GPT-5.3 Chat pricing & benchmarks
Released Mar 3, 2026 · served by 2 providers
What GPT-5.3 Chat is
GPT-5.3 Chat is an update to ChatGPT's most-used model that makes everyday conversations smoother, more useful, and more directly helpful. It delivers more accurate answers with better contextualization and significantly...
- Model ID:
openai/gpt-5.3-chat - Modality: text+image+file->text
- Tool calling: supported · Structured output: supported
Providers and prices for GPT-5.3 Chat
The same model costs different amounts depending on who serves it. Prices are per 1M tokens, cheapest first. Uptime and throughput are OpenRouter's rolling measurements, not vendor claims.
| Provider | Input | Output | Context | Quant | Uptime 24h | Throughput |
|---|---|---|---|---|---|---|
| Azurecheapest | $1.75 | $14.00 | 128K | — | — | — |
| OpenAI | $1.75 | $14.00 | 128K | — | 100.0% | — |
FAQ
How much does the GPT-5.3 Chat API cost?
$1.75 per 1M input tokens and $14.00 per 1M output tokens. A typical workload of 1M input + 300K output tokens costs about $5.95.
Is GPT-5.3 Chat free?
No. It is a paid model starting at $1.75 per 1M input tokens, though some providers offer trial credits.
Which provider is cheapest for GPT-5.3 Chat?
Azure at $1.75 input / $14.00 output per 1M tokens.
Can I self-host GPT-5.3 Chat?
No. GPT-5.3 Chat is closed-weight and only available through hosted APIs.