tokevenGPTvsGPT
GPT 5 Pro vs o1
Side-by-side comparison of pricing, task quality, and projected cost at higher scale.
Pricing
Side-by-side pricing
GPT 5 Pro
Flagshipo1
FlagshipInput $/MTok
$15.00
$15.00
Output $/MTok
$120.00
$60.00
Cache discount
0% off
50% off
Context
400K
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 Pro
o1
Guidance
When to use GPT 5 Pro vs o1
Choose GPT 5 Pro when...
- -You need a larger context window (400K vs 200K)
- Similar performance; consider provider preference or ecosystem fit.
Choose o1 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.
GPT 5 Pro
o1
100K tokens
$4.65
$2.85Cheaper
1M tokens
$46.50
$28.50Cheaper
10M tokens
$465.00
$285.00Cheaper
FAQ
When should I use GPT 5 Pro instead of o1?
GPT 5 Pro and o1 perform similarly across all tracked tasks. Pick based on pricing and provider preference.
Is o1 cheaper than GPT 5 Pro?
Both models have the same input pricing at $15.00/MTok. Compare output pricing: $120.00 vs $60.00/MTok.
What are the context window sizes for GPT 5 Pro and o1?
GPT 5 Pro has a 400K token context window. o1 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 Pro and o1 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.