GPT-5 · context window1M-token

Unverified: one source, not a primary one. Asserted once a primary source or a second independent domain confirms it.

Valid from

2026-03-05

Valid until

still holds

Published

2026-03-05

Recorded by AsOf

2026-11-01

Checked

2026-11-01 · its source page states the value and the date (its publisher's feed entry for the page)

Confidence

0.50

Sources

“Introducing GPT-5.4, OpenAI’s most most capable and efficient frontier model for professional work, with state-of-the-art coding, computer use, tool search, and 1M-token context”— what the publisher's feed entry for the page says, read 2026-11-01

• Introducing GPT-5.4secondary · openai.com · 2026-03-05

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