VENDOR-RECOMMENDED PATH · GPT-5.6 SOL · $4/$20 PER 1M
$0
per month
On October 23, 2026, OpenAI shuts down gpt-4-0613, gpt-4-turbo, o1, o3-mini and o4-mini. This calculator prices the migration for AI agents in 2026 — vendor-recommended path versus cheaper alternative.
It is OpenAI's October 23, 2026 retirement wave: gpt-4-0613, gpt-4-turbo, o1, o3-mini, o4-mini, gpt-image-1 and fine-tuned models go dark, with GPT-5.6 Sol named as the official substitute. For AI agents in 2026 this is not just a migration — the recommended replacement costs about twice per token, so pricing the move before the deadline is the difference between a planned migration and a surprise bill.
The vendor sets a shutdown date; after it, API calls to the model fail and must be moved to a replacement. Deprecations can also raise prices and change behavior — price the migration before the deadline.
OpenAI's October 23, 2026 shutdown wave covers gpt-4-0613, gpt-4-turbo, o1, o3-mini, o4-mini, gpt-image-1 and ft-* models, per OpenAI's published deprecation schedule. GPT-5.6 Sol is the vendor-named substitute.
It depends on your token volume and which replacement you pick. Run the numbers in our migration cost calculator — it compares the vendor-recommended path against a cheaper alternative so you can price the move.
On October 23, OpenAI shuts down gpt-4-0613, gpt-4-turbo, o1, o3-mini and o4-mini. The vendor's recommended replacement (GPT-5.6 Sol) costs 2× per token of the cheaper alternative (GPT-6.1 Sol). Enter your monthly usage — the arithmetic is deterministic, the prices are cited below.
Shutdown wave: gpt-4-0613, gpt-4-turbo, o1, o3-mini, o4-mini, gpt-image-1 and ft-* models go dark October 23, 2026 (three smaller waves already passed Sep 24–Oct 1), with OpenAI naming gpt-5.6-sol as the official substitute on its own deprecations page. Pricing: GPT-5.6 Sol $4 input / $20 output per 1M tokens; GPT-6.1 Sol (released Sep 29, 2026) $2 / $10 per 1M (VentureBeat, Oct 2026). Honesty note: GPT-5.6 Sol's $4/$20 is promotional pricing guaranteed at least through Nov 21, 2026 — the 2× gap reflects current prices, so re-run your numbers if the promo ends. Arithmetic only: (input × in-rate + output × out-rate). No quality claims — run your own evals before switching; that's exactly what ModelMinder's migration evals are for.
What happens when an AI model is deprecated?
The vendor sets a shutdown date; after it, API calls to the model fail and must be moved to a replacement. Deprecations can also raise prices and change behavior — price the migration before the deadline, don't scramble after it.
Which OpenAI models are being shut down?
OpenAI's October 23, 2026 shutdown wave covers gpt-4-0613, gpt-4-turbo, o1, o3-mini, o4-mini, gpt-image-1 and ft-* models, per OpenAI's published deprecation schedule. GPT-5.6 Sol is the vendor-named replacement.
How much does AI model migration cost?
It depends on your token volume and which replacement you pick. Run the numbers in our migration cost calculator — it compares the vendor-recommended path against a cheaper alternative so you can price the move before the deadline.