DeepSeek is a Chinese AI lab that releases open-weight models alongside a free chat app and one of the cheapest developer APIs available. It competes with frontier models on coding and reasoning while costing a fraction to run at scale, and the weights are open so you can self-host.
Use the fast model for cheap, high-volume work and the pro model for the hardest reasoning and coding. Reuse a common prompt prefix so repeated calls hit the cache and cut input cost sharply. You can invoke a thinking mode for problems that need visible step-by-step work.
Cost-sensitive, high-volume API work. Coding and step-by-step reasoning. Self-hosting, since the model weights are openly released.
Very large context with long output limits, plus a thinking mode that shows its reasoning. As a China-based model it restricts some politically sensitive topics. Weights are open, so you can self-host instead of using the hosted API.
Reuse a fixed system prefix to trigger cache-hit pricing. Pick the flash model for volume, the pro model for hard problems. Expect content limits on politically sensitive topics.
Free consumer chat app. The API is usage-based and among the lowest priced of any frontier-class model, with a large discount for cached input.
Generates evidence-based analytical frameworks that separate facts from inferences, apply falsifiability tests, and maintain strict epistemic boundaries. Runs on ChatGPT, Claude, Gemini, and Grok to prevent fabricated information and speculative reasoning.
Generates 10 detailed video concepts optimized for TikTok, Instagram Reels, and YouTube Shorts algorithms, each with 3-second hooks, organic product placement, and verbal CTAs. Runs on ChatGPT, Claude, Gemini, and Grok.
Generates a personalized 30-day AI adoption roadmap with role-specific automation assessments, daily practice challenges, tool configurations, and five copy-paste power prompts designed to save 2+ hours each. Runs on ChatGPT, Claude, Gemini, or Grok.
Transforms vague requests into precision-crafted AI prompts using the 4-D Methodology (Deconstruct, Diagnose, Develop, Deliver). Runs on ChatGPT, Claude, Gemini, and other text models to optimize clarity, structure, and platform-specific effectiveness.
Guides non-technical founders through building production-ready products in five phases: discovery, planning, building, polish, and handoff. Runs on ChatGPT, Claude, Gemini, and Grok.
Builds a four-stage marketing funnel (Awareness → Consideration → Decision → Action) that maps seven touchpoints, retargeting logic, and optimization actions across your digital ecosystem. Runs on ChatGPT, Claude, Gemini, and Grok.