gpt-5.3-codex pricing
GPT-5.3-Codex is OpenAI’s most advanced agentic coding model, combining the frontier software engineering performance of GPT-5.2-Codex with the broader reasoning and professional knowledge capabilities of GPT-5.2. gpt-5.3-codex from OpenAI costs $1.75 per 1M input tokens and $14.00 per 1M output tokens. Cached input is $0.175 per 1M. Context window 400,000 tokens.
API id gpt-5.3-codex · OpenAI · source · updated 2026-09-25 · general-purpose
$1.75
Input / 1M tokens
$14.00
Output / 1M tokens
$0.175
Cached input / 1M
400K
Context window
gpt-5.3-codex specifications
- Provider
- OpenAI
- API id
gpt-5.3-codex- Model type
- general-purpose
- Context window
- 400K tokens
- Max output
- 128K tokens
- Currency
- USD
- Price source
- First-party
- Last checked
- 2026-09-25
Tags
- flagship
gpt-5.3-codex across providers
The same model, priced by every seller we track. Ranked by the cost of 1M input + 1M output tokens, standard tier; savings measured against buying from the vendor directly.
| Provider | Input /1M | Cached /1M | Output /1M | 1M in + 1M out | vs vendor |
|---|---|---|---|---|---|
| $1.75 | $0.175 | $14.00 | $15.75 | — | |
OpenRouterHost | $1.75 | $0.175 | $14.00 | $15.75 | — |
What gpt-5.3-codex costs in practice
| Workload | Input tokens | Output tokens | Estimated cost |
|---|---|---|---|
| Short chat turn | 1,000 | 500 | $0.0088 |
| Document summary | 50,000 | 2,000 | $0.12 |
| 1M tokens in, 200K out | 1,000,000 | 200,000 | $4.55 |
Estimates use the standard tier and ignore caching discounts, so real bills with repeated prompt prefixes are typically lower.
Common questions
- How much does gpt-5.3-codex cost per 1M tokens?
- gpt-5.3-codex costs $1.75 per 1M input tokens and $14.00 per 1M output tokens on the standard tier. Cached input is $0.175 per 1M.
- What is gpt-5.3-codex's context window?
- gpt-5.3-codex accepts up to 400,000 tokens in a single request, and can return up to 128,000 output tokens.
- Is there a cheaper OpenAI model than gpt-5.3-codex?
- Yes. omni-moderation-latest is free per 1M input tokens versus $1.75 for gpt-5.3-codex.
- Where does this gpt-5.3-codex price come from?
- Directly from OpenAI's published pricing page, re-read every day and normalized to USD per 1,000,000 tokens.