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Google Gemini 2.5 Pro VS xAI Grok 4.5

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

👑Our Take

These models use different coding benchmarks — with Gemini 2.5 Pro evaluated on swe-bench-verified (good at editing existing code, cross-file updates, and multi-component systems) and Grok 4.5 on swe-bench-pro (excellent at multi-file repositories, autonomous agents, and industrial codebases) — but Grok 4.5 holds a clear reasoning advantage (+8.6% on GPQA Diamond) while being cheaper or equal in cost to Gemini 2.5 Pro. We recommend going with Grok 4.5 for superior overall value and reasoning capabilities.
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Model Specs

Gemini 2.5 Pro

Benchmarks & Scores

Coding (swe-bench-verified)
59.6%

good at editing existing code, cross-file updates, and multi-component systems

Reasoning (gpqa-diamond)
84.4%

graduate-level science QA

Cost & Performance

Cost (per 1M tokens)
$3.44Input: $1.25 | Output: $10.00
Context WindowLarger
1.05M tokens
Model Specs

Grok 4.5

Benchmarks & Scores

Coding (swe-bench-pro)
64.7%

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

Reasoning (gpqa-diamond)Winner (+8.6%)
93%

graduate-level science QA

Cost & Performance

Cost (per 1M tokens)1.1x cheaper
$3.00Input: $2.00 | Output: $6.00
Context Window
500k tokens

Frequently Asked Questions about Gemini 2.5 Pro vs Grok 4.5 comparison

Grok 4.5 is cheaper than Gemini 2.5 Pro. Grok 4.5 has a blended cost of $3.00/1M tokens, which is about 1.1x cheaper than Gemini 2.5 Pro at $3.44/1M tokens.

For coding tasks, Gemini 2.5 Pro scores 59.6% on swe-bench-verified (good at editing existing code, cross-file updates, and multi-component systems), while Grok 4.5 scores 64.7% on swe-bench-pro (excellent at multi-file repositories, autonomous agents, and industrial codebases).