tokevenGPTvsGPT
GPT 5.4 vs GPT 5.6 Terra
Side-by-side comparison of pricing, task quality, and projected cost at higher scale.
Pricing
Side-by-side pricing
GPT 5.4
Mid-tierGPT 5.6 Terra
Mid-tierInput $/MTok
$2.50
$2.00
Output $/MTok
$15.00
$12.00
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
84
vs
86
Code Review
82
vs
84
Summarization
91
vs
92
Q&A
91
vs
92
Extraction
89
vs
90
Reasoning
80
vs
82
Classification
88
vs
89
Creative Writing
78
vs
80
GPT 5.4
GPT 5.6 Terra
Guidance
When to use GPT 5.4 vs GPT 5.6 Terra
Choose GPT 5.4 when...
- Similar performance; consider provider preference or ecosystem fit.
Choose GPT 5.6 Terra when...
- -You need strong summarization (confidence 92 vs 91)
- -You need strong q&a (confidence 92 vs 91)
- -You need strong extraction (confidence 90 vs 89)
- -You need strong classification (confidence 89 vs 88)
- -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 5.6 Terra
100K tokens
$0.63
$0.50Cheaper
1M tokens
$10.25
$8.20Cheaper
10M tokens
$102.50
$82.00Cheaper
FAQ
When should I use GPT 5.4 instead of GPT 5.6 Terra?
GPT 5.4 and GPT 5.6 Terra perform similarly across all tracked tasks. Pick based on pricing and provider preference.
Is GPT 5.6 Terra cheaper than GPT 5.4?
Yes. GPT 5.6 Terra 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 5.6 Terra?
GPT 5.4 has a 1,050K token context window. GPT 5.6 Terra 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 5.4 and GPT 5.6 Terra 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.