Migrate off o3-deep-research
Deprecatedo3-deep-research is deprecated and shuts down on 23 Jul 2026. OpenAI's official replacement is GPT-5.5 Pro. The cheapest comparable model we track is Amazon Nova Lite (Amazon) at $0.105 per 1M tokens blended.
Last verified: 13 Aug 2026 · sourced from official provider documentation
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o3-deep-research → GPT-5.5 Pro
Moving to GPT-5.5 Pro means 7.7× more expensive ($8.75 → $67.50 /1M blended) and a larger context window (200K → 1.1M).
| Spec | o3-deep-research | GPT-5.5 Pro |
|---|---|---|
| Status | Deprecated | GA |
| Blended price /1M | $8.75 | $67.50 |
| Input / output /1M | $5 / $20 | $30 / $180 |
| Context window | 200K | 1.1M |
| Max output | 100.000 | 128.000 |
| Modality | text, image | text, image |
| Knowledge cutoff | — | 1 Dec 2025 |
API string was o3-deep-research → switch to gpt-5.5-pro. See GPT-5.5 Pro's full spec sheet →
Budget-friendly replacements for o3-deep-research
Generally-available models that match o3-deep-research's capabilities (and at least half its 200K context), ranked by blended price. Every number is computed from official catalog prices.
| Model | Blended /1M | Input / output | Context |
|---|---|---|---|
| Amazon Nova Lite Amazon | $0.105 | $0.06 / $0.24 | 300K |
| Llama 4 Scout (17B-16E Instruct) Meta | $0.15 | $0.1 / $0.3 | 10M |
| Ministral 3 8B Mistral | $0.15 | $0.15 / $0.15 | 256K |
Migrating off o3-deep-research
What replaces o3-deep-research?
OpenAI's recommended migration for o3-deep-research is GPT-5.5 Pro. The cheapest comparable model in our catalog is Amazon Nova Lite (Amazon) at $0.105/1M blended.
When is o3-deep-research shut down?
o3-deep-research is deprecated and scheduled to shut down on 23 Jul 2026 (deprecated 22 Apr 2026). Migrate before that date to avoid a 404.
What is the cheapest alternative to o3-deep-research?
Amazon Nova Lite (Amazon) is the cheapest generally-available alternative we track that matches o3-deep-research's capabilities, at $0.06 per 1M input and $0.24 per 1M output tokens ($0.105/1M blended).
Browse the full deprecation watch → or see o3-deep-research's full spec sheet →
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