# DeepSeek

> Frontier-grade reasoning at 1/10th the cost

Source: https://aistack.sh/tool/deepseek
Category: LLMs
Site: https://chat.deepseek.com
Status: active
Last verified by a human: 2026-05-05

DeepSeek-V3 / R1 deliver near-frontier reasoning and code at a fraction of OpenAI / Anthropic API rates. Free chat tier, very cheap API. The default 'cheap LLM' for cost-sensitive automations.

## Pricing

As published on the tool page: Free chat · V4 API ~$0.30/$0.50 per M tokens (input/output)

## Alternatives

- Claude — https://aistack.sh/tool/claude
- ChatGPT — https://aistack.sh/tool/chatgpt
- Gemini — https://aistack.sh/tool/gemini
- Grok — https://aistack.sh/tool/grok

## Head-to-head comparisons

- [ChatGPT vs DeepSeek](https://aistack.sh/compare/chatgpt-vs-deepseek) (markdown: https://aistack.sh/compare/chatgpt-vs-deepseek/llms.txt)
- [Claude vs DeepSeek](https://aistack.sh/compare/claude-vs-deepseek) (markdown: https://aistack.sh/compare/claude-vs-deepseek/llms.txt)
- [DeepSeek vs Gemini](https://aistack.sh/compare/deepseek-vs-gemini) (markdown: https://aistack.sh/compare/deepseek-vs-gemini/llms.txt)
- [DeepSeek vs Grok](https://aistack.sh/compare/deepseek-vs-grok) (markdown: https://aistack.sh/compare/deepseek-vs-grok/llms.txt)
- [DeepSeek vs Qwen](https://aistack.sh/compare/deepseek-vs-qwen) (markdown: https://aistack.sh/compare/deepseek-vs-qwen/llms.txt)

## Used in 1 tested stack

- [Cheap bulk LLM automation](https://aistack.sh/stack/cheap-bulk-llm) — Production volume calls, $140/mo

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From aistack.sh. Last updated 2026-05-05.