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Gemini 1.5 Flash vs Grok-2 mini

Gemini 1.5 Flash and Grok-2 mini are closely matched at 6.0 and 8.6 on the LLM Stats Score.

Google · xAI · Updated for 2026

Which is better?

Gemini 1.5 Flash and Grok-2 mini are closely matched on the overall LLM Stats Score at 6.0 and 8.6.

In the 7 individual benchmarks reported for both models, Grok-2 mini wins 6; this is a narrower head-to-head signal than the composite indexes.

Based on current LLM Stats indexes, shared benchmarks, 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 value its reported benchmark strengths — it wins 6 of 7 exact shared results
  • 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
Core performance indexes
LLM Stats Score
6.0
#299
8.6
#283
Reasoning
5.6
#297
8.2
#280
Coding
-0.3
#249
5.9
#200
Cost, coverage & limits
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
—

Capability indexes

Additional strengths measured across groups of related public benchmarks

5 shared
Index
Gemini 1.5 Flash
Grok-2 mini
Math
10.6#252
15.8#213
Vision
5.5#156
5.8#154
Multimodal
9.0#125
9.0#126
Finance
5.7#167
15.7#119
Legal
5.7#154
15.7#102
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

22 reported for Gemini 1.5 Flash · 8 for Grok-2 mini

7 shared

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.

Sat Sep 26 2026 • llm-stats.com

Human preference

Blind head-to-head votes and playground 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
Sat Sep 26 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

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

2.4 years ago

Grok-2 mini

Aug 13, 2024

2.1 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?

Gemini 1.5 Flash and Grok-2 mini are closely matched on the LLM Stats Score at 6.0 and 8.6. 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 capability indexes, individual benchmarks, pricing, and limits 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.

What are the main differences between Gemini 1.5 Flash and Grok-2 mini?

Key differences include LLM Stats Score (6.0 vs 8.6). See the full comparison above for benchmark-by-benchmark results.

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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