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GoogleGemini 3.6 FlashVSxAIGrok 4.5

Analysis by:the whichllmmodel Editorial Team|Updated: June 2026

Our Take

Grok 4.5 is the superior choice here. It holds a 3.0% average lead in benchmarks while actually being more cost-effective (saving 1.0x on API costs compared to Gemini 3.6 Flash). Unless you have specific provider lock-in, go with Grok 4.5.
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Model Specs

Gemini 3.6 Flash

Benchmarks & Scores

Coding (swe-bench-pro)
58.7%

excellent at multi-file repositories, autonomous agents, and industrial codebases

Reasoning (gpqa-diamond)
93%

graduate-level science QA

Cost & Context

Cost (per 1M tokens)
$3.00Input: $1.50 | Output: $7.50
Context WindowLarger
1.05M tokens
Model Specs

Grok 4.5

Benchmarks & Scores

Coding (swe-bench-pro)Winner (+6.0%)
64.7%

excellent at multi-file repositories, autonomous agents, and industrial codebases

Reasoning (gpqa-diamond)
93%

graduate-level science QA

Cost & Context

Cost (per 1M tokens)
$3.00Input: $2.00 | Output: $6.00
Context Window
500k tokens

Frequently Asked Questions about Gemini 3.6 Flash vs Grok 4.5

Both Gemini 3.6 Flash and Grok 4.5 cost the same, with a blended cost of $3.00 per 1 million tokens.

Grok 4.5 is better for coding tasks on this benchmark. It scores 64.7% on swe-bench-pro (excellent at multi-file repositories, autonomous agents, and industrial codebases) compared to Gemini 3.6 Flash which scores 58.7%.

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