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GPT 5.4 vs GPT 6 Sol
Side-by-side comparison of pricing, task quality, and projected cost at higher scale.
Pricing
Side-by-side pricing
GPT 5.4
Mid-tierGPT 6 Sol
FlagshipInput $/MTok
$2.50
$2.00
Output $/MTok
$15.00
$10.00
Cache discount
90% off
90% 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
84
vs
0
Code Review
82
vs
0
Summarization
91
vs
0
Q&A
91
vs
0
Extraction
89
vs
0
Reasoning
80
vs
0
Classification
88
vs
0
Creative Writing
78
vs
0
GPT 5.4
GPT 6 Sol
Guidance
When to use GPT 5.4 vs GPT 6 Sol
Choose GPT 5.4 when...
- -You need a larger context window (1,050K vs 922K)
- Similar performance; consider provider preference or ecosystem fit.
Choose GPT 6 Sol when...
- -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 5.4
GPT 6 Sol
100K tokens
$0.63
$0.44Cheaper
1M tokens
$10.25
$7.30Cheaper
10M tokens
$102.50
$73.00Cheaper
FAQ
When should I use GPT 5.4 instead of GPT 6 Sol?
GPT 5.4 and GPT 6 Sol perform similarly across all tracked tasks. Pick based on pricing and provider preference.
Is GPT 6 Sol cheaper than GPT 5.4?
Yes. GPT 6 Sol input costs $2.00/MTok vs $2.50/MTok for GPT 5.4, saving 20% on input.
What are the context window sizes for GPT 5.4 and GPT 6 Sol?
GPT 5.4 has a 1,050K token context window. GPT 6 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 5.4 and GPT 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.