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Gemini 2.5 Pro (05-06) vs Grok 4.5

At a glance
GoogleGemini 2.5 Pro (05-06)

Earlier Gemini 2.5 Pro preview release from May 2025.

751.0M ctx$1.25/$10.00 per M#41/92
xAIGrok 4.5

xAI's Opus-class flagship for frontier coding, agentic tool use, and knowledge work.

89500K ctx$2.00/$6.00 per M#6/92
AI Output
All AI outputs

No captured outputs for these models yet.

Benchmarks
See rankings
GoogleGemini 2.5 Pro (05-06)
Reasoning
CodingInsufficient data
AgenticInsufficient data
MathInsufficient data
Sources:Epoch ECI·Epoch AI·OpenRouter· as of 2026-07-10
Capability
CapabilityECI75.3
Reasoning & Knowledge
Graduate Science66.7%Expert-Level17.8%Factual Recall—
Math
Math Problems95.9%Competition Math—
Coding
Code Editing76.9%
Agentic
Terminal Tasks—
xAIGrok 4.5
Reasoning
CI 86.2-90.3
CodingInsufficient data
Sources:Epoch ECI·Epoch AI·Provider·OpenRouter· as of 2026-07-10
SmarterCheaper
Capability
CapabilityECI88.5
Reasoning & Knowledge
Graduate Science93.4%Expert-Level—Factual Recall53.5%
Math
Math Problems—Competition Math97.8%
Coding
Code Editing—
Agentic
Terminal Tasks83.3%
Specs
GoogleGemini 2.5 Pro (05-06)
1.0M
Context
66K
Max output
May 2025
Released
xAIGrok 4.5
500K
Context
16K
Max output
Jul 2026
Released
Capabilities
GoogleGemini 2.5 Pro (05-06)
Vision
Audio
Reasoning
xAIGrok 4.5
Vision
Audio
Reasoning
Pricing
GoogleGemini 2.5 Pro (05-06)
Live pricing, shown before you run
Input$1.25/M tokens
Output$10.00/M tokens
Reasoning$10.00/M tokens
Cache read$0.13/M tokens
Cache write$0.38/M tokens
Image input$1.25/M tokens
Audio input$1.25/M tokens
Web search$0.01/search
xAIGrok 4.5
Live pricing, shown before you run
Input$2.00/M tokens
Output$6.00/M tokens
Cache read$0.50/M tokens
Web search$0.005/search
Chat with Gemini 2.5 Pro (05-06)Go to model
Chat with Grok 4.5Go to model
Frequently Asked Questions: Gemini 2.5 Pro (05-06) vs Grok 4.5▼

Which is better, Gemini 2.5 Pro (05-06) or Grok 4.5?

▼

Based on the Capability Index, Grok 4.5 scores higher (88.5 vs 75.3). However, "better" depends on your use case — pricing, speed, context window, and specific capability needs all matter.

Which is cheaper, Gemini 2.5 Pro (05-06) or Grok 4.5?

▼

Grok 4.5 has a lower blended cost. Gemini 2.5 Pro (05-06): $1.25 input / $10.00 output. Grok 4.5: $2.00 input / $6.00 output.

Which has a larger context window, Gemini 2.5 Pro (05-06) or Grok 4.5?

▼

Gemini 2.5 Pro (05-06) has a larger context window: Gemini 2.5 Pro (05-06) supports 1M tokens vs Grok 4.5 at 500K tokens.

Do both Gemini 2.5 Pro (05-06) and Grok 4.5 support vision?

▼

Yes, both Gemini 2.5 Pro (05-06) and Grok 4.5 support vision/image input.

What are the key differences between Gemini 2.5 Pro (05-06) and Grok 4.5?

▼

Key differences: Grok 4.5 has a notably higher capability index (13.2 point gap). Compare full specs on this page.

Which model should I choose for my use case?

▼

If cost is your priority, choose the cheaper option. If you need the highest intelligence for complex tasks, pick the higher-scoring model. For long documents or codebases, choose the larger context window. You can try both Gemini 2.5 Pro (05-06) and Grok 4.5 for free on idapt.app to see which performs better for your specific needs.

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