# OpenAI will shut off GPT-4o and GPT-4.1 in the API on January 14, 2027

> OpenAI's deprecations page lists GPT-4o and GPT-4.1 snapshots for removal from the API on January 14, 2027, and names GPT-6 Luna as the replacement.

Published 2026-10-14T08:00:00-07:00 · Daily Digest · Canonical: https://news.littlewolflabs.com/posts/2026-10-14-openai-gpt-4o-4-1-api-shutdown

[OpenAI's deprecations page](https://platform.openai.com/docs/deprecations), dated Oct 14, lists for removal on Jan 14, 2027: `gpt-4o-2024-08-06`, `gpt-4o-2024-11-20`, `gpt-4o-mini-2024-07-18`, `gpt-4.1-2025-04-14`, `gpt-4.1-mini-2025-04-14`. Fine-tunes of them go the same date; OpenAI names `gpt-6-luna` as replacement for all. About three months' notice, while the same page says GA models get "at least 6 months" unless safety or compliance requires faster. [On X](https://x.com/Dana_CRN/status/2110421381372325977) a #Keep4o petition and open letter circulate and developers point at the gap.

## What it costs

[GPT-6 Luna](https://platform.openai.com/docs/pricing) lists $0.10/M input, $0.50/M output.

## Should you switch

If anything calls these snapshots, start testing Luna now rather than in January; prompts tuned for 4o's tone may need rework.