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GPT-5.1 is the latest frontier-grade model in the GPT-5 series, offering stronger general-purpose reasoning, improved instruction adherence, and a more natural conversational style compared to GPT-5. It uses adaptive reasoning...
Input
$1.25
per 1M tokens
Output
$10.00
per 1M tokens
Blended
$3.44
per 1M tokens
Cheaper than 18% of models. Median price is $0.56/1M tokens.
Daily
$3.44
Monthly
$103.13
134
tokens/sec
Faster than 72% of models
20.10
seconds
Faster than 7% of models
20.10
seconds
Faster than 25% of models
Market Median
86 tok/s
57% faster
Median TTFT
1.07s
1775% slower
Throughput/Dollar
39
tok/s per $/1M
Speed Comparison
Context Window
400K
tokens
Larger than 79% of models
Max Output
128K
tokens
32% of context
Quality Index
47.7
33rd of 507
Top 7%
Coding Index
44.7
27th of 417
Top 6%
Math Index
94.0
14th of 269
Top 5%
Price/1M
$3.44
513th cheapest
514% above median
Top 82%
Speed
134 tok/s
Top 28%
TTFT
20.10s
Context Window
400K
68th largest
Top 21%