Model comparison Synced Mar 10, 2026

DeepSeek: DeepSeek V3.1 Terminus (exacto) vs OpenAI: GPT-5 Nano

Side-by-side comparison of DeepSeek: DeepSeek V3.1 Terminus (exacto) and OpenAI: GPT-5 Nano. Compare pricing, context window, capabilities, and find out which is better for your workflow.

Verdict

strong confidence

OpenAI: GPT-5 Nano leads overall

OpenAI: GPT-5 Nano leads in price and context window and capabilities and max output, making it the stronger choice for most workflows. DeepSeek: DeepSeek V3.1 Terminus (exacto) remains a solid alternative depending on your specific needs.

Best for with DeepSeek: DeepSeek V3.1 Terminus (exacto)

No clear advantages identified

Best for with OpenAI: GPT-5 Nano

Budget-conscious workflowsLong document processingMulti-modal tasksLong-form content generation

Side-by-side

Technical specifications

	DeepSeek: DeepSeek V3.1 Terminus (exacto)	OpenAI: GPT-5 Nano
Provider	DeepSeek	OpenAI
Input price	$0.21/M	$0.05/M
Output price	$0.79/M	$0.40/M
Context window	164K	400K
Max output	N/A	128K
Capabilities	Tool useReasoning	Tool useVisionReasoning
Released	Sep 22, 2025	Aug 7, 2025

View DeepSeek: DeepSeek V3.1 Terminus (exacto) profile View OpenAI: GPT-5 Nano profile

Scoring breakdown