Skip to content
SF·SIX
SF·SIX / MODEL PROFILE

OpenAI GPT-5.3-Codex

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. It achieves state-of-the-art results...

OpenAI GPT-5.3-Codex costs $1.75 per 1M input tokens and $14.00 per 1M output tokens at the standard tier, the lowest default-region price among the 2 providers SF·SIX tracks, from OpenAI. Cached input reads cost $0.175 per 1M tokens. Updated ; prices checked .

Checked · Source: OpenRouter · Methodology

Developer
OpenAI
Input modalities
text, image, file
Output modalities
text
Context tokens
400,000
Latest price observation
2026-10-17
Lowest paired standard token quote
$1.75 input / $14.00 output per 1M tokens

Dated price and provider records

Dated price and provider records
Provider and channelInputOutput or native rateUnit and statusSource and observation
AzureOpenRouter$1.75$14.001M tokenspriced · USDOpenRouter2026-10-17
OpenAIOpenRouter$1.75$14.001M tokenspriced · USDOpenRouter2026-10-17
OpenAIOpenRouter · Fast tier$3.50$28.001M tokenspriced · USDOpenRouter2026-10-17

These are dated, non-executable observations. Verify the exact endpoint, price and terms with the source before use. Unknown values are not free.

Compare AI API prices · All OpenAI API prices · Recent price changes · Estimate your monthly cost