GPT-5 on Multio

GPT-5 is OpenAI's flagship reasoning model — the strongest all-rounder for complex multi-step tasks, code, and grounded answers. On Multio it sits in the same chat surface as Claude, Gemini and Grok, so you can swap mid-thread when one model's answer needs a second opinion.

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GPT-5 specs

SpecGPT-5
ProviderOpenAI
Free tierNo
Context window400K tokens
Max output tokens128K tokens
Input modalitiesText, Image, File
Output modalitiesText
Input price (per 1M tokens)$1.25/M
Output price (per 1M tokens)$10.00/M
  • Vision
  • Reasoning
  • Coding
  • Long context
  • by OpenAI

What GPT-5 is good at

  • Multi-step reasoning where the answer depends on chaining facts and constraints
  • Long-form code generation with implicit-spec inference
  • Tool-use orchestration when the task spans search, files and code execution
  • Following intricate system prompts without drifting on tone
  • Math and symbolic problems where intermediate steps matter more than the final number

Best Multio use cases for GPT-5

The short version

The default first model to try on hard tasks. Switch only when you have a specific reason.

Compare GPT-5 vs other AI models

FAQ

Is GPT-5 on Multio free?
GPT-5 is a premium model and is BYOK on Multio. Add your OpenAI API key in /settings/api-keys, and your provider bills you directly for usage. Free models (Llama, DeepSeek, Mistral, Qwen) ship on the workspace tier.
How does GPT-5 compare to other AI models?
Run GPT-5 alongside GPT-5, Claude, Gemini and other leading models on Multio to see head-to-head responses on your own prompts.
When should I use a different model instead of GPT-5?
Switch to Claude Opus when you want a more conservative take, or to Gemini when the task needs vision-heavy multimodal grounding.
Can I use GPT-5 with my own files?
Yes. Upload PDFs, docs, code, and images — GPT-5 will ground its answers in your files automatically.
Who makes GPT-5?
GPT-5 is built by OpenAI and is available inside Multio's agent platform on supported plans.