Newsletter Writer
Consistent brand voice, every week
Generate weekly or monthly newsletter issues from a content brief, recent blog posts, or curated news links. The model maintains consistent voice, writes compelling subject lines, and structures issues with hooks, main content, and strong CTAs.
GPT-6.1 Sol
for 300K tokens a month · 30% input / 70% output
Why this model
For this workload — 300K tokens a month, 30% of them input — it comes to about $2.3 a month, the lowest of the models suggested here.
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Implementation tips
- 1
Build a 'newsletter memory': include the last 3 issue summaries and open-rate data in the prompt — the model avoids repeating topics and can reference prior issues naturally.
- 2
Generate 5 subject line variants for every issue and score them for curiosity, clarity, and urgency — the best-performing subject lines often differ dramatically from the obvious first choice.
- 3
Ask the model to write the 'preview text' (the 80-character snippet after the subject) separately — it is often overlooked but contributes significantly to open rates.