OpenAI
o1-pro
CTX200K
Retired
Reasoning · Vision · Tools
TextImageInput$150/M
TextOutput$600/M
O-series reasoning model for hard analysis, math, coding, and planning
PaidProprietary517/1044
OpenAI · Text line
o Pro
2 stages over 3 months, from o1-pro in Mar 2025 to o3-pro in Jun 2025.
Evolution chamber01 / 02
Ready to evolve
Every generation. A new possibility.
o1-pro · Mar 20252 stages, from o1-pro (Mar 2025) to o3-pro (Jun 2025). Press Evolve to watch each step.
How it grew
Context window
Max output
Output priceper 1M tokens, lower is better
Every stage
v1 Stage 1
OpenAIo1-pro
CTX200KRetiredReasoning · Vision · ToolsTextImageInput$150/MTextOutput$600/MO-series reasoning model for hard analysis, math, coding, and planning
PaidProprietary517/1044v3 Stage 2
OpenAIo3-pro
CTX200K76QualityReasoning · Vision · ToolsTextImageInput$20/MTextOutput$80/MHigh-effort o3 tier for difficult technical reasoning and careful answers
PaidProprietary586/1044