Model Comparison

Gemini 2.5 Flash vs Grok-3 MiniWhich is better in 2026?

Grok-3 Mini significantly outperforms across most benchmarks. Grok-3 Mini is 2.4x cheaper per token.

Verdict: Gemini 2.5 Flash vs Grok-3 Mini — which is better?

Gemini 2.5 Flash (by Google) and Grok-3 Mini (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 2.5 Flash outperforms in 0 benchmarks, while Grok-3 Mini is better at 3 benchmarks (AIME 2024, AIME 2025, GPQA). Grok-3 Mini significantly outperforms across most benchmarks.

On price, Grok-3 Mini is roughly 2.4x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

Gemini 2.5 Flash also accepts a larger context window (1,048,576 input tokens), making it the stronger choice for long documents and large codebases.

Choose Gemini 2.5 Flash if…

  • you process long inputs — it offers a 1,048,576 token context window
  • you want the most recent training data — it shipped May 2025

Choose Grok-3 Mini if…

  • you want the strongest raw capability — it leads on 3 of 3 shared benchmarks
  • cost matters — it's about 2.4x cheaper per token
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Performance Benchmarks

Comparative analysis across standard metrics

3 benchmarks

Gemini 2.5 Flash outperforms in 0 benchmarks, while Grok-3 Mini is better at 3 benchmarks (AIME 2024, AIME 2025, GPQA).

Grok-3 Mini significantly outperforms across most benchmarks.

Thu Jun 25 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

Grok-3 Mini costs less

For input processing, Gemini 2.5 Flash ($0.30/1M tokens) costs the same as Grok-3 Mini ($0.30/1M tokens).

For output processing, Gemini 2.5 Flash ($2.50/1M tokens) is 5.0x more expensive than Grok-3 Mini ($0.50/1M tokens).

In conclusion, Gemini 2.5 Flash is more expensive than Grok-3 Mini.*

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

Lowest available price from all providers
Thu Jun 25 2026 • llm-stats.com
Google
Gemini 2.5 Flash
Input tokens$0.30
Output tokens$2.50
Best providerGoogle
xAI
Grok-3 Mini
Input tokens$0.30
Output tokens$0.50
Best providerxAI
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

Gemini 2.5 Flash accepts 1,048,576 input tokens compared to Grok-3 Mini's 128,000 tokens. Gemini 2.5 Flash can generate longer responses up to 65,536 tokens, while Grok-3 Mini is limited to 8,000 tokens.

Google
Gemini 2.5 Flash
Input1,048,576 tokens
Output65,536 tokens
xAI
Grok-3 Mini
Input128,000 tokens
Output8,000 tokens
Thu Jun 25 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Gemini 2.5 Flash and Grok-3 Mini support multimodal inputs.

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

Gemini 2.5 Flash

Text
Images
Audio
Video

Grok-3 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 2.5 Flash

Proprietary

Closed source

Grok-3 Mini

Proprietary

Closed source

Release Timeline

When each model was launched

Gemini 2.5 Flash was released on 2025-05-20, while Grok-3 Mini was released on 2025-02-17.

Gemini 2.5 Flash is 3 months newer than Grok-3 Mini.

Gemini 2.5 Flash

May 20, 2025

1.1 years ago

3mo newer
Grok-3 Mini

Feb 17, 2025

1.4 years ago

Knowledge Cutoff

When training data ends

Gemini 2.5 Flash has a knowledge cutoff of 2025-01-31, while Grok-3 Mini has a cutoff of 2024-11-17.

Gemini 2.5 Flash has more recent training data (up to 2025-01-31), making it potentially better informed about events through that date compared to Grok-3 Mini (2024-11-17).

Gemini 2.5 Flash

Jan 2025

2 mo newer
Grok-3 Mini

Nov 2024

Provider Availability

Gemini 2.5 Flash is available from Google. Grok-3 Mini is available from xAI.

Gemini 2.5 Flash

google logo
Google
Input Price:Input: $0.30/1MOutput Price:Output: $2.50/1M

Grok-3 Mini

xai logo
xAI
Input Price:Input: $0.30/1MOutput Price:Output: $0.50/1M
* Prices shown are per million tokens

Outputs Comparison

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Key Takeaways

Google
Larger context window (1,048,576 tokens)
xAI
Less expensive output tokens
Higher AIME 2024 score (95.8% vs 88.0%)
Higher AIME 2025 score (90.8% vs 72.0%)
Higher GPQA score (84.0% vs 82.8%)
GoogleGemini 2.5 Flash
xAIGrok-3 Mini
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Detailed Comparison

AI Model Comparison Table
Feature
Google
Gemini 2.5 Flash
xAI
Grok-3 Mini

FAQ

Common questions about Gemini 2.5 Flash vs Grok-3 Mini.

Which is better, Gemini 2.5 Flash or Grok-3 Mini?

Grok-3 Mini significantly outperforms across most benchmarks. Gemini 2.5 Flash is made by Google and Grok-3 Mini is made by xAI. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does Gemini 2.5 Flash compare to Grok-3 Mini in benchmarks?

Gemini 2.5 Flash scores Global-MMLU-Lite: 88.4%, AIME 2024: 88.0%, FACTS Grounding: 85.3%, GPQA: 82.8%, MMMU: 79.7%. Grok-3 Mini scores AIME 2024: 95.8%, AIME 2025: 90.8%, GPQA: 84.0%, LiveCodeBench: 80.4%.

Is Gemini 2.5 Flash cheaper than Grok-3 Mini?

Both models cost $0.30 per million input tokens.

What are the context window sizes for Gemini 2.5 Flash and Grok-3 Mini?

Gemini 2.5 Flash supports 1.0M tokens and Grok-3 Mini supports 128K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Gemini 2.5 Flash and Grok-3 Mini?

Key differences include context window (1.0M vs 128K). See the full comparison above for benchmark-by-benchmark results.

Who makes Gemini 2.5 Flash and Grok-3 Mini?

Gemini 2.5 Flash is developed by Google and Grok-3 Mini is developed by xAI.

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