DeepSeek: DeepSeek V3.1 Terminus (deepseek/deepseek-v3.1-terminus) is a chat model from openrouter with a 163.8K-token context window; open-weight; capabilities tools, reasoning; input text; output text.
163.8KContext
32.8KMax output
$0.27$ / 1M in
13.9Intelligence
Pricing
Input
$0.27 / 1M tokens
Output
$1 / 1M tokens
Currency
USD
Note
Indicative US list price — verify with the vendor.
Indicative US list price — a reference only, verify with the vendor. Source: openrouter. Last verified 2026-07-24.
Benchmarks
Intelligence index
13.9
Math
53.7
Cited from a public third-party leaderboard — a reference, verify at the source. Source: Artificial Analysis. Last verified 2026-09-26.