OpenAI
o3-mini
CTX200K
Retired
58Quality
Reasoning · Tools
TextInput$1.10/M
TextOutput$4.40/M
Smaller o-series reasoner for economical coding, math, and planning tasks
PaidProprietary461/1044
OpenAI · Text line
o Mini
2 stages over 4 months, from o3-mini in Dec 2024 to o4-mini in Apr 2025.
Evolution chamber01 / 02
Ready to evolve
Every generation. A new possibility.
o3-mini · Dec 20242 stages, from o3-mini (Dec 2024) to o4-mini (Apr 2025). Press Evolve to watch each step.
How it grew
Context window
Max output
Output priceper 1M tokens, lower is better
Every stage
v3 Stage 1
OpenAIo3-mini
CTX200KRetired58QualityReasoning · ToolsTextInput$1.10/MTextOutput$4.40/MSmaller o-series reasoner for economical coding, math, and planning tasks
PaidProprietary461/1044v4 Stage 2
OpenAIo4-mini
CTX200KRetired69QualityReasoning · Vision · ToolsTextImageInput$1.10/MTextOutput$4.40/MFast o-series model for compact reasoning, coding, and tool use
PaidProprietary547/1044