Deprecations / Migrate

Migrate off o3-mini

Deprecated

o3-mini is deprecated and shuts down on 23 Oct 2026. OpenAI's official replacement is GPT-5.6 Sol. The cheapest comparable model we track is Llama 3.1 8B Instruct (Meta) at $0.022 per 1M tokens blended.

Last verified: 26 Sep 2026 · sourced from official provider documentation

StatusDeprecatedOpenAI
Shutdown date23 Oct 2026deprecated 22 Apr 2026
Official replacementGPT-5.6 Sol$8 /M blendedCheapest alternativeLlama 3.1 8B Instruct$0.022 /M blended
What changes

o3-mini → GPT-5.6 Sol

Moving to GPT-5.6 Sol means 4.2× more expensive ($1.93 → $8 /1M blended) and a larger context window (200K → 1.1M).

Speco3-miniGPT-5.6 Sol
StatusDeprecatedGA
Blended price /1M$1.93$8
Input / output /1M$1.10 / $4.40$4 / $20
Context window200K1.1M
Max output100.000128.000
Modalitytexttext, image
Knowledge cutoff1 Oct 202316 Feb 2026

API string was o3-mini-2025-01-31 → switch to gpt-5.6-sol. See GPT-5.6 Sol's full spec sheet →

Cheapest alternatives

Budget-friendly replacements for o3-mini

Generally-available models that match o3-mini's capabilities (and at least half its 200K context), ranked by blended price. Every number is computed from official catalog prices.

ModelBlended /1MInput / outputContext
Llama 3.1 8B Instruct
Meta
$0.022$0.02 / $0.03128K
Amazon Nova Micro
Amazon
$0.061$0.035 / $0.14128K
Command R7B
Cohere
$0.066$0.037 / $0.15128K
FAQ

Migrating off o3-mini

What replaces o3-mini?

OpenAI's recommended migration for o3-mini is GPT-5.6 Sol. The cheapest comparable model in our catalog is Llama 3.1 8B Instruct (Meta) at $0.022/1M blended.

When is o3-mini shut down?

o3-mini is deprecated and scheduled to shut down on 23 Oct 2026 (deprecated 22 Apr 2026). Migrate before that date to avoid a 404.

What is the cheapest alternative to o3-mini?

Llama 3.1 8B Instruct (Meta) is the cheapest generally-available alternative we track that matches o3-mini's capabilities, at $0.02 per 1M input and $0.03 per 1M output tokens ($0.022/1M blended).

Browse the full deprecation watch → or see o3-mini's full spec sheet →