GPT Codex

Part of OpenAI on Models.

OpenAI's line built for coding, named for the Codex CLI.

GPT-5.3 Codex is OpenAI's coding-specialized model, priced below Sol at $1.75 in / $14 out per MTok, with a Fast tier at $3.50/$28 that trades price for speed. TeamCLI's Codex seats run the Sol line today.

What it is good at

  • Coding-specialized, at $1.75 in / $14 out per MTok
  • A priced Fast tier — $3.50/$28 — for steps that need the faster variant

What it is less good at

  • No benchmarks published by OpenAI; no TeamCLI seat has run it yet

Reaching it with TeamCLI

  • Run by the Codex CLI — the same codex transport as the Sol seats, pointed at gpt-5.3-codex.

Versions

One block per version, the current one first, each with its own anchor. The comparison table puts the costs and the family's benchmark columns side by side; the values are verbatim, and every one is sourced and dated in its version's section below and in the Sources list. A dash means the source publishes no figure, and nothing here is estimated.

No independent intelligence or speed index is republished here: Artificial Analysis measures both across labs, and its terms allow the link but not the copy — its figures live on its own pages.

VersionReleasedContextInput priceOutput price
GPT-5.3 Codex — current——$1.75 / MTok$14.00 / MTok

GPT-5.3 Codex — current

  • Model id: gpt-5.3-codex

Abilities

  • Released: —
  • Context window: —
  • Max output: —
  • Output speed: —
  • Latency: —

Costs

Sources

Figures refreshed 2026-10-19; benchmarks are vendor-reported. Prices are per million tokens unless a figure says otherwise.