tokevenGPTvsGPT
GPT 3.5 Turbo vs GPT 4o
Side-by-side comparison of pricing, task quality, and projected cost at higher scale.
Pricing
Side-by-side pricing
GPT 3.5 Turbo
Fast / BudgetGPT 4o
Mid-tierInput $/MTok
$0.50
$2.50
Output $/MTok
$1.50
$10.00
Cache discount
0% off
50% off
Context
16.385K
128K
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 3.5 Turbo
GPT 4o
Guidance
When to use GPT 3.5 Turbo vs GPT 4o
Choose GPT 3.5 Turbo when...
- -Cost matters: 80% cheaper on input tokens
Choose GPT 4o when...
- -You need a larger context window (128K vs 16.385K)
- 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 3.5 Turbo
GPT 4o
100K tokens
$0.08Cheaper
$0.47
1M tokens
$0.80Cheaper
$4.75
10M tokens
$8.00Cheaper
$47.50
FAQ
When should I use GPT 3.5 Turbo instead of GPT 4o?
GPT 3.5 Turbo and GPT 4o perform similarly across all tracked tasks. Pick based on pricing and provider preference.
Is GPT 4o cheaper than GPT 3.5 Turbo?
GPT 4o input costs $2.50/MTok, which is 400% more than GPT 3.5 Turbo at $0.50/MTok.
What are the context window sizes for GPT 3.5 Turbo and GPT 4o?
GPT 3.5 Turbo has a 16.385K token context window. GPT 4o has a 128K 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 3.5 Turbo and GPT 4o 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.