Claude Fable 5$22.000/MClaude Opus 4.8$11.000/MClaude Opus 4.7$11.000/MClaude Opus 4.6$11.000/MClaude Opus 4.5$33.000/MClaude Sonnet 3.7$6.600/MClaude Opus 3$33.000/MClaude 2.1$12.800/MClaude 2$12.800/MGPT-5.5$12.500/MGPT-5.2$5.425/MGPT-5.2-Codex$5.425/MGPT-5$3.875/MGPT-4.5$97.500/MGPT-4 Turbo Preview$16.000/MGPT-4$39.000/MGPT-4-32k$78.000/Mo3$19.000/Mo3-mini$2.090/Mo4-mini$2.090/Mo1$28.500/Mo1-mini$5.700/Mo1-preview$28.500/MGemini 3.5 Pro$5.000/MGemini 3.1 Pro$5.000/MGemini 3 Pro$5.000/MGemini 2.5 Pro$3.875/MGemini 1.5 Pro$2.375/MGemini 1.0 Ultra$12.000/MGemini 1.0 Pro$0.800/MClaude Fable 5$22.000/MClaude Opus 4.8$11.000/MClaude Opus 4.7$11.000/MClaude Opus 4.6$11.000/MClaude Opus 4.5$33.000/MClaude Sonnet 3.7$6.600/MClaude Opus 3$33.000/MClaude 2.1$12.800/MClaude 2$12.800/MGPT-5.5$12.500/MGPT-5.2$5.425/MGPT-5.2-Codex$5.425/MGPT-5$3.875/MGPT-4.5$97.500/MGPT-4 Turbo Preview$16.000/MGPT-4$39.000/MGPT-4-32k$78.000/Mo3$19.000/Mo3-mini$2.090/Mo4-mini$2.090/Mo1$28.500/Mo1-mini$5.700/Mo1-preview$28.500/MGemini 3.5 Pro$5.000/MGemini 3.1 Pro$5.000/MGemini 3 Pro$5.000/MGemini 2.5 Pro$3.875/MGemini 1.5 Pro$2.375/MGemini 1.0 Ultra$12.000/MGemini 1.0 Pro$0.800/M
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OpenAI
OpenAIReasoning

o3-mini

Reasoning

Cheaper reasoning model in the o3 generation. Strong on STEM, lower latency than full o3.

o3-mini is a reasoning AI model from OpenAI. It costs $1.100 per million input tokens and $4.400 per million output tokens (blended $2.090/M), with a 200K-token context window.

Released Jan 2025Modalities textOfficial model page ↗Provider pricing ↗API docs ↗Compare with another model →Estimate monthly cost →
INPUT
$1.100/M
per million input tokens
OUTPUT
$4.400/M
per million output tokens
BLENDED 70/30
$2.090/M
default reference rate · how it's calculated →
CONTEXT
200K
200,000 tokens
What it's good at
  • Cheap reasoning
  • STEM-tuned
  • Lower latency than o3
Typical use cases
  • Reasoning at scale
  • STEM tutoring
  • Cost-sensitive code review
Benchmarks
vs. best public score
MMLU86%
Multitask academic knowledge across 57 subjects.
GPQA Diamond79%
Graduate-level science questions, "Google-proof".
MATH95%
High-school competition math problems.
HumanEval92%
Python function synthesis from docstrings.
SWE-bench Verified49%
Real GitHub issues solved end-to-end.
LMArena Elo1305 Elo
Crowd-sourced head-to-head preference Elo rating.
Hand-curated from each provider's published reports and public leaderboards. Methodology varies across sources — treat as directional rather than authoritative.
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Frequently asked questions

How much does o3-mini cost?

o3-mini costs $1.100 per million input tokens and $4.400 per million output tokens, for a blended reference rate of $2.090 per million tokens.

What is o3-mini's context window?

o3-mini supports up to 200K tokens of context (200,000 tokens).

What is o3-mini best for?

o3-mini is well suited to Cheap reasoning, STEM-tuned and Lower latency than o3.

Who makes o3-mini?

o3-mini is developed and served by OpenAI. It was released in Jan 2025.