Migrating from o1-preview to o1-2024-12-17
What changes when you move from o1-preview to o1-2024-12-17: context window 128,000 → 200,000 tokens.
- From
- o1-preview
- Status
- Retired
- Shutdown
- Jul 28, 2025
- Time left
- —
- Status
- Deprecated
- Shutdown
- Oct 23, 2026
- Time left
- 8 days
o1-2024-12-17 is itself deprecated, shutting down Oct 23, 2026. Its replacement is gpt-5.6-sol.
Prices
USD per 1M tokens, standard tier| Type | o1-preview | o1-2024-12-17 | Change |
|---|---|---|---|
| Input | Not published | $15.00first seen October 1, 2026 · source | — |
| Cached input | Not published | $7.50first seen October 1, 2026 · source | — |
| Output | Not published | $60.00first seen October 1, 2026 · source | — |
Other tiers, prompt-size bands and modalities are on each model's page.
Limits
Tokens| Limit | o1-preview | o1-2024-12-17 | Change |
|---|---|---|---|
| Context window | 128,000 tokensin place when tracking began (October 7, 2026) · source | 200,000 tokensin place when tracking began (October 7, 2026) · source | +56.3% |
| Max output tokens | 32,768 tokensin place when tracking began (October 7, 2026) · source | 100,000 tokensin place when tracking began (October 7, 2026) · source | +205.2% |
Benchmarks
Same benchmark and source on both sides; settings named where they differ| Benchmark | o1-preview | o1-2024-12-17 | Change |
|---|---|---|---|
| Arena TextArena. Ranges don't overlap. | 1389 ±5 | 1402 ±4 | +13 |
| Arena Text: CodingArena. | 1415 ±9 | 1433 ±10 | +18 within range |
GPQA DiamondEpoch AI, high effort (vs no setting).Other settings
| 50.3% | 76.8% | +26.5 pts |
MATH Level 5Epoch AI, high effort (vs no setting).Other settings
| 81.6% | 94.7% | +13.1 pts |
OTIS Mock AIME 2024-2025Epoch AI, high effort (vs no setting).Other settings
| 31.1% | 73.3% | +42.2 pts |
A score from one source is never compared with another source's, and company-reported scores are compared only within the same company; settings named where they differ. Data: Arena (arena.ai), CC BY 4.0; Epoch AI, Capabilities & benchmarking (epoch.ai/benchmarks), CC BY.
Features and parameters
Compare models- Batch API: not supported on o1-preview, supported on o1-2024-12-17.o1-preview: in place when tracking began (October 7, 2026) · source · o1-2024-12-17: in place when tracking began (October 7, 2026) · source
Same on both
- Structured outputs: supported on both.o1-preview: in place when tracking began (October 7, 2026) · source · o1-2024-12-17: in place when tracking began (October 7, 2026) · source
- Function calling: supported on both.o1-preview: in place when tracking began (October 7, 2026) · source · o1-2024-12-17: in place when tracking began (October 7, 2026) · source
- Reasoning / thinking: supported on both.o1-preview: in place when tracking began (October 7, 2026) · source · o1-2024-12-17: in place when tracking began (October 7, 2026) · source
- Fine-tuning: not supported on both.o1-preview: in place when tracking began (October 7, 2026) · source · o1-2024-12-17: in place when tracking began (October 7, 2026) · source
Not published for o1-preview: Prompt caching, Image input, PDF input, Built-in web search, temperature parameter, top_p parameter, logprobs.
Not published for o1-2024-12-17: Prompt caching, PDF input, Built-in web search, temperature parameter, top_p parameter, logprobs.
Free tier
o1-preview: no free tier listed
o1-2024-12-17: Free for shared data, 1M tokens a day for Launch and Grow (250K for Build), in place when tracking began (October 12, 2026) (source) · All free models
o1-2024-12-17 adds a free tier.
Aliases
All aliasesNo aliases point at o1-preview.
Aliases pointing at o1-2024-12-17: o1 (in place when tracking began (October 7, 2026) · source)
On cloud platforms
All platform dates| Model | Platform | Platform ID | Shutdown | Time left |
|---|---|---|---|---|
| o1-2024-12-17 | Microsoft Foundryversion 2024-12-17 | o1 | Nov 19, 2026Deprecated | 35 days |
Read daily from each platform's own pages. The status above uses each company's own date. Time left counts to 00:00 UTC on the shutdown date, which is the evening before in ET.
Checklist
- Change the model string from
o1-previewtoo1-2024-12-17.
Compared from AIWire's published data when this page loaded. Each fact links to the page it came from. Model pages: o1-preview, o1-2024-12-17.