OpenAI: o4 Mini
openai/o4-mini · OpenAINot yet established- Declared family
- GPT
- Evidence confidence
- Unknown
- Declared tokenizer tag
- GPT
- Entered catalogue
- 16 April 2025
- Last tested
- Not yet measured
- Measurement
- Awaiting measurement
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 modelOpenAI o4-mini is a compact reasoning model in the o-series, optimized for fast, cost-efficient performance while retaining strong multimodal and agentic capabilities. It supports tool use and demonstrates competitive reasoning...
- Modalities
- text+image+file->text
- Declared tokenizer
- GPT
- Prompt price
- $1.10 / M tokens
- Completion price
- $4.40 / 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: o4 Mini: the URL is stable, measurements are dated, and revisions append to the history above. Method: tokenizer fingerprinting, v1, 50 strings. The raw data behind every figure is on the data page.
CompareCompare now