Recommendation (short)
Use an LLM to create a 30–90s script, a high-quality TTS for voice, and an “article-to-video” auto-editor that picks matching clips/images and captions. Best balance of cost, voice quality and low manual editing: ChatGPT (for script/summarize) + a mid-tier TTS (ElevenLabs or Play.ht) + an auto-video tool (Pictory / InVideo / Kapwing / Descript).

Why this stack
- ChatGPT reliably condenses long blog posts into short, punchy scripts and hook variants fast.
- A dedicated TTS gives natural voices without recording and re-takes.
- Auto-editors create scenes, add captions and stock media automatically so you rarely open a timeline.

Monthly cost estimates for 20 short videos (approximate ranges — prices change):
- Budget (minimal spend, accept basic voice and templates): $30–60/month total → $1.50–3.00 per video
- ChatGPT: $0–20 (use free or Plus $20)
- TTS (basic plan): $5–15
- Auto-video tool (starter plan): $19–25

- Balanced (better voice, faster tweaks): $60–90/month → $3–4.50 per video
- ChatGPT: $20
- TTS (higher quality): $15–25
- Auto-video (mid plan with more minutes/exports): $25–45

- Higher-end (avatar/high-res assets, minimal manual work): $100–200/month → $5–10 per video
- Add avatar tools (Synthesia), premium stock, or higher export limits

Decision criteria (pick what matters most)
- Voice naturalness: prioritize a better TTS plan.
- Visual polish: prioritize a higher-tier auto-video tool or premium stock.
- Time-to-publish / low editing: prioritize “article-to-video” features (automatic scenes, captioning).
- Budget: choose fewer premium extras or batch scripts to reduce per-video cost.
- Team size / workflow: multiple seats or API access increases costs but speeds production.

Practical step-by-step checklist (repeatable weekly)
1. Input: paste blog into ChatGPT and ask for 3 script lengths (15s, 30s, 60s) + 3 hooks and suggested scene cuts.
2. Pick the best script and choose a TTS voice preset.
3. Paste script into auto-video tool’s “article-to-video” or text-to-video flow and let it populate scenes/stock.
4. Auto-generate captions and apply your brand overlay/template.
5. Quick QC: listen for mispronunciations (2–3 min fix) and tweak timing.
6. Render batch (export 20 videos overnight).
7. Upload and add metadata/scheduling.

Best-for / Avoid-if
- Best-for: solo creators or small teams that publish weekly and need low manual editing.
- Avoid-if: you require heavy custom B-roll, custom actor footage, or cinematic edits — then budget more for manual editing/time.

Recommendation (final)
Start with the Balanced stack: ChatGPT (for scripts) + a good TTS plan + a mid-tier auto-video tool. Expect ~ $60–90/month for 20 polished shorts with minimal manual editing. Scale up (better TTS, premium stock, or avatar tools) if you need higher perceived production value.

Note: prices are approximate and change; choose a 1-month trial on tools to validate voice/style before committing to a plan.

Compare ChatGPT and Gemini