OpenAI

GPT 5.3 Codex

Type
image generation
Context
400K tokens
Max output
128K
Released
10 February 2026
Knowledge cutoff
August 2025
API string
openai/gpt-5.3-codex

Prices by provider

Provider Input, $ per 1M Output, $ per 1M In our data since
Poe $1.6 $13 31 Jul 2026
vivgrid $1.75 $14 31 Jul 2026
neon $1.75 $14 31 Jul 2026
frogbot $1.75 $14 31 Jul 2026
freemodel $1.75 $14 31 Jul 2026
AIHubMix $1.75 $14 31 Jul 2026
Abacus.AI $1.75 $14 31 Jul 2026
Azure Cognitive Services $1.75 $14 31 Jul 2026
Cloudflare AI Gateway $1.75 $14 31 Jul 2026
DigitalOcean Gradient AI $1.75 $14 1 Aug 2026
FastRouter $1.75 $14 31 Jul 2026
GitHub Copilot $1.75 $14 31 Jul 2026
Kilo Code $1.75 $14 31 Jul 2026
LLM Gateway $1.75 $14 31 Jul 2026
Microsoft Foundry $1.75 $14 31 Jul 2026
NanoGPT $1.75 $14 31 Jul 2026
OpenAI $1.75 $14 31 Jul 2026
OpenCode Zen $1.75 $14 31 Jul 2026
OpenRouter $1.75 $14 31 Jul 2026
OrcaRouter $1.75 $14 31 Jul 2026
Pioneer $1.75 $14 31 Jul 2026
Requesty $1.75 $14 31 Jul 2026
Vercel $1.75 $14 31 Jul 2026
ZenMux $1.75 $14 31 Jul 2026

Only the base tier and only per-token prices are shown. Batch, discounted and cached rates, as well as prices per image or per second of video, do not go into this table: they cannot stand in the same column as a price per million tokens.

The date in the last column is the day this price first entered our collection. The price may well be older: before that day we simply were not recording it. It has not changed since — otherwise a new row with a new date would stand in its place.

Measurement results

Task set Result Run conditions Measured by
Arena Score, web development 1,408.9 1,395–1,423
WeirdML — unusual machine learning tasks 79.3 % WeirdML Leaderboard
Terminal-Bench — working in the command line 78.4 % · with a tuned harness https://www.tbench.ai/leaderboard/terminal-bench/2.0
SWE-bench Verified — fixing bugs in repositories 74.79 % effort: high · with a tuned harness Epoch evaluations
APEX-Agents 31.8 %