About
GPT-5.6 Terra is a balanced model in OpenAI's GPT-5.6 series, positioned between the flagship Sol tier and the cost-efficient Luna tier. It is suited for everyday coding, reasoning, and agentic...
Related Models
Pricing
Input
$2.50
per 1M tokens
Output
$15.00
per 1M tokens
Blended
$5.63
per 1M tokens
Cheaper than 11% of models. Median price is $0.66/1M tokens.
Cost Calculator
Tokens per day1M
100K100M
Daily
$5.63
Monthly
$168.75
vs. Similar Models
OpenAI: GPT-5.5Q:-0.2
$11.25+100%
Anthropic: Claude Opus 4.8Q:+0.7
$10.00+78%
GPT-5.6 Sol (high)Q:+0.9
$11.25+100%
xAI: Grok 4.5Q:-1.2
$3.00-47%
Performance
167
tokens/sec
Faster than 78% of models
98.05
seconds
Faster than 1% of models
98.05
seconds
Faster than 1% of models
Market Median
99 tok/s
68% faster
Median TTFT
1.11s
8757% slower
Throughput/Dollar
30
tok/s per $/1M
Speed Comparison
Llama 3.1 Instruct 8B
167 tok/s+0%
GPT-5.4 nano (Non-Reasoning)
168 tok/s+1%
GPT-5.4 mini (Non-Reasoning)
169 tok/s+1%
Context Window
1.1M
tokens
Larger than 96% of models
Max Output
128K
tokens
12% of context
Benchmarks
MMLU-ProNot evaluated
GPQA Diamond
92.5%
HLE
41.8%
LiveCodeBenchNot evaluated
SciCode
53.9%
TerminalBench Hard
57.6%
MATH-500Not evaluated
AIMENot evaluated
AIME 2025Not evaluated
IFBench
71.2%
Long Context Recall
74.0%
Tau2
86.3%
Market AverageTop Score