o1-preview (09-12)
o1-preview (09-12) is a released coding, agents, and long context model with 128k context; evaluate it while provider pricing coverage matures.
Use it for
- Teams evaluating coding, agents, and long context
- Workloads that can use a 128k context window
Do not use it for
- Cost-sensitive launches that need sourced token pricing
- Vision or document-understanding workloads
- Strict JSON or tool-calling flows
- Family
- o1
- Released
- 2024-09-12
- Context
- 128k
- Architecture
- Decoder Only
- Knowledge cutoff
- 2023-10
- Specialization
- general
- Openness
- Proprietary
- License
- ProprietaryCommercial use: conditional
- Weights
- Not released
- Code
- Unknown
- Training
- Fine-tuned
No tracked provider token pricing is available yet.
About
o1-preview (09-12) is OpenAI's o1 model with an optional reasoning mode. It offers a 128K-token context window and scores 73.3 on GPQA.
o1-preview (09-12) is a proprietary model in the o1 family. The structured metadata tracks a 128k-token context window, reasoning, and code execution. Headline tracked benchmarks include Google-Proof Q&A 73.3.
Top use-case fit: coding, agents, and build tasks
Coding
Included by capability and metadata signals in the decision map.
Agents
Included by capability and metadata signals in the decision map.
Long context
Included by capability and metadata signals in the decision map.
Provider price ladder
No tracked provider token pricing is available for this model yet.
Capabilities
Benchmark peer barsfor Coding
No task-mapped benchmark peers are available for this model yet.
Benchmark scores(1)
| Benchmark | Score | Version | Evaluation | Source |
|---|---|---|---|---|
| Google-Proof Q&A | 73.3 | diamondObserved 2026-04-15 | — | Source |
Migration checks
No linked migration route is available for this model yet.
Frequently asked questions
What is the context window of o1-preview (09-12)?
o1-preview (09-12) has a context window of 128k tokens.
When was o1-preview (09-12) released?
o1-preview (09-12) was released on 2024-09-12.
What benchmarks has o1-preview (09-12) been tested on?
o1-preview (09-12) has been evaluated on 1 benchmark, including Google-Proof Q&A.