AI stack for Substack writers (2026)
Substack growth is research + writing + distribution. AI handles the research depth and distribution work, freeing you to write the actual essays that earn subscribers.
The stack, tool by tool
Each pick has been hand-checked for fit with the Substack writers use case. Click any tool for our full review.
- 1AI WritingClaude
Anthropic's long-context AI for serious writing and reasoning.
Anthropic's long-context AI for serious writing and reasoning.
- 2AI WritingPerplexity
AI search engine with real-time citations and follow-ups.
AI search engine with real-time citations and follow-ups.
- 4AI MarketingBuffer
Social scheduling with AI assist for captions and ideation.
Social scheduling with AI assist for captions and ideation.
- 5AI VideoCaptions
AI video editor for short-form creators — auto-captions, B-roll.
AI video editor for short-form creators — auto-captions, B-roll.
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Frequently asked questions
How does ToolMango pick the ai tools for substack writers?
Every tool gets an editorial ROI Score from 0–100 based on cost, time saved per week, output quality in our hands-on tests, free-tier generosity, and category fit. We rank the highest-scoring tools first. Scores are recomputed weekly.
Do these tools work for someone just starting out?
Most of these picks have free tiers — start with those, upgrade only the one or two tools that prove valuable in your workflow. The Stack Builder also lets you toggle between Free / Balanced / Premium budget paths.
Are these affiliate links?
Some are. ToolMango may earn a commission when you click through and purchase, at no extra cost to you. The ranking is editorial — affiliate revenue keeps the site free but never decides which tools rank.