gpt-5.3-instant

chatgpt · Responses model

gpt-5.3-instant is listed here as a responses model from chatgpt. This page shows simple API pricing, token limits, and capability flags so you can compare it with similar options.

Provider and model identifiers are kept in their original form for accuracy.

chatgpt-chatgpt-gpt-5-3-instant

Input

N/A

Output

N/A

Cached input

N/A

Context window

64.0K

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Quick read

Best for

Use this page when you need a fast view of cost, context size, and supported features before testing the model in your own workload.

Things to verify

Always check the provider page for discounts, cache pricing, region rules, and any model limits that may not appear in public metadata.

Pricing

No matching data

Limits

Context window

64.0K

Max input tokens

128.0K

Max output tokens

64.0K

Max tokens

64.0K

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Capabilities

Capability	Supported
Vision	Supported
Function calling	Supported
Parallel function calling	Supported
Tool choice	-
Prompt caching	-
Reasoning	-
Response schema	Supported
System messages	-
Audio input	-
Audio output	-
Web search	-
PDF input	-
Video input	-

Sources

Source links	LiteLLM repository LiteLLM model cost map
Pricing data	LiteLLM model cost map
Synced at	2026-05-28
Catalog generated	2026-07-07T08:19:07.388Z