OpenAI: o3
openai/o3 · OpenAIUnmeasurable- Declared family
- GPT
- Evidence confidence
- Unknown
- Declared tokenizer tag
- GPT
- Entered catalogue
- 16 April 2025
- Last tested
- Not yet measured
- Measurement
- Deferred: measurement cost above the per-model cap
Evidence stack
Signals of different kinds, weighed together| Signal | Result | Reference |
|---|---|---|
| Tokenizer signature | Not measured | – |
| API surface | Identical contract to 3 other entries | api_a2a7f2ca |
| Context and output | 200,000 context · 100,000 max output | declared |
| Reasoning contract | Optional | declared |
| Serving providers observed | None recorded yet | – |
Declared record
What the catalogue claims about this modelo3 is a well-rounded and powerful model across domains. It sets a new standard for math, science, coding, and visual reasoning tasks. It also excels at technical writing and instruction-following....
- Modalities
- text+image+file->text
- Declared tokenizer
- GPT
- Prompt price
- $2.00 / M tokens
- Completion price
- $8.00 / M tokens
Supported parameters
include_reasoningmax_tokensreasoningresponse_formatseedstructured_outputstool_choicetools
defaults: {}
History
Every observation, kept as taken- 16 April 2025Enters the OpenRouter catalogue declared as GPT.
Cite this page as the evidence record for OpenAI: o3: the URL is stable, measurements are dated, and revisions append to the history above. Method: tokenizer fingerprinting, v1, 50 strings.
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