Benchmarks
The public ChatGPT ads numbers, without the hype.
A maintained benchmark page for public ChatGPT ads numbers: CTR, conversion, ROAS, CPC guidance, spend floors and what each source actually measured.
- Purpose
- Citation page
- Use
- Planning and caveats
- Updated
- September 2026
Read this before using the numbers
ChatGPT ads benchmarks are early, fragmented, and easy to misuse. This page keeps the public numbers in one place and labels what each number actually measured. Treat them as planning constraints and directional signals, not guarantees.
For the deeper read, start with Do ChatGPT ads work? and How to measure ChatGPT ads.
Public benchmark table
| Metric | Public signal | How to use it |
|---|---|---|
| CTR | 0.68% to 0.91% public reported range | Directional only; reports differ by sample and placement context |
| Conversion quality | 1.5x higher conversion from LLM-referred users | Referral quality signal, not a direct ad benchmark |
| CPC start | $3 to $5 recommended starting CPC | Platform guidance cited in campaign setup research |
| Daily spend floor | $25 minimum daily spend per campaign | Useful for budget planning, not a performance benchmark |
| ROAS | 1.49x reported case signal | Single public case; use as anecdote, not forecast |
What to benchmark instead
For B2B, the useful comparison is not only CTR. Track whether ChatGPT-sourced traffic converts at a higher rate than colder channels, whether leads match your target accounts, and whether the same topics are showing up in organic AI mentions.
The practical sequence is: install measurement, launch with enough budget to observe delivery, compare conversion quality against paid search or LinkedIn, then use clear kill criteria before scaling.