tokevenGPTvsGPT
GPT 5.5 Pro 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 5.5 Pro
FlagshipGPT 6.1 Sol
FlagshipInput $/MTok
$30.00
$2.00
Output $/MTok
$180.00
$10.00
Cache discount
0% off
95% off
Context
1,050K
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 5.5 Pro
GPT 6.1 Sol
Guidance
When to use GPT 5.5 Pro vs GPT 6.1 Sol
Choose GPT 5.5 Pro when...
- -You need a larger context window (1,050K vs 922K)
- Similar performance; consider provider preference or ecosystem fit.
Choose GPT 6.1 Sol when...
- -Cost matters: 93% cheaper on input tokens
At scale
Cost at scale
Estimated cost assuming a seventy percent input and thirty percent output token split.
GPT 5.5 Pro
GPT 6.1 Sol
100K tokens
$7.50
$0.44Cheaper
1M tokens
$123.00
$7.30Cheaper
10M tokens
$1230.00
$73.00Cheaper
FAQ
When should I use GPT 5.5 Pro instead of GPT 6.1 Sol?
GPT 5.5 Pro 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 5.5 Pro?
Yes. GPT 6.1 Sol input costs $2.00/MTok vs $30.00/MTok for GPT 5.5 Pro, saving 93% on input.
What are the context window sizes for GPT 5.5 Pro and GPT 6.1 Sol?
GPT 5.5 Pro has a 1,050K 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 5.5 Pro 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.