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GPT-5.3-Codex vs GPT-5.5
GPT-5.3-Codex and GPT-5.5: current price, context, max output, and supported operations.
Pricing comparison
| GPT-5.3-Codex | GPT-5.5 | |
|---|---|---|
| Model maker | OpenAI | OpenAI |
| Delivery availability | Available | Available |
| Context window | 400K | 1.05M |
| Max output | 128K | 128K |
| Official price | Input$1.75per 1M tokensOutput$14.00per 1M tokens | Input$5.00per 1M tokensOutput$30.00per 1M tokens |
| Verified price | Input$1.23per 1M tokensOutput$9.80per 1M tokens | Input$3.50per 1M tokensOutput$21.00per 1M tokens |
| Model performance | Collecting data |
|
| Capabilities | JSON modePrompt CacheTool useVision | CodeJSON modePrompt CacheReasoningTool useVision |
Summary
- GPT-5.3-Codex: Input $1.23 / Output $9.80 per 1M tokens; GPT-5.5: Input $3.50 / Output $21.00 per 1M tokens. Rates depend on the billing unit, specification, and usage. Compare matching conditions in the model's detailed pricing; a single rate does not determine the total cost.
- GPT-5.5 has a 2.6x larger context window
FAQ
Which is cheaper, GPT-5.3-Codex or GPT-5.5?
GPT-5.3-Codex: Input $1.23 / Output $9.80 per 1M tokens; GPT-5.5: Input $3.50 / Output $21.00 per 1M tokens. Rates depend on the billing unit, specification, and usage. Compare matching conditions in the model's detailed pricing; a single rate does not determine the total cost.
What are the key differences between GPT-5.3-Codex and GPT-5.5?
GPT-5.5: Code, Reasoning