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GPT 4o vs GPT 6.1 Sol
Side-by-side comparison of pricing, task quality, and projected cost at higher scale.
Pricing
Side-by-side pricing
GPT 4o
Mid-tierGPT 6.1 Sol
FlagshipInput $/MTok
$2.50
$2.00
Output $/MTok
$10.00
$10.00
Cache discount
50% off
95% off
Context
128K
922K
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 4o
GPT 6.1 Sol
Guidance
When to use GPT 4o vs GPT 6.1 Sol
Choose GPT 4o when...
- Similar performance; consider provider preference or ecosystem fit.
Choose GPT 6.1 Sol when...
- -Cost matters: 20% cheaper on input tokens
- -You need a larger context window (922K vs 128K)
At scale
Cost at scale
Estimated cost assuming a seventy percent input and thirty percent output token split.
GPT 4o
GPT 6.1 Sol
100K tokens
$0.47
$0.44Cheaper
1M tokens
$4.75Cheaper
$7.30
10M tokens
$47.50Cheaper
$73.00
FAQ
When should I use GPT 4o instead of GPT 6.1 Sol?
GPT 4o and GPT 6.1 Sol perform similarly across all tracked tasks. Pick based on pricing and provider preference.
Is GPT 6.1 Sol cheaper than GPT 4o?
Yes. GPT 6.1 Sol input costs $2.00/MTok vs $2.50/MTok for GPT 4o, saving 20% on input.
What are the context window sizes for GPT 4o and GPT 6.1 Sol?
GPT 4o has a 128K token context window. GPT 6.1 Sol has a 922K 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 4o and GPT 6.1 Sol 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.