tokevenGPTvsGPT
o1 vs o3 Pro
Side-by-side comparison of pricing, task quality, and projected cost at higher scale.
Pricing
Side-by-side pricing
o1
Flagshipo3 Pro
FlagshipInput $/MTok
$15.00
$20.00
Output $/MTok
$60.00
$80.00
Cache discount
50% off
0% off
Context
200K
200K
Quality
Task confidence comparison
Confidence score from zero to one hundred by task type, where higher is better.
Code Generation
0
vs
0
Code Review
0
vs
0
Summarization
0
vs
0
Q&A
0
vs
0
Extraction
0
vs
0
Reasoning
0
vs
0
Classification
0
vs
0
Creative Writing
0
vs
0
o1
o3 Pro
Guidance
When to use o1 vs o3 Pro
Choose o1 when...
- -Cost matters: 25% cheaper on input tokens
Choose o3 Pro when...
- Similar performance; consider provider preference or ecosystem fit.
At scale
Cost at scale
Estimated cost assuming a seventy percent input and thirty percent output token split.
o1
o3 Pro
100K tokens
$2.85Cheaper
$3.80
1M tokens
$28.50Cheaper
$38.00
10M tokens
$285.00Cheaper
$380.00
FAQ
When should I use o1 instead of o3 Pro?
o1 and o3 Pro perform similarly across all tracked tasks. Pick based on pricing and provider preference.
Is o3 Pro cheaper than o1?
o3 Pro input costs $20.00/MTok, which is 33% more than o1 at $15.00/MTok.
What are the context window sizes for o1 and o3 Pro?
o1 has a 200K token context window. o3 Pro has a 200K token context window.
Go deeper on either model
Per-call cost calculators, provider lineups, and price history for both models on this page.
Other comparisons
How o1 and o3 Pro stack up against the rest of the field.
Track your real costs
Comparisons show estimated costs at list price. The dashboard reveals your real spend and savings.