OpenAI: GPT-5.3-Codex
OpenAI: GPT-5.3-Codex offers a 400,000-token context window at $1.75 per 1M input tokens and $14.00 per 1M output tokens. Supported inputs: text, image, file. Data via OpenRouter /models, as of Oct 29, 2026.
Source: OpenRouter /models · as of
OpenRouter model catalogue feed
These are provider-catalog specifications, not a task-quality benchmark. Prices describe the source listing and may vary by provider or routing. Unknown values are shown as — when the feed did not supply that value.
Specifications
| Context window | 400,000 tokens |
|---|---|
| Input price | $1.75 / 1M tokens |
| Output price | $14.00 / 1M tokens |
| Input modalities | text, image, file |
| Output modalities | text |
| Model id | openai/gpt-5.3-codex |
Frequently asked questions
What is the context window of OpenAI: GPT-5.3-Codex?
OpenAI: GPT-5.3-Codex supports up to 400,000 tokens of context.
How much does OpenAI: GPT-5.3-Codex cost?
$1.75 per 1M input tokens and $14.00 per 1M output tokens (via OpenRouter /models, as of Oct 29, 2026).
What input types does OpenAI: GPT-5.3-Codex support?
OpenAI: GPT-5.3-Codex accepts text, image, file.
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