o3 on Multio

On Multio, o3 is available alongside 100+ other AI models under one account. Switch between models mid-conversation without losing context.

Chat with o3 →

Every major model, one app

o3 specs

Speco3
ProviderOpenAI
Free tierNo
Context window200K tokens
Max output tokens100K tokens
Input modalitiesImage, Text, File
Output modalitiesText
Input price (per 1M tokens)$2.00/M
Output price (per 1M tokens)$8.00/M
  • Reasoning
  • Coding
  • Long context
  • by OpenAI

Use o3 without a separate subscription

One Multio account unlocks o3 by OpenAI alongside every other leading AI model — 100+ total, 10+ free. Switch models mid-conversation without losing context.

Compare GPT-5 vs other AI models

FAQ

Is o3 on Multio free?
Multio's free tier covers 30+ AI models. o3 is available on paid plans with generous included credits.
How does o3 compare to other AI models?
Run o3 alongside GPT-5, Claude, Gemini and other leading models on Multio to see head-to-head responses on your own prompts.
Can I use o3 with my own files?
Yes. Upload PDFs, docs, code, and images — o3 will ground its answers in your files automatically.
Who makes o3?
o3 is built by OpenAI and made available on Multio via OpenRouter routing.