Migrating from o1-pro-2025-03-19 to gpt-5.6-sol
What changes when you move from o1-pro-2025-03-19 to gpt-5.6-sol: input price −97.3%, output price −96.7%, context window 200,000 → 1,050,000 tokens.
- Status
- Deprecated
- Shutdown
- Oct 23, 2026
- Time left
- 8 days
- Status
- Active
- Shutdown
- none announced
- Time left
- —
Prices
USD per 1M tokens, standard tier| Type | o1-pro-2025-03-19 | gpt-5.6-sol | Change |
|---|---|---|---|
| Input | $150.00first seen October 1, 2026 · source | $4.00first seen October 1, 2026 · source | −97.3% |
| Cached input | Not published | $0.40first seen October 1, 2026 · source | — |
| Output | $600.00first seen October 1, 2026 · source | $20.00first seen October 1, 2026 · source | −96.7% |
At 1M input and 250K output tokens a month: $300.00 on o1-pro-2025-03-19, $9.00 on gpt-5.6-sol (−97%).
Other tiers, prompt-size bands and modalities are on each model's page.
Limits
Tokens| Limit | o1-pro-2025-03-19 | gpt-5.6-sol | Change |
|---|---|---|---|
| Context window | 200,000 tokensin place when tracking began (October 7, 2026) · source | 1,050,000 tokensin place when tracking began (October 7, 2026) · source | +425% |
| Max output tokens | 100,000 tokensin place when tracking began (October 7, 2026) · source | 128,000 tokensin place when tracking began (October 7, 2026) · source | +28% |
Features and parameters
Compare modelsSame on both
- Structured outputs: supported on both.o1-pro-2025-03-19: in place when tracking began (October 7, 2026) · source · gpt-5.6-sol: in place when tracking began (October 7, 2026) · source
- Function calling: supported on both.o1-pro-2025-03-19: in place when tracking began (October 7, 2026) · source · gpt-5.6-sol: in place when tracking began (October 7, 2026) · source
- Batch API: supported on both.o1-pro-2025-03-19: in place when tracking began (October 7, 2026) · source · gpt-5.6-sol: in place when tracking began (October 7, 2026) · source
- Image input: supported on both.o1-pro-2025-03-19: in place when tracking began (October 7, 2026) · source · gpt-5.6-sol: in place when tracking began (October 7, 2026) · source
- Reasoning / thinking: supported on both.o1-pro-2025-03-19: in place when tracking began (October 7, 2026) · source · gpt-5.6-sol: in place when tracking began (October 7, 2026) · source
- Fine-tuning: not supported on both.o1-pro-2025-03-19: in place when tracking began (October 7, 2026) · source · gpt-5.6-sol: in place when tracking began (October 7, 2026) · source
Not published for o1-pro-2025-03-19: Prompt caching, PDF input, Built-in web search, temperature parameter, top_p parameter, logprobs.
Not published for gpt-5.6-sol: PDF input, temperature parameter, top_p parameter, logprobs.
Free tier
o1-pro-2025-03-19: no free tier listed
gpt-5.6-sol: 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
gpt-5.6-sol adds a free tier.
Aliases
All aliasesAliases pointing at o1-pro-2025-03-19: o1-pro (in place when tracking began (October 7, 2026) · source)
Aliases pointing at gpt-5.6-sol: gpt-daybreak-blue-latest (in place when tracking began (October 7, 2026) · source)
On cloud platforms
All platform dates| Model | Platform | Platform ID | Shutdown | Time left |
|---|---|---|---|---|
| o1-pro-2025-03-19 | Microsoft Foundryversion 2025-03-19 | o1-pro | Nov 19, 2026Deprecated | 35 days |
| gpt-5.6-sol | Amazon Bedrock | openai.gpt-5.6-sol | not before Jul 13, 2027Active | |
| gpt-5.6-sol | Microsoft Foundryversion 2026-07-09 | gpt-5.6-sol | Jan 11, 2028Active | 453 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-pro-2025-03-19togpt-5.6-sol.
Counting to 8:00 pm ET on October 22, 2026, which is 00:00 UTC on October 23, 2026.
Compared from AIWire's published data when this page loaded. Each fact links to the page it came from. Model pages: o1-pro-2025-03-19, gpt-5.6-sol.