o3-mini
OpenAI o3-mini is a cost-efficient language model optimized for STEM reasoning tasks, particularly excelling in science, mathematics, and coding.
This model supports the reasoning_effort parameter, which can be set to "high", "medium", or "low" to control the thinking time of the model. The default is "medium". OpenRouter also offers the model slug openai/o3-mini-high to default the parameter to "high".
The model features three adjustable reasoning effort levels and supports key developer capabilities including function calling, structured outputs, and streaming, though it does not include vision processing capabilities.
The model demonstrates significant improvements over its predecessor, with expert testers preferring its responses 56% of the time and noting a 39% reduction in major errors on complex questions. With medium reasoning effort settings, o3-mini matches the performance of the larger o1 model on challenging reasoning evaluations like AIME and GPQA, while maintaining lower latency and cost.
- Organization
- OpenAI
- Family
- o-mini
- Providers
- 14
- Context
- 200,000
- Output limit
- 100,000
- Knowledge
- 2024-05
- Release
- 2024-12-20
- Updated
- 2025-01-29
- Weights
- Closed
- Input
- text
- Output
- text
- Capabilities
- Tools, Reasoning, Structured
Providers
Compare every cataloged offer for this model, including its provider, route, token limits, price, and capabilities.
| Provider | Model ID | Context | Output | Input / output · 1M | Reasoning | Tools | Structured | Details |
|---|---|---|---|---|---|---|---|---|
| Abacus | o3-mini | 200,000 | 100,000 | $1.10 / $4.40 | Yes | Yes | Yes | View |
| AnyAPI | openai/o3-mini | 200,000 | 100,000 | — / — | Yes | Yes | Yes | View |
| Azure | o3-mini | 200,000 | 100,000 | $1.10 / $4.40 | Yes | Yes | — | View |
| Azure Cognitive Services | o3-mini | 200,000 | 100,000 | $1.10 / $4.40 | Yes | Yes | — | View |
| Cloudflare AI Gateway | openai/o3-mini | 200,000 | 100,000 | $1.10 / $4.40 | Yes | Yes | Yes | View |
| DevPass (LLM Gateway) | o3-mini | 200,000 | 100,000 | $1.10 / $4.40 | Yes | Yes | Yes | View |
| Eden AI | openai/o3-mini | 200,000 | 100,000 | $1.10 / $4.40 | Yes | Yes | Yes | View |
| Impossibl | openai/o3-mini | 200,000 | 100,000 | $1.10 / $4.40 | Yes | Yes | Yes | View |
| Kilo Gateway | openai/o3-mini | 200,000 | 100,000 | $1.10 / $4.40 | Yes | Yes | Yes | View |
| LLM Gateway | openai/o3-mini | 200,000 | 100,000 | $1.10 / $4.40 | No | No | Yes | View |
| Merge Gateway | openai/o3-mini | 200,000 | 100,000 | $1.10 / $4.40 | Yes | Yes | Yes | View |
| NanoGPT | openai/o3-mini | 200,000 | 100,000 | $1.10 / $4.40 | Yes | Yes | Yes | View |
| NEAR AI Cloud | openai/o3-mini | 200,000 | 100,000 | $1.10 / $4.40 | Yes | Yes | Yes | View |
| OpenAIvia OpenRouter | openai/o3-mini unknown | 200,000 | 100,000 | $1.10 / $4.40 | Yes | Yes | Yes | View |
Prices and limits apply to each offer. A dash means the value is not provided. OpenRouter offers show the hosting provider and routing channel separately.
Pricing
Compare token rates and cache charges across available routes and hosting configurations.
Lowest listed input and output prices across the offers above; they may belong to different providers. These are base rates, before conditional pricing, discounts or additional fees.
openai/o3-miniObserved - Input
- $1.10
- Output
- $4.40
- Cache read
- $0.55
Additional fees and pricing conditions
- web search
- $0.01 / search
Hosting prices through OpenRouter All endpoints and cache rates
| Endpoint | Input / 1M | Output / 1M | Cache read / 1M | Cache write / 1M |
|---|---|---|---|---|
| OpenAIopenai | $1.10 | $4.40 | $0.55 | — |
Each row is a hosting configuration. Open an offer in Providers for its full pricing conditions and additional fees. Endpoint observations may differ from the routing catalog's base price.
Performance
Review reported latency and output-throughput percentiles from the latest observed rolling window.
Time to first token · milliseconds
All latency percentiles 1 endpoints
| Endpoint | P50 | P75 | P90 | P99 |
|---|---|---|---|---|
| OpenAIopenai | 3,778 ms | 5,769.75 ms | 8,666.5 ms | 13,965.9 ms |
Output throughput · tokens per second
All throughput percentiles 1 endpoints
| Endpoint | P50 | P75 | P90 | P99 |
|---|---|---|---|---|
| OpenAIopenai | 209.5 t/s | 224.5 t/s | 237.7 t/s | 246.28 t/s |
Percentiles describe the observed request distribution. These are snapshots of a rolling window, not a historical time series.
Uptime
Compare successful request rates across the latest 5-minute, 30-minute, and 24-hour observations.
Reported by OpenRouter at the time of collection; rate-limited requests are excluded. A dash means no measurement was reported. This is not a live availability check.
Technical details & API
Explore specifications, supported parameters, reasoning controls, and API identifiers for each OpenRouter route.
openai/o3-miniObserved - Context
- 200,000
- Maximum output
- 100,000
- Tokenizer
- GPT
- Input
- text, file
- Output
- text
- Moderation
- Yes
- Knowledge cutoff
- 2023-10-31
- Added to OpenRouter
- 2025-01-31
https://openrouter.ai/api/v1openai/o3-miniopenai/o3-mini-2025-01-31Reasoning
- Required
- No
- Enabled by default
- Not reported
- Default effort
- —
- Supported efforts
- —
Supported parameters
include_reasoningmax_tokensreasoningresponse_formatseedstructured_outputstool_choicetools
Frequently asked questions
Answers based on the model metadata and serving offers currently in the catalog.
How much does o3-mini cost?
Listed rates start at $1.10 per million input tokens and $4.40 per million output tokens. Prices vary by provider and configuration; see Pricing for details.
Which providers offer o3-mini?
There are 14 cataloged offers across 14 providers. Compare model IDs, prices and limits in Providers.
What is the context window?
The cataloged model context is 200,000 tokens. Each serving endpoint may apply a different limit.
Does it support tools and structured output?
Tool calling: Yes. Structured output: Yes. Support can vary by endpoint.
Catalog history · 2 recorded revisions
Metadata observations since this model was first cataloged. These are not model release versions.
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