GPT-5.3 Chat (latest)
unknownOpenAI · gpt family
Chat-tuned GPT model for conversational assistance, writing, and tool workflows
Limits
Context128,000
InputUnknown
Output16,384
Modalities
Inputtext, image
Outputtext
Release info
Release2026-03-03
Last update2026-03-03
Knowledge cutoff2025-08-31
Provider offerings
Provider-specific prices and limits stay separate from canonical model facts.
| Provider | Provider model ID | Input | Output | Context | Output limit |
|---|---|---|---|---|---|
| Abacus | gpt-5.3-chat-latest | $1.75 / 1M | $14 / 1M | 400,000 | 128,000 |
| OpenAI | gpt-5.3-chat-latest | $1.75 / 1M | $14 / 1M | 128,000 | 16,384 |
| LLM Gateway | gpt-5.3-chat-latest | $1.75 / 1M | $14 / 1M | 128,000 | 16,384 |
| Merge Gateway | openai/gpt-5.3-chat-latest | $1.75 / 1M | $14 / 1M | 128,000 | 16,384 |
| OrcaRouter | openai/gpt-5.3-chat-latest | $1.75 / 1M | $14 / 1M | 128,000 | 16,384 |
Capabilities
Attachments
Yes
Reasoning
No
Tool calling
Yes
Structured output
Yes
Temperature
Yes