Gemini 1.5 Flash 8B vs Grok Code Fast 1
Comparing Gemini 1.5 Flash 8B and Grok Code Fast 1 across benchmarks, pricing, and capabilities.
Google · xAI · Updated for 2026
Which is better?
Gemini 1.5 Flash 8B and Grok Code Fast 1 trade strengths across price, capabilities, and technical limits. The better choice depends on the workload.
On price, Gemini 1.5 Flash 8B is roughly 4.1x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.
Gemini 1.5 Flash 8B also accepts a larger context window (1,048,576 input tokens), making it the stronger choice for long documents and large codebases.
Based on current benchmark, pricing, and model metadata for 2026.
Choose Gemini 1.5 Flash 8B
- cost matters — it's about 4.1x cheaper per token
- you process long inputs — it offers a 1,048,576 token context window
Choose Grok Code Fast 1
- you want the most recent training data — it shipped Aug 2025
At a glance
The differences that matter most.
Performance Benchmarks
Comparative analysis across standard metrics
Gemini 1.5 Flash 8B and Grok Code Fast 1don't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.
Arena Performance
Playground indexes and blind preference scores
Pricing Analysis
Price comparison per million tokens
For input processing, Gemini 1.5 Flash 8B ($0.07/1M tokens) is 2.9x cheaper than Grok Code Fast 1 ($0.20/1M tokens).
For output processing, Gemini 1.5 Flash 8B ($0.30/1M tokens) is 5.0x cheaper than Grok Code Fast 1 ($1.50/1M tokens).
In conclusion, Grok Code Fast 1 is more expensive than Gemini 1.5 Flash 8B.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
Gemini 1.5 Flash 8B accepts 1,048,576 input tokens compared to Grok Code Fast 1's 256,000 tokens. Grok Code Fast 1 can generate longer responses up to 10,000 tokens, while Gemini 1.5 Flash 8B is limited to 8,192 tokens.
Input Capabilities
Supported data types and modalities
Gemini 1.5 Flash 8B supports multimodal inputs, whereas Grok Code Fast 1 does not.
Gemini 1.5 Flash 8B can handle both text and other forms of data like images, making it suitable for multimodal applications.
Gemini 1.5 Flash 8B
Grok Code Fast 1
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 1.5 Flash 8B was released on 2024-03-15, while Grok Code Fast 1 was released on 2025-08-28.
Grok Code Fast 1 is 18 months newer than Gemini 1.5 Flash 8B.
Mar 15, 2024
2.4 years ago
Aug 28, 2025
12 months ago
1.5yr newerKnowledge Cutoff
When training data ends
Gemini 1.5 Flash 8B has a documented knowledge cutoff of 2024-10-01, while Grok Code Fast 1's cutoff date is not specified.
We can confirm Gemini 1.5 Flash 8B's training data extends to 2024-10-01, but cannot make a direct comparison without Grok Code Fast 1's cutoff date.
Oct 2024
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Provider Availability
Gemini 1.5 Flash 8B is available from Google. Grok Code Fast 1 is available from xAI.
Gemini 1.5 Flash 8B
Grok Code Fast 1
Outputs Comparison
Judge for yourself.
Run your own prompts against Gemini 1.5 Flash 8B and Grok Code Fast 1 side-by-side, then vote on the output you prefer.
FAQ
Common questions about Gemini 1.5 Flash 8B vs Grok Code Fast 1.