tokevenGPTvsGPT
GPT 5.5 vs GPT 5.6 Sol
Side-by-side comparison of pricing, task quality, and projected cost at higher scale.
Pricing
Side-by-side pricing
GPT 5.5
FlagshipGPT 5.6 Sol
FlagshipInput $/MTok
$5.00
$4.00
Output $/MTok
$30.00
$20.00
Cache discount
90% off
90% off
Context
1,050K
1,050K
Quality
Task confidence comparison
Confidence score from zero to one hundred by task type, where higher is better.
Code Generation
91
vs
94
Code Review
90
vs
92
Summarization
89
vs
90
Q&A
90
vs
91
Extraction
87
vs
88
Reasoning
95
vs
96
Classification
85
vs
86
Creative Writing
91
vs
92
GPT 5.5
GPT 5.6 Sol
Guidance
When to use GPT 5.5 vs GPT 5.6 Sol
Choose GPT 5.5 when...
- Similar performance; consider provider preference or ecosystem fit.
Choose GPT 5.6 Sol when...
- -You need strong reasoning (confidence 96 vs 95)
- -You need strong code generation (confidence 94 vs 91)
- -You need strong code review (confidence 92 vs 90)
- -You need strong creative writing (confidence 92 vs 91)
- -Cost matters: 20% 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
GPT 5.6 Sol
100K tokens
$1.25
$0.88Cheaper
1M tokens
$20.50
$14.60Cheaper
10M tokens
$205.00
$146.00Cheaper
FAQ
When should I use GPT 5.5 instead of GPT 5.6 Sol?
GPT 5.5 and GPT 5.6 Sol perform similarly across all tracked tasks. Pick based on pricing and provider preference.
Is GPT 5.6 Sol cheaper than GPT 5.5?
Yes. GPT 5.6 Sol input costs $4.00/MTok vs $5.00/MTok for GPT 5.5, saving 20% on input.
What are the context window sizes for GPT 5.5 and GPT 5.6 Sol?
GPT 5.5 has a 1,050K token context window. GPT 5.6 Sol has a 1,050K 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 and GPT 5.6 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.