Model Comparison

Gemini 2.0 Flash-Lite vs Grok 4 FastWhich is better in 2026?

Grok 4 Fast significantly outperforms across most benchmarks. Gemini 2.0 Flash-Lite is 2.2x cheaper per token.

Verdict: Gemini 2.0 Flash-Lite vs Grok 4 Fast — which is better?

Gemini 2.0 Flash-Lite (by Google) and Grok 4 Fast (by xAI) are two of the AI models people compare most. Here is how they stack up on benchmarks, price and capabilities, and which one to pick in 2026.

Gemini 2.0 Flash-Lite outperforms in 0 benchmarks, while Grok 4 Fast is better at 2 benchmarks (GPQA, SimpleQA). Grok 4 Fast significantly outperforms across most benchmarks.

On price, Gemini 2.0 Flash-Lite is roughly 2.2x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

Grok 4 Fast also accepts a larger context window (2,000,000 input tokens), making it the stronger choice for long documents and large codebases.

Choose Gemini 2.0 Flash-Lite if…

  • cost matters — it's about 2.2x cheaper per token

Choose Grok 4 Fast if…

  • you want the strongest raw capability — it leads on 2 of 2 shared benchmarks
  • you process long inputs — it offers a 2,000,000 token context window
  • you want the most recent training data — it shipped Aug 2025
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Performance Benchmarks

Comparative analysis across standard metrics

2 benchmarks

Gemini 2.0 Flash-Lite outperforms in 0 benchmarks, while Grok 4 Fast is better at 2 benchmarks (GPQA, SimpleQA).

Grok 4 Fast significantly outperforms across most benchmarks.

Mon Jun 15 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

Gemini 2.0 Flash-Lite costs less

For input processing, Gemini 2.0 Flash-Lite ($0.07/1M tokens) is 2.9x cheaper than Grok 4 Fast ($0.20/1M tokens).

For output processing, Gemini 2.0 Flash-Lite ($0.30/1M tokens) is 1.7x cheaper than Grok 4 Fast ($0.50/1M tokens).

In conclusion, Grok 4 Fast is more expensive than Gemini 2.0 Flash-Lite.*

* Using a 3:1 ratio of input to output tokens

Lowest available price from all providers
Mon Jun 15 2026 • llm-stats.com
Google
Gemini 2.0 Flash-Lite
Input tokens$0.07
Output tokens$0.30
Best providerGoogle
xAI
Grok 4 Fast
Input tokens$0.20
Output tokens$0.50
Best providerxAI
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

Grok 4 Fast accepts 2,000,000 input tokens compared to Gemini 2.0 Flash-Lite's 1,048,576 tokens. Grok 4 Fast can generate longer responses up to 30,000 tokens, while Gemini 2.0 Flash-Lite is limited to 8,192 tokens.

Google
Gemini 2.0 Flash-Lite
Input1,048,576 tokens
Output8,192 tokens
xAI
Grok 4 Fast
Input2,000,000 tokens
Output30,000 tokens
Mon Jun 15 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Gemini 2.0 Flash-Lite and Grok 4 Fast support multimodal inputs.

They are both capable of processing various types of data, offering versatility in application.

Gemini 2.0 Flash-Lite

Text
Images
Audio
Video

Grok 4 Fast

Text
Images
Audio
Video

License

Usage and distribution terms

Both models are licensed under proprietary licenses.

Both models have usage restrictions defined by their respective organizations.

Gemini 2.0 Flash-Lite

Proprietary

Closed source

Grok 4 Fast

Proprietary

Closed source

Release Timeline

When each model was launched

Gemini 2.0 Flash-Lite was released on 2025-02-05, while Grok 4 Fast was released on 2025-08-28.

Grok 4 Fast is 7 months newer than Gemini 2.0 Flash-Lite.

Gemini 2.0 Flash-Lite

Feb 5, 2025

1.4 years ago

Grok 4 Fast

Aug 28, 2025

9 months ago

6mo newer

Knowledge Cutoff

When training data ends

Gemini 2.0 Flash-Lite has a documented knowledge cutoff of 2024-06-01, while Grok 4 Fast's cutoff date is not specified.

We can confirm Gemini 2.0 Flash-Lite's training data extends to 2024-06-01, but cannot make a direct comparison without Grok 4 Fast's cutoff date.

Gemini 2.0 Flash-Lite

Jun 2024

Grok 4 Fast

—

Provider Availability

Gemini 2.0 Flash-Lite is available from Google. Grok 4 Fast is available from xAI.

Gemini 2.0 Flash-Lite

google logo
Google
Input Price:Input: $0.07/1MOutput Price:Output: $0.30/1M

Grok 4 Fast

xai logo
xAI
Input Price:Input: $0.20/1MOutput Price:Output: $0.50/1M
* Prices shown are per million tokens

Outputs Comparison

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Key Takeaways

Google
Less expensive input tokens
Less expensive output tokens
xAI
Larger context window (2,000,000 tokens)
Higher GPQA score (85.7% vs 51.5%)
Higher SimpleQA score (95.0% vs 21.7%)

Detailed Comparison

AI Model Comparison Table
Feature
Google
Gemini 2.0 Flash-Lite
xAI
Grok 4 Fast

FAQ

Common questions about Gemini 2.0 Flash-Lite vs Grok 4 Fast.

Which is better, Gemini 2.0 Flash-Lite or Grok 4 Fast?

Grok 4 Fast significantly outperforms across most benchmarks. Gemini 2.0 Flash-Lite is made by Google and Grok 4 Fast is made by xAI. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does Gemini 2.0 Flash-Lite compare to Grok 4 Fast in benchmarks?

Gemini 2.0 Flash-Lite scores MATH: 86.8%, FACTS Grounding: 83.6%, Global-MMLU-Lite: 78.2%, MMLU-Pro: 71.6%, MMMU: 68.0%. Grok 4 Fast scores SimpleQA: 95.0%, HMMT 2025: 93.3%, AIME 2025: 92.0%, GPQA: 85.7%, LiveCodeBench: 80.0%.

Is Gemini 2.0 Flash-Lite cheaper than Grok 4 Fast?

Gemini 2.0 Flash-Lite is 2.9x cheaper for input tokens. Gemini 2.0 Flash-Lite costs $0.07/M input and $0.30/M output via google. Grok 4 Fast costs $0.20/M input and $0.50/M output via xai.

What are the context window sizes for Gemini 2.0 Flash-Lite and Grok 4 Fast?

Gemini 2.0 Flash-Lite supports 1.0M tokens and Grok 4 Fast supports 2.0M tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Gemini 2.0 Flash-Lite and Grok 4 Fast?

Key differences include context window (1.0M vs 2.0M), input pricing ($0.07 vs $0.20/M). See the full comparison above for benchmark-by-benchmark results.

Who makes Gemini 2.0 Flash-Lite and Grok 4 Fast?

Gemini 2.0 Flash-Lite is developed by Google and Grok 4 Fast is developed by xAI.

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