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Description
DeepSeek V3.1 Terminus is a 671-billion-parameter mixture-of-experts language model with 37 billion activated parameters and a 131,072-token context window.
OpenAI's frontier model for complex professional workloads. 1M token context, text + image input, native computer use.
I/O price /1M
$0.27/$1.00
$5.00/$30.00
Input /1M
$0.27
$5.00
Output /1M
$1.00
$30.00
Cached in /1M
$0.135
$0.5
Context
131K
1M
Δ input since launch
decreased 0.0%
—
Δ output since launch
increased 5.3%
—
Released
Sep 2025
Apr 2026
Status
—
—
Provider
DeepSeek
OpenAI