New: $100 promo credits · Daily limits applyGet started

o3-mini-2025-01-31

Reasoning model by OpenAI.

January 31, 2025 snapshot of o3-mini delivering fast reasoning capabilities, function calling, and 200K token context limits for production services.

Get API keyPlayground
Models / o3-mini-2025-01-31ID: openai/o3-mini-2025-01-31

Maker

OpenAI

Served On: OpenAI API

Specifications

Context window, ranked against other reasoning models

Insufficient data

No published context window for this model or its peers.

Context window

—

Max output

—

Modality

reasoning

Vision
Function calling
System prompt

Pricing

Rates are read live

Pricing for o3-mini-2025-01-31 is fetched from the live catalogue on load, so it is never served from a cache that could outlive a repricing.

Availability

Not enough data yet

We have not collected enough health probes for this model to publish an uptime or latency figure. A percentage from a handful of samples is fabricated precision, so none is shown until the sample count supports one.

How o3-mini-2025-01-31 is billed

Billed at the provider's list price, with no per-token markup.

Exact list price
Tokens settle at the published rate of the model that served your call.
Cache discounts passed through
Provider prompt-caching discounts reach your balance with no added fee.
Cost on every response
Each response carries the x-nr-request-cost header, so you can reconcile spend per request.

More from OpenAI

whisper-1o1o3-minigpt-5.5-pro

Start building with o3-mini-2025-01-31

One API key, three steps. Choose your tool to begin.

  1. Get a key

    Create API key

  2. Set your API key

    export NROUTER_API_KEY="<YOUR_API_KEY>"

  3. Configure Claude Code

    Choose a tool, then copy its setup from the panel.

npm install -g @anthropic-ai/claude-code
Claude Code · openai/o3-mini-2025-01-31
# Point Claude Code to nRouter gateway
export ANTHROPIC_BASE_URL="https://api.nrouter.ai"
export ANTHROPIC_API_KEY="$NROUTER_API_KEY"

# Launch with openai/o3-mini-2025-01-31
claude --model openai/o3-mini-2025-01-31

FAQs

What is o3-mini-2025-01-31?

January 31, 2025 snapshot of o3-mini delivering fast reasoning capabilities, function calling, and 200K token context limits for production services.

How much does o3-mini-2025-01-31 cost?

o3-mini-2025-01-31 is billed at the provider's list price on nRouter with no per-token markup — tokens settle at the exact upstream rate. Input and output rates are read live, so see the pricing section above for the current figures.

Does o3-mini-2025-01-31 support tool calling and structured outputs?

Yes. o3-mini-2025-01-31 supports tool calling (function calling), so it can invoke external tools and APIs during a conversation.

What inputs and outputs does o3-mini-2025-01-31 support?

o3-mini-2025-01-31 takes text and images as input and returns text as output.

How do I use o3-mini-2025-01-31 via nRouter?

Use any OpenAI-compatible client: point it at https://api.nrouter.ai/v1 with your nRouter API key and set the model to "openai/o3-mini-2025-01-31". The quick-start panel above has a copy-paste curl command for this model.

When was o3-mini-2025-01-31 released?

o3-mini-2025-01-31 was released on January 31, 2025.

Where is the o3-mini-2025-01-31 documentation?

Start at nrouter.ai/docs. The quick-start guide (nrouter.ai/docs/getting-started/quick-start) covers API keys and your first request, and the API reference (nrouter.ai/docs/api-reference) lists every parameter.

What other text models does OpenAI have?

Other OpenAI text models on nRouter include Whisper 1 (nrouter.ai/models/whisper-1), o1 (nrouter.ai/models/o1), o3 Mini (nrouter.ai/models/o3-mini), GPT-5.5 Pro (nrouter.ai/models/gpt-5.5-pro).