Migrate off o3-deep-research
Retiredo3-deep-research has been retired and shut down on 23 Jul 2026. OpenAI's official replacement is GPT-5.6 Sol. The cheapest comparable model we track is Amazon Nova Lite (Amazon) at $0.105 per 1M tokens blended.
Last verified: 26 Sep 2026 · sourced from official provider documentation
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o3-deep-research → GPT-5.6 Sol
Moving to GPT-5.6 Sol means 1.1× cheaper ($8.75 → $8 /1M blended) and a larger context window (200K → 1.1M).
| Spec | o3-deep-research | GPT-5.6 Sol |
|---|---|---|
| Status | Retired | GA |
| Blended price /1M | $8.75 | $8 |
| Input / output /1M | $5 / $20 | $4 / $20 |
| Context window | 200K | 1.1M |
| Max output | 100.000 | 128.000 |
| Modality | text, image | text, image |
| Knowledge cutoff | — | 16 Feb 2026 |
API string was o3-deep-research → switch to gpt-5.6-sol. See GPT-5.6 Sol'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-5.6 Sol. The cheapest comparable model in our catalog is Amazon Nova Lite (Amazon) at $0.105/1M blended.
Is o3-deep-research still available?
No — o3-deep-research has been retired (shut down 23 Jul 2026) and is no longer available via OpenAI's API.
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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- DeprecatingGoogle re-pointed the Gemini 2.5 TTS migration path past the 3.1 preview and onto the new GA 3.8 TTS models
- New modelGemini 3.8 Flash TTS is GA - a flagship text-to-speech model at under half the audio rate of the preview it replaces, on a two-column price schedule
- New modelGemini 3.8 Flash-Lite TTS is GA - Google's cost-efficient TTS, which Google says was built to replace Gemini 3.1 Flash TTS
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