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Model comparison

o3 vs Gemini 2.5 Pro

Not a benchmark table. This puts pricing, context, interface fit, and key visibility into one decision card.

Provider
OpenAI / Google
global / global
Context
200K / 1M
text+image->text / text+image+file->text
Input price
$10.00 / $1.25
per 1M tokens
Output price
$40.00 / $10.00
per 1M tokens
Left model
o3
OpenAI
Familyo-series
Modalitytext+image->text

复杂推理和工具链场景常用旗舰。

Right model
Gemini 2.5 Pro
Google
FamilyGemini
Modalitytext+image+file->text

企业多模态和搜索增强场景常用型号。

Comparison summary

How to choose first

This is a cross-provider comparison. Start with the job boundary, then verify what your key can actually see.

On the listed price snapshot, Gemini 2.5 Pro is cheaper on combined input and output, but real routing, discounts, and limits still matter.

Gemini 2.5 Pro has the larger context window, which helps with long documents, knowledge bases, logs, and multi-turn workflows.

Decision boundary

Do not start with which model is absolutely stronger. Start with the boundary: cost, context, speed, quality, ecosystem, or supply stability.

  • o3 is worth checking first when the o-series family, 200K context, and text+image->text capability match the job.
  • Gemini 2.5 Pro is worth checking first when the Gemini family, 1M context, and text+image+file->text capability match the job.

Key checking route

If you already hold a key, the valuable check is provider identity, callable models, and whether balance, limits, or subscription status are visible.

  • OpenAI: o3, o-series, text+image->text
  • Google: Gemini 2.5 Pro, Gemini, text+image+file->text

Commercial fit

Commercially, do not look at model names alone. Combine price, limits, region, upstream stability, and ongoing monitoring.

  • o3: 复杂推理和工具链场景常用旗舰。
  • Gemini 2.5 Pro: 企业多模态和搜索增强场景常用型号。