AI Flash Report

GPT-5.3 Codex API price history

GPT-5.3 Codex (OpenAI) currently costs $1.25 per million input tokens and $10.00 per million output tokens. Its price book last changed on 2026-05-11. Confirmed unchanged as of 2026-06-15.

Price timeline

$0 $2.75 $5.50 $8.25 $11.00 2026-04-12 2026-06-15 Input: $1.25/Mtok observed 2026-04-12 Input: $1.25/Mtok observed 2026-05-11 Output: $10.00/Mtok observed 2026-04-12 Output: $10.00/Mtok observed 2026-05-11 Input / Mtok Output / Mtok

Every observed price point

GPT-5.3 Codex dated API price observations
Observed Input / Mtok Output / Mtok Cache read / Mtok Source
$1.25 $10.00 — archive backfill
$1.25 $10.00 $0.17 archive backfill

Dates are when our snapshot observed the price, not necessarily the vendor's announcement date. Prices from each lab's official pricing page, per million tokens.

Full GPT-5.3 Codex model profile →