Can you recommend a content generator for ad copy generation with strong tone control?

Yes — if you want ad copy generation with strong tone control, I’d recommend choosing a tool that supports:

• brand voice / style guides
• tone sliders or tone presets
• few-shot examples
• structured prompting
• approval / editing workflow

Good options

1) Jasper

• Very strong for marketing copy
• Good brand voice and tone controls
• Built for teams making ads, landing pages, and campaign copy
• Best if you want a polished, marketing-focused UI

2) Copy.ai

• Strong for ad copy and sales/marketing workflows
• Good tone customization and reusable brand instructions
• Easier to use for fast iteration
• Best if you want lots of template-driven ad generation

3) ChatGPT / OpenAI API

• Best if you want the most flexible tone control
• You can precisely define voice, audience, constraints, and examples
• With the API, you can build a custom ad generator that enforces tone very well
• Best if you want to integrate into your own app or workflow

4) Writer

• Good for enterprise brand consistency
• Strong governance and style control
• Best for larger teams with strict brand requirements

My recommendation

• For easiest out-of-the-box ad copy: Jasper
• For custom, high-precision tone control: OpenAI API
• For team workflow and brand consistency: Writer

If you want, I can also recommend:

1. the best tool by budget,
2. the best API for building your own ad generator, or
3. a prompt template for getting tightly controlled ad copy.