o4 Mini

Tool callingStructured outputReasoningImage input

Launch post Website Docs

Fast o-series model for compact reasoning, coding, and tool use

Context: 200K
Released: 1y ago
Input / 1M tokens: $1.10
Output / 1M tokens: $4.40
Cached input / 1M tokens: $0.28

Sources:models.devOpenRouter

Benchmarks

DeepSWE is the primary coding benchmark where an exact model evaluation exists. Other sourced evaluations appear below; missing scores are not zero.

Not evaluated in DeepSWE 1.1 as of 2026-09-22. Results are only shown for exact model versions in the official dataset. Official leaderboard.

No benchmark results have been matched to this model yet.

Specifications

Developer: OpenAI
Model family: o-series
Type: Language model
Predecessor: —
Successor: —
Released: April 16, 2025
Model ID: openai/o4-mini
Openness: Closed
License: —
Input modalities: image, text, file
Output modalities: text
Modality: text+image+file->text
Tokenizer: GPT
Max output tokens: 100K
Knowledge cutoff: 2024-05
Hugging Face: —
Source freshness: Metadata synced Oct 8, 2026, 10:17 PM UTC

Additional source evidence

Source model: openai/o4-mini
Source family: o-mini
Last updated: 2025-04-16
Knowledge cutoff: 2024-05
Model context: 200K
Model output limit: 100K
Open weights: No
File attachments: Yes
Reasoning: Yes
Tool calling: Yes
Structured output: Yes
Temperature control: No

Published benchmarks

Benchmark	Score	Evaluation details	Evidence
Aider Polyglot	72 · percent correct	2025-04-16	Source

Complete source record (JSON)

{
  "id": "openai/o4-mini",
  "name": "o4-mini",
  "description": "Fast o-series model for compact reasoning, coding, and tool use",
  "family": "o-mini",
  "last_updated": "2025-04-16",
  "knowledge": "2024-05",
  "attachment": true,
  "reasoning": true,
  "tool_call": true,
  "structured_output": true,
  "temperature": false,
  "modalities": {
    "input": [
      "text",
      "image"
    ],
    "output": [
      "text"
    ]
  },
  "limit": {
    "context": 200000,
    "output": 100000
  },
  "benchmarks": [
    {
      "name": "Aider Polyglot",
      "score": 72,
      "source": "https://aider.chat/docs/leaderboards/",
      "metric": "percent correct",
      "date": "2025-04-16"
    }
  ],
  "release_date": "2025-04-16",
  "open_weights": false
}

Infrastructure

Provider availability

All providers

Provider	Endpoint	Context	Input /M tokens	Output /M tokens	Cached input /M tokens	Cache write /M tokens	Uptime 1d	Data handling
OpenAI	openai	200K	$1.10	$4.40	$0.28	—	100.00%	ZDR: No Training: Unknown Prompt logging: Unknown Retention: Unknown ZDR source Privacy policy Checked 2026-10-15
OpenAI	openaiBatch pricing	200K	$1.10	$4.40	$0.28	—	100.00%	ZDR: No Training: Unknown Prompt logging: Unknown Retention: Unknown ZDR source Privacy policy Checked 2026-10-15

Provider data:OpenRouter

Text provenance

EU · product-scoped

OpenAI textGrain watermarking

In the EU, ChatGPT-generated text uses textGrain. OpenAI says API customers can opt in globally for select models, so watermarking depends on the product surface and configuration.

Official explanation