3 Flash Preview or Grok 4.1 Fast?

Grok 4.1 Fast has the longer context window at 2,000,000 tokens, compared with 1,048,576 tokens for Gemini 3 Flash Preview.

Attribute
Benchmark data updated
Frequently asked questions