GPT-4 Turbo

gpt-4-turbo, including the gpt-4-turbo-2024-04-09 snapshot and the gpt-4-turbo-completions alias, was shut down on 2026-10-23 and OpenAI names gpt-5.6-sol as the replacement. Until 2026-10-24 the row was held at deprecated on OpenAI's own deprecations page, section '2026-04-22: Legacy GPT model snapshots', which stated the shutdown date and the recommended replacement as columns of a table; the date passing on 2026-10-23 was not treated as evidence on its own. Rates read the same day from developers.openai.com/api/docs/pricing (Standard tier), which priced deprecated models; on the 2026-10-24 read the pricing page's own data payload still carries these same rates, so they are kept as the last published ones. Standard-tier rates, listed against the dated snapshot: input $10.00, output $30.00 per 1M, with no cached-input rate published. Specs are from developers.openai.com/api/docs/models/gpt-4-turbo: 128,000 context window, 4,096 max output tokens, knowledge cutoff Dec 01, 2023, text and image in, text out. released carries the date embedded in the snapshot id. The gpt-4-turbo-preview line and its gpt-4-0125-preview snapshot are a separate, earlier deprecation on the same page with a shutdown date of 2026-03-26 and are not carried here. THE DELAY IS OURS, NOT A PROVIDER EVENT: the announcement, the date and the replacement are all OpenAI's, published 2026-04-22; this catalog simply never carried the row. It was added 2026-09-21, 32 days before the shutdown. CONFIRMED RETIRED 2026-10-24. Signal (first-party, past tense): the same section of developers.openai.com/api/docs/deprecations now states "Access to these models was shut down on October 23, 2026." and lists gpt-4-turbo | gpt-4-turbo-2024-04-09, gpt-4-turbo-completions in its table with substitute gpt-5.6-sol - an executed shutdown, not a scheduled one. The substitute is unchanged.

Source: OpenAI official documentation ↗

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GPT-4 Turbo — questions & answers