GPT-3.5 Turbo

gpt-3.5-turbo-0125, including the gpt-3.5-turbo alias and gpt-3.5-turbo-completions, shuts down 2026-10-23 and OpenAI names gpt-5.6-terra as the replacement. Signal used: OpenAI's own deprecations page, section '2026-04-22: Legacy GPT model snapshots', which states the shutdown date and the recommended replacement as columns of a table. Rates read the same day from developers.openai.com/api/docs/pricing (Standard tier), which still prices deprecated models. Standard-tier rates: input $0.50, output $1.50 per 1M, with no cached-input rate published; OpenAI prices the alias and the dated snapshot identically. Specs are from developers.openai.com/api/docs/models/gpt-3.5-turbo: 16,385 context window, 4,096 max output tokens, knowledge cutoff Sep 01, 2021, text only in and out. released is null on purpose: the snapshot id encodes 01-25 with no year and OpenAI publishes no release date for it, so dating it would mean supplying the year ourselves. The separately priced gpt-3.5-turbo-1106 and gpt-3.5-turbo-instruct rows appear in no deprecation table and are not carried yet. A fine-tuned variant, ft-gpt-3.5-turbo, carries the same shutdown date and is not covered by this row. 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.

Source: OpenAI official documentation ↗

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GPT-3.5 Turbo — questions & answers