WhichAI / Models / o3 Mini

o3 Mini

· verified October 13, 2026

legacy paid api

Provider

Statuslegacy

AA Intelligence Index12.5 (official, read October 13, 2026)

Released2025-01-31

Context window200K

ModalitiesText + files

API price $/1M (in / out)$1.1 / $4.4 (OpenRouter)

Speedn/a

AccessAPI $1.1/$4.4 per 1M tokens on OpenRouter · listed January 31, 2025

In one line

o3 Mini by OpenAI, measured by Artificial Analysis at 12.5 on the Intelligence Index. Added to WhichAI automatically from live data on October 13, 2026: no editorial review yet, so judge it by the numbers, not by a verdict. OpenRouter's description: “OpenAI o3-mini is a cost-efficient language model optimized for STEM reasoning tasks, particularly excelling in science, mathematics, and coding.”

Alternatives worth a look

Mercury 2.5 (Inception Labs) · AA 12.3API $0.04/$0.15 per 1M tokens on OpenRouter · listed September 8, 2026
Nemotron 3 Super (NVIDIA) · AA 12.8Open weights · its free OpenRouter route (nvidia/nemotron-3-super-120b-a12b:free) has been retired
Nemotron 3.5 Lightning (NVIDIA) · AA 12.9API $0.07/$0.2 per 1M tokens on OpenRouter · free route on OpenRouter (nvidia/nemotron-3.5-lightning:free) · open weights · listed August 11, 2026

Open o3's official app ↗ Open in the WhichAI app Not sure? Take the 30-second finder

Artificial Analysis Intelligence Index, official scale (the number published on artificialanalysis.ai), relayed by OpenRouter and refreshed automatically: last read October 13, 2026. 210 models carry a current official measurement. A value marked ~ is converted from an earlier snapshot because no current measurement is published; an unmeasured model is never ranked. Context, price, modality and listing dates come from the public OpenRouter model list (refreshed automatically on the live site; static copy retrieved October 3, 2026) and vendor pages. Missing values are not published or not yet verified - shown as -. Sources are linked inside the app (the Ranking chapter and About > Methodology).