The most powerful reasoning model available, but its extreme cost means it's only justified for the hardest problems where no other model will do.
92
Coding
62
Writing
95
Research
0
Images
2
Value
80
Long Context
Use this when
Solving the hardest math, science, and engineering problems where accuracy is non-negotiable and cost is secondary.
Skip this if
You need fast responses, are working on everyday tasks like drafting emails or summarizing documents, or have any budget sensitivity at all.
Pricing
$75.00/1M in
$300.00/1M out
↓50%since May 2026
Context
200k tokens
Speed
Deliberate
o1-pro is available only via the OpenAI API and ChatGPT Pro subscription ($200/month). It does not support streaming and has longer latency than any other OpenAI model. Not suitable for high-volume workloads.
OpenAI's latest agentic flagship for coding, research, computer-use workflows, and long multi-step knowledge work.
Verdict
Best OpenAI flagship for agentic coding, research, and computer-use work.
Quality score
94%
Pricing
$2.50/1M in
$15.00/1M out
Speed
Balanced
Best for agentic coding, computer-use workflows, and complex research tasks
Context
1M tokens
Ranked from public benchmark and pricing data verified April 26, 2026: SWE-Bench Pro 58.6%, Terminal-Bench 2.0 82.7%, $5/$30 per 1M tokens, 1M API context.
AgenticCodingComputer useLong contextPremium
Best for
Agentic coding, computer-use workflows, and complex research tasks
The flagship of OpenAI's GPT-5.6 family — its most capable reasoning and agentic-coding model, with an 'ultra' mode that spawns sub-agents for long autonomous workflows.
Verdict
Best OpenAI flagship — leads terminal coding and agentic browsing.
Quality score
96%
Pricing
$2.50/1M in
$15.00/1M out
Speed
Deliberate
Best for frontier agentic coding, deep research, and hardest reasoning tasks
Context
1.1M tokens
First frontier model family to clear a customer-by-customer US government review: limited preview June 26, full public release July 9, 2026. Pricing $5/$30 ($10/$45 above 272K context). Knowledge cutoff Feb 16, 2026.
AgenticReasoningFlagshipSub-agentsPremium
Best for
Frontier agentic coding, deep research, and hardest reasoning tasks
The balanced mid-tier of the GPT-5.6 family — GPT-5.5-class capability at a fraction of the price, built for production workloads at scale.
Verdict
Best OpenAI value — near-flagship capability at 60% off.
Quality score
93%
Pricing
$1.00/1M in
$6.00/1M out
Speed
Balanced
Best for high-volume production and enterprise workloads
Context
1.1M tokens
Launched at $2.50/$15, cut to $2/$12 on July 30, 2026. Long-context above 272K: $4/$18. Part of the government-reviewed GPT-5.6 family, fully public July 9, 2026.
OpenAI: o1-pro (OpenAI) is now indexed. The most powerful reasoning model available, but its extreme cost means it's only justified for the hardest problems where no other model will do.
OpenAI: o1-pro is best for solving the hardest math, science, and engineering problems where accuracy is non-negotiable and cost is secondary.. It is a strong fit when that workflow matters more than the tradeoffs around premium pricing and deliberate speed.
When should I avoid OpenAI: o1-pro?
You need fast responses, are working on everyday tasks like drafting emails or summarizing documents, or have any budget sensitivity at all.
What is a cheaper alternative to OpenAI: o1-pro?
Mistral: Mistral Nemo is the lower-cost option to compare first when you want a similar workflow fit with less token spend.
What is a faster alternative to OpenAI: o1-pro?
GPT-5.5 is the better pick when response time matters more than maximum depth or premium quality.
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