Is DeepSeek V3.1 Terminus or GPT-3.5 Turbo Instruct cheaper?

DeepSeek V3.1 Terminus is cheaper on output tokens ($1.00 vs $2.00 per 1M).

Which has the larger context window, DeepSeek V3.1 Terminus or GPT-3.5 Turbo Instruct?

DeepSeek V3.1 Terminus has the larger context window (131K tokens).

DeepSeek V3.1 Terminus vs GPT-3.5 Turbo Instruct

DeepSeek V3.1 Terminus is cheaper on output tokens, while DeepSeek V3.1 Terminus offers a larger context window. Choose DeepSeek V3.1 Terminus or GPT-3.5 Turbo Instruct based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	DeepSeek V3.1 Terminus	GPT-3.5 Turbo Instruct
Provider	Vercel AI Gateway	Vercel AI Gateway
Input / 1M tokens	$0.27	$1.50
Output / 1M tokens	$1.00	$2.00
Context window	131K	8K
Parameters	—	20B
Open weights	Yes	No
Released	Sep 2025	Sep 2023

DeepSeek V3.1 Terminus details →GPT-3.5 Turbo Instruct details →

FAQ

Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.