Compare GPT-5.2 Pro by OpenAI against Gemini 2.5 Pro Preview 06-05 by Google AI, context windows of 400K vs 1.0M, tested across 25 shared challenges. Updated April 2026.
GPT-5.2 Pro and Gemini 2.5 Pro Preview 06-05 are both competitive models. GPT-5.2 Pro costs $21/M input tokens vs $1.25/M for Gemini 2.5 Pro Preview 06-05. Context windows: 400K vs 1049K tokens. Compare their real outputs side by side below.
GPT-5.2 Pro is made by openai while Gemini 2.5 Pro Preview 06-05 is from google. GPT-5.2 Pro has a 400K token context window compared to Gemini 2.5 Pro Preview 06-05's 1049K. On pricing, GPT-5.2 Pro costs $21/M input tokens vs $1.25/M for Gemini 2.5 Pro Preview 06-05.
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
Gemini 2.5 Pro Preview 06-05 is 17x cheaper per token — worth considering if cost matters.
Gemini 2.5 Pro Preview 06-05 uses 3.2x more transitions
Ask them anything yourself
Some models write identically. You are paying for the brand.
178 models fingerprinted across 32 writing dimensions. Free research.
185x
price gap between models that write identically
178
models
12
clone pairs
32
dimensions
279 AI models invented the same fake scientist.
We read every word. 250 models. 2.14 million words. This is what we found.

Compare GPT-5.2 Pro by OpenAI against Gemini 2.5 Pro Preview 06-05 by Google AI, context windows of 400K vs 1.0M, tested across 25 shared challenges. Updated April 2026.
GPT-5.2 Pro and Gemini 2.5 Pro Preview 06-05 are both competitive models. GPT-5.2 Pro costs $21/M input tokens vs $1.25/M for Gemini 2.5 Pro Preview 06-05. Context windows: 400K vs 1049K tokens. Compare their real outputs side by side below.
GPT-5.2 Pro is made by openai while Gemini 2.5 Pro Preview 06-05 is from google. GPT-5.2 Pro has a 400K token context window compared to Gemini 2.5 Pro Preview 06-05's 1049K. On pricing, GPT-5.2 Pro costs $21/M input tokens vs $1.25/M for Gemini 2.5 Pro Preview 06-05.
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
Gemini 2.5 Pro Preview 06-05 is 17x cheaper per token — worth considering if cost matters.
Gemini 2.5 Pro Preview 06-05 uses 3.2x more transitions
Ask them anything yourself
Some models write identically. You are paying for the brand.
178 models fingerprinted across 32 writing dimensions. Free research.
185x
price gap between models that write identically
178
models
12
clone pairs
32
dimensions
279 AI models invented the same fake scientist.
We read every word. 250 models. 2.14 million words. This is what we found.

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8+ more head-to-head results. Free. Not a trick.
Free account. No card required. By continuing, you agree to Rival's Terms and Privacy Policy