UltraGPT
OpenAI: GPT Chat Latest
GPT Chat Latest points to OpenAI's stable API alias `chat-latest` that always resolves to the latest Instant chat model used in ChatGPT. As OpenAI rolls out new Instant model updates...
Intelligence overview
400K tok
Context window
128K tok
Max output
What OpenAI: GPT Chat Latest can do.
Multimodal
Image understanding
Reads and reasons over images alongside text in the same prompt.
File input
Reads uploaded files — documents, spreadsheets, code — directly in context.
Development
Tool calling
Calls external functions mid-response, then continues reasoning from the result.
Structured output
Returns responses constrained to a JSON schema, ready to parse without cleanup.
Streaming
Streams tokens as they're generated instead of waiting on the full response.
Pay for what you use.
Every model in UltraGPT runs behind one flat subscription — this is the underlying per-token cost the catalog tracks.
$5 / 1M tok
$30 / 1M tok
Built for serious work.
Build
Generate and refactor code, with the ability to run and verify tool calls and return structured, parseable output.
Research
Holds up to 400K tokens of source material in context without losing the thread.
Create
Reads images alongside a prompt to ground creative and design work in what's actually on screen.
Ask OpenAI: GPT Chat Latest anything.
A preview of the real UltraGPT composer — the model you see here is the model you get.
Continues in the UltraGPT app — one login, every model.
How OpenAI: GPT Chat Latest stacks up.
The closest models in the catalog by provider, capability and score — real entries, pulled from the same directory.
Technical details.
Specification
- Context window
- 400K tokens
- Max output
- 128K tokens
- Input modalities
- Text + Image + File
- Output modalities
- Text
- Release date
- May 5, 2026
- Streaming
- Supported
- Tool calling
- Supported
- JSON mode
- Supported
More from OpenAI, and everything else.
This model is one entry in the full UltraGPT catalog — browse the rest, compare pricing and context windows, or filter by capability.