This model was retired on 2026-06-29. The pricing below is the last-known rate, kept for migration reference.

GPT 5.3 ChatDeprecated

OpenAI
VisionTool useReasoningPrompt cachingStructured output
Context
128K
Max output
16K
Serving providers
2
Cheapest input
$1.75 /1M
Prices are on-demand list rates. Enterprise commitments (committed-use discounts, provisioned throughput, negotiated rates) can be materially lower.

Pricing by serving provider

last-known · per 1M tokens · click a provider to expand
Serving providerInput /1MOutput /1MEndpoints
Azure$1.75$14.001
OpenRouter$1.75$14.001

Price history

input + output $/1M since we started tracking
Input Output
$0.000$5.00$10.00$15.00Mar 10Jun 22Jul 19$14.00$1.75

Cost calculator

estimate your monthly spend on this model
$1,470
estimated / month

Model IDs

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azure/gpt-5.3-chatopenai/gpt-5.3-chat

Frequently asked questions

GPT 5.3 Chat pricing, context and availability

Is GPT 5.3 Chat still available?

GPT 5.3 Chat was retired on 2026-06-29. The pricing on this page is the last-known rate, kept for migration reference.

How much did GPT 5.3 Chat cost?

GPT 5.3 Chat's last-known pricing, before it was retired on 2026-06-29, was $1.75 per 1M input tokens and $14.00 per 1M output tokens.

What was the context window of GPT 5.3 Chat?

GPT 5.3 Chat had a 128K token context window and could return up to 16K output tokens.

What could GPT 5.3 Chat do?

GPT 5.3 Chat supported image input (vision), tool use, reasoning, prompt caching and structured output.

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