Model dossier

OpenAI: GPT-5.4

GPT-5.4 is OpenAI’s latest frontier model, unifying the Codex and GPT lines into a single system. It features a 1M+ token context window (922K input, 128K output) with support for...

ProviderOpenAI Start comparison

Context1,050,000

Max output128,000

Pricing viewTVP price

Identity

OpenAI: GPT-5.4

Model ID: openai/gpt-5.4
Canonical slug: openai/gpt-5.4-20260305
Knowledge cutoff: n/a
Created: 3/5/2026

Capabilities

textimagefiletoolsstructured

Modalities

text+image+file->texttextimagefile

Capacity

Context1,050,000

Max output128,000

TokenizerGPT