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Gemini 1.5 Flash vs Grok-2 mini

Grok-2 mini shows notably better performance in the majority of benchmarks.

Google · xAI · Updated for 2026

Which is better?

Gemini 1.5 Flash outperforms in 1 benchmarks (MATH), while Grok-2 mini is better at 5 benchmarks (HumanEval, MathVista, MMLU, MMLU-Pro, MMMU). Grok-2 mini shows notably better performance in the majority of benchmarks.

Based on current benchmark, pricing, and model metadata for 2026.

Choose Gemini 1.5 Flash

  • you want predictable pricing at $0.15/M input and $0.60/M output

Choose Grok-2 mini

  • you want the strongest raw capability — it leads on 6 of 7 shared benchmarks
  • you want the most recent training data — it shipped Aug 2024

At a glance

The differences that matter most.

Gemini 1.5 Flash
Google
Grok-2 mini
xAI
Benchmark wins
1 of 7
6 of 7
Input price
$0.15 / M
— / M
Output price
$0.60 / M
— / M
Context window
1,048,576
—
Released
May 2024
Aug 2024
License
Proprietary
Proprietary

Performance Benchmarks

Comparative analysis across standard metrics

7 benchmarks

Gemini 1.5 Flash outperforms in 1 benchmarks (MATH), while Grok-2 mini is better at 5 benchmarks (HumanEval, MathVista, MMLU, MMLU-Pro, MMMU).

Grok-2 mini shows notably better performance in the majority of benchmarks.

Thu Aug 27 2026 • llm-stats.com

Arena Performance

Playground indexes and blind preference scores

Context Window

Maximum input and output token capacity

Only Gemini 1.5 Flash specifies input context (1,048,576 tokens). Only Gemini 1.5 Flash specifies output context (8,192 tokens).

Google
Gemini 1.5 Flash
Input1,048,576 tokens
Output8,192 tokens
xAI
Grok-2 mini
Input- tokens
Output- tokens
Thu Aug 27 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Gemini 1.5 Flash and Grok-2 mini support multimodal inputs.

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

Gemini 1.5 Flash

Text
Images
Audio
Video

Grok-2 mini

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 1.5 Flash

Proprietary

Closed source

Grok-2 mini

Proprietary

Closed source

Release Timeline

When each model was launched

Gemini 1.5 Flash was released on 2024-05-01, while Grok-2 mini was released on 2024-08-13.

Grok-2 mini is 3 months newer than Gemini 1.5 Flash.

Gemini 1.5 Flash

May 1, 2024

2.3 years ago

Grok-2 mini

Aug 13, 2024

2.0 years ago

3mo newer

Knowledge Cutoff

When training data ends

Gemini 1.5 Flash has a documented knowledge cutoff of 2023-11-01, while Grok-2 mini's cutoff date is not specified.

We can confirm Gemini 1.5 Flash's training data extends to 2023-11-01, but cannot make a direct comparison without Grok-2 mini's cutoff date.

Gemini 1.5 Flash

Nov 2023

Grok-2 mini

—

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Judge for yourself.

Run your own prompts against Gemini 1.5 Flash and Grok-2 mini side-by-side, then vote on the output you prefer.

Gemini 1.5 Flash
✓ Preferred
Grok-2 mini
Open in Playground

FAQ

Common questions about Gemini 1.5 Flash vs Grok-2 mini.

Which is better, Gemini 1.5 Flash or Grok-2 mini?

Grok-2 mini shows notably better performance in the majority of benchmarks. Gemini 1.5 Flash is made by Google and Grok-2 mini is made by xAI. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does Gemini 1.5 Flash compare to Grok-2 mini in benchmarks?

Gemini 1.5 Flash scores XSTest: 97.0%, FLEURS: 90.4%, HellaSwag: 86.5%, GSM8k: 86.2%, BIG-Bench Hard: 85.5%. Grok-2 mini scores DocVQA: 93.2%, MMLU: 86.2%, HumanEval: 85.7%, MATH: 73.0%, MMLU-Pro: 72.0%.

What are the context window sizes for Gemini 1.5 Flash and Grok-2 mini?

Gemini 1.5 Flash supports 1.0M tokens and Grok-2 mini supports an unknown number of tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

Who makes Gemini 1.5 Flash and Grok-2 mini?

Gemini 1.5 Flash is developed by Google and Grok-2 mini is developed by xAI.

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