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
| Spec | GPT-5 |
|---|---|
| Provider | OpenAI |
| Free tier | No |
| Context window | 400K tokens |
| Max output tokens | 128K tokens |
| Input modalities | Text, Image, File |
| Output modalities | Text |
| 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.