How do their growth rates compare?

DeepSeek has a month-over-month growth rate of +4.3%; OnAPI has 0%.

How does pricing compare?

DeepSeek: Freemium. Free web and mobile chat app at chat.deepseek.com; pay-as-you-go OpenAI-compatible API with off-peak rates at $0.15/1M input ($0.003 cache hit) and $0.60/1M output for deepseek-flash (V4.1-Flash), and $0.66/1M input ($0.022 cache hit) and $1.98/1M output for deepseek-v4-pro (peak weekday UTC hours bill at 2x). OnAPI: Paid.

What are alternatives to DeepSeek and OnAPI?

Other tools in related categories include ChatGPT, Google Gemini, Claude, OpenAI Platform, Google AI Studio.

DeepSeek vs OnAPI — Traffic, Pricing & Feature Comparison

OpenAITools

DeepSeek vs OnAPI — Traffic, Pricing & Feature Comparison | OpenAITools.app

Side-by-Side Traffic & Specification Matrix

Dimension / Metric	DeepSeek	OnAPI
Official Domain	deepseek.com	onapi.ai
Pricing Model	Freemium	Paid
Monthly Visits	372.76M (372,761,591)	0 (0)
MoM Traffic Delta	+15.36M (+4.3%)	0 (0%)
Primary Market & Share	🇨🇳 China (50.5%)	🌐 Global (—)
Direct Visits / mo	291.59M	0
User Rating	3.8	5
Supported Platforms	Website	Website

DeepSeek

High-efficiency open-weight and hosted reasoning AI powered by DeepSeek-V4 and R1 at ultra-low token costs.

DeepSeek-V4 Hybrid Attention & 1M Context

Leverages a sparse Mixture-of-Experts architecture (49B active parameters out of 1.6T on V4-Pro) to process up to 1 million tokens with minimal latency and memory overhead.

Transparent Chain-of-Thought Reasoning

Pioneered by DeepSeek-R1 and integrated into V3.2 and V4 thinking modes, exposing step-by-step self-verification for complex math, logic, and code debugging.

Automatic Context Caching & Off-Peak API Pricing

Drops input token costs to $0.003/1M on Flash and $0.022/1M on V4-Pro for cache hits, with 50% lower rates during off-peak UTC hours.

Free Consumer Web & Mobile Assistant

Provides free access at chat.deepseek.com and on iOS/Android with document uploads, reasoning mode, and web search without paywalling core models.

Strengths & Pros

+Completely free consumer web and mobile app with deep reasoning and web search included
+Ultra-low API token rates ($0.15/$0.60 on Flash, $0.66/$1.98 on V4-Pro off-peak) with up to 98% savings on cached inputs
+Drop-in OpenAI API compatibility makes switching or routing between models effortless