o3 Mini

Dec 2024
Retired 2026-10-23Replace withGPT-5.6 SolNewer versionMiMo v2.6 ProCheaper, as goodGPT-6 LunaBetter
o3 Mini
Compare in
on
—per task?
$1.10 / $4.40per 1M in / outcache $0.55
237 tok/sfirst token in 7.3 s?
200Kcontext

Rankingin thinking mode?

Retired models are left out of the current rankings.

Alternatives?

ModelScoreCostPer taskWhat changes
CheaperMiMo v2.6 ProthinkingOpen×3.7-72%$0.13Pass back reasoning_content+3BetterGPT-6 Lunalow+73%-90%$0.005Function calling only with none · Chat Completions+3CheaperDeepSeek V4.1 Flash 1017maxOpen×3.6-73%$0.26Pass back reasoning_content · Chat Completions+4CheaperStep 5 PreviewthinkingOpen×3.5-26%$1.03web_search not available · Chat Completions+2CheaperClaude Haiku 5.5max×3.5-90%$0.21Remove sampling parameters+5

History

3 versions
121314151617Jan 25Apr 25Release dateAA Intelligence Index 4.3.2o3o4
121314151617Jan 25Apr 25Release dateAA Intelligence Index 4.3.2o3o4

Benchmarks

all categories
Chat & Knowledge
Humanity's Last Exam7.9
AA Intelligence Index 4.3.2≈12.5
GPQA Diamond74.8
Coding
Terminal-Bench Hard (version unstated)6.8
LiveCodeBench · AA archived71.7
Agents & Tool Use
τ²-bench · AA28.7

FAQ

How much does o3 Mini cost?›

$1.10 per 1M input tokens and $4.40 per 1M output tokens; cached input $0.55 per 1M.

Is o3 Mini free to use?›

There is no free API; the cheapest paid price is $1.10 per 1M input tokens.

How can I use o3 Mini?›

Through the API of OpenAI.

What is the context window of o3 Mini?›

200K tokens, with up to 100K output tokens.

When was o3 Mini released? Is there a newer version?›

Released 2024-12-20. It has been superseded by GPT-5.6 Sol.

Is o3 Mini open source?›

No, o3 Mini is a closed model available through an API. The closest open-weights option here is MiMo v2.6 Pro.

Can o3 Mini read images?›

It accepts text and PDF files as input.

What is o3 Mini?›

o3 Mini is a closed language model from OpenAI, released Dec 2024.

What are the best alternatives to o3 Mini?›

MiMo v2.6 Pro (cheaper), GPT-6 Luna (better).