LLM Comparison

DeepSeek V3.1 Terminus vs Trinity Large Thinking

Side-by-side specs, pricing & capabilities · Updated April 2026

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2/6 models

Same tier:

	D DeepSeek V3.1 Terminus	T Trinity Large Thinking
Organization	DeepSeek	Arcee AI
OpenTools Score	64 128
Family	DeepSeek	Trinity
Status	Current	Current
Release Date	Sep 2025	Apr 2026
Context Window	164K tokens	262K tokens
Input Price	$0.21/M tokens	$0.22/M tokens
Output Price	$0.79/M tokens	$0.85/M tokens
Pricing Notes	Cache read: $0.1300/M tokens	Cache read: $0.0600/M tokens
Capabilities	textcode	textcodeextended-thinking
Max Output	—	262K tokens
API Identifier	`deepseek/deepseek-v3.1-terminus`	`arcee-ai/trinity-large-thinking`
Benchmarks
MMLU	87.1	—
HumanEval	89.2	—
MATH	90.2	—
	View DeepSeek V3.1 Terminus	View Trinity Large Thinking

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Input tokens / month

Output tokens / month

Model	Input	Output	Total / mo	vs Best
DeepSeek V3.1 TerminusCheapest	$0.21	$0.40	$0.61	—
Trinity Large Thinking	$0.22	$0.43	$0.65	+7%

DeepSeek

DeepSeek V3.1 Terminus

DeepSeek V3.1 Terminus is a large language model from DeepSeek. Supports up to 163,840 token context window. Achieves 87.1% on MMLU. Available from $0.21/M input tokens.

Arcee AI

Trinity Large Thinking

Trinity Large Thinking is a large language model from Arcee AI. Supports up to 262,144 token context window. Available from $0.22/M input tokens.