Grok-3 vs Gemini 3 Flash Comparison

Comparing Grok-3 and Gemini 3 Flash across benchmarks, pricing, and capabilities.

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Performance Benchmarks

Comparative analysis across standard metrics

2 benchmarks

Grok-3 outperforms in 0 benchmarks, while Gemini 3 Flash is better at 2 benchmarks (AIME 2025, GPQA).

Gemini 3 Flash significantly outperforms across most benchmarks.

Sat Mar 14 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

Gemini 3 Flash costs less

For input processing, Grok-3 ($3.00/1M tokens) is 6.0x more expensive than Gemini 3 Flash ($0.50/1M tokens).

For output processing, Grok-3 ($15.00/1M tokens) is 5.0x more expensive than Gemini 3 Flash ($3.00/1M tokens).

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

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

Lowest available price from all providers

Sat Mar 14 2026 • llm-stats.com

Grok-3

Input tokens$3.00

Output tokens$15.00

Best providerxAI

Gemini 3 Flash

Input tokens$0.50

Output tokens$3.00

Best providerGoogle

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Context Window

Maximum input and output token capacity

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

Grok-3

Input128,000 tokens

Output8,000 tokens

Gemini 3 Flash

Input1,000,000 tokens

Output65,536 tokens

Sat Mar 14 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

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

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

Grok-3

Text

Images

Audio

Video

Gemini 3 Flash

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.

Grok-3

Proprietary

Closed source

Gemini 3 Flash

Proprietary

Closed source

Release Timeline

When each model was launched

Grok-3 was released on 2025-02-17, while Gemini 3 Flash was released on 2025-12-17.

Gemini 3 Flash is 10 months newer than Grok-3.

Grok-3

Feb 17, 2025

1.1 years ago

Gemini 3 Flash

Dec 17, 2025

2 months ago

10mo newer

Knowledge Cutoff

When training data ends

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

Gemini 3 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 (2024-11-17).

Grok-3

Nov 2024

Gemini 3 Flash

Jan 2025

2 mo newer