Gemini 2.5 Pro Preview 06-05 vs GPT-4o (Omni)

Compare Gemini 2.5 Pro Preview 06-05 by Google AI against GPT-4o (Omni) by OpenAI, context windows of 1.0M vs 128K, tested across 36 shared challenges. Updated March 2026.

Which is better, Gemini 2.5 Pro Preview 06-05 or GPT-4o (Omni)?

Gemini 2.5 Pro Preview 06-05 and GPT-4o (Omni) are both competitive models. Gemini 2.5 Pro Preview 06-05 costs $1.25/M input tokens vs $2.5/M for GPT-4o (Omni). Context windows: 1049K vs 128K tokens. Compare their real outputs side by side below.

Key Differences Between Gemini 2.5 Pro Preview 06-05 and GPT-4o (Omni)

Gemini 2.5 Pro Preview 06-05 is made by google while GPT-4o (Omni) is from openai. Gemini 2.5 Pro Preview 06-05 has a 1049K token context window compared to GPT-4o (Omni)'s 128K. On pricing, Gemini 2.5 Pro Preview 06-05 costs $1.25/M input tokens vs $2.5/M for GPT-4o (Omni).

Our Verdict
Gemini 2.5 Pro Preview 06-05
Gemini 2.5 Pro Preview 06-05
GPT-4o (Omni)
GPT-4o (Omni)Runner-up

No community votes yet. On paper, Gemini 2.5 Pro Preview 06-05 has the edge — newer, bigger context window.

Too close to call
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