o4-mini-2025-04-16
Reasoning model by OpenAI.
April 16, 2025 snapshot of o4-mini featuring multimodal perception and 100K token output generation, ranked 160 on the LM Arena text leaderboard.
Specifications
Context window, ranked against other reasoning models
Insufficient data
No published context window for this model or its peers.
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reasoning
Benchmarks & performance rankings
Published LLM Arena category placements and Elo ratings for o4-mini-2025-04-16.
1353Elo
1368Elo
1389Elo
1294Elo
1350Elo
1320Elo
1350Elo
1314Elo
1336Elo
1194Elo
Source: huggingface.co · CC-BY-4.0 ·
Pricing
Rates are read live
Pricing for o4-mini-2025-04-16 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 o4-mini-2025-04-16 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-costheader, so you can reconcile spend per request.
More from OpenAI
Start building with o4-mini-2025-04-16
One API key, three steps. Choose your tool to begin.
Get a key
Create API keySet your API key
export NROUTER_API_KEY="<YOUR_API_KEY>"Configure Claude Code
Choose a tool, then copy its setup from the panel.
FAQs
What is o4-mini-2025-04-16?
April 16, 2025 snapshot of o4-mini featuring multimodal perception and 100K token output generation, ranked 160 on the LM Arena text leaderboard.
How much does o4-mini-2025-04-16 cost?
o4-mini-2025-04-16 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 o4-mini-2025-04-16 support tool calling and structured outputs?
Yes. o4-mini-2025-04-16 supports tool calling (function calling), so it can invoke external tools and APIs during a conversation.
What inputs and outputs does o4-mini-2025-04-16 support?
o4-mini-2025-04-16 takes text and images as input and returns text as output.
How do I use o4-mini-2025-04-16 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/o4-mini-2025-04-16". The quick-start panel above has a copy-paste curl command for this model.
When was o4-mini-2025-04-16 released?
o4-mini-2025-04-16 was released on April 16, 2025.
Where is the o4-mini-2025-04-16 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).