tokevenGPTvsGPT
GPT 5.2 Pro vs o3
Side-by-side comparison of pricing, task quality, and projected cost at higher scale.
Pricing
Side-by-side pricing
GPT 5.2 Pro
Flagshipo3
Mid-tierInput $/MTok
$21.00
$2.00
Output $/MTok
$168.00
$8.00
Cache discount
0% off
75% off
Context
272K
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
GPT 5.2 Pro
o3
Guidance
When to use GPT 5.2 Pro vs o3
Choose GPT 5.2 Pro when...
- -You need a larger context window (272K vs 200K)
- Similar performance; consider provider preference or ecosystem fit.
Choose o3 when...
- -Cost matters: 90% cheaper on input tokens
At scale
Cost at scale
Estimated cost assuming a seventy percent input and thirty percent output token split.
GPT 5.2 Pro
o3
100K tokens
$6.51
$0.38Cheaper
1M tokens
$65.10
$3.80Cheaper
10M tokens
$651.00
$38.00Cheaper
FAQ
When should I use GPT 5.2 Pro instead of o3?
GPT 5.2 Pro and o3 perform similarly across all tracked tasks. Pick based on pricing and provider preference.
Is o3 cheaper than GPT 5.2 Pro?
Yes. o3 input costs $2.00/MTok vs $21.00/MTok for GPT 5.2 Pro, saving 90% on input.
What are the context window sizes for GPT 5.2 Pro and o3?
GPT 5.2 Pro has a 272K token context window. o3 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 GPT 5.2 Pro and o3 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.