Gemini 3 Flash vs Grok-4 Comparison
Comparing Gemini 3 Flash and Grok-4 across benchmarks, pricing, and capabilities.
Performance Benchmarks
Comparative analysis across standard metrics
Gemini 3 Flash outperforms in 4 benchmarks (AIME 2025, ARC-AGI v2, GPQA, Humanity's Last Exam), while Grok-4 is better at 0 benchmarks.
Gemini 3 Flash significantly outperforms across most benchmarks.
Arena Performance
Human preference votes
Pricing Analysis
Price comparison per million tokens
For input processing, Gemini 3 Flash ($0.50/1M tokens) is 6.0x cheaper than Grok-4 ($3.00/1M tokens).
For output processing, Gemini 3 Flash ($3.00/1M tokens) is 5.0x cheaper than Grok-4 ($15.00/1M tokens).
In conclusion, Grok-4 is more expensive than Gemini 3 Flash.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
Gemini 3 Flash accepts 1,000,000 input tokens compared to Grok-4's 256,000 tokens. Gemini 3 Flash can generate longer responses up to 65,536 tokens, while Grok-4 is limited to 8,000 tokens.
Input Capabilities
Supported data types and modalities
Both Gemini 3 Flash and Grok-4 support multimodal inputs.
They are both capable of processing various types of data, offering versatility in application.
Gemini 3 Flash
Grok-4
License
Usage and distribution terms
Both models are licensed under proprietary licenses.
Both models have usage restrictions defined by their respective organizations.
Proprietary
Closed source
Proprietary
Closed source
Release Timeline
When each model was launched
Gemini 3 Flash was released on 2025-12-17, while Grok-4 was released on 2025-07-09.
Gemini 3 Flash is 5 months newer than Grok-4.
Dec 17, 2025
3 months ago
5mo newerJul 9, 2025
8 months ago
Knowledge Cutoff
When training data ends
Gemini 3 Flash has a knowledge cutoff of 2025-01-31, while Grok-4 has a cutoff of 2024-12-31.
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-4 (2024-12-31).
Jan 2025
1 mo newerDec 2024
Provider Availability
Gemini 3 Flash is available from Google. Grok-4 is available from xAI. The availability of providers can affect quality of the model and reliability.
Gemini 3 Flash
Grok-4
Outputs Comparison
Key Takeaways
Detailed Comparison
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