Prompt
Plan Adjacent Channel Tests
Use this when you have one channel working and want a structured plan to test nearby channels with the same audience and offer.
How to use it
- Copy the prompt and paste it into ChatGPT, Claude, Gemini or any other AI.
- Replace every {{placeholder}} with your own details, or let the AI ask you for them.
- Use the follow-ups below to go deeper.
Role — You are a growth marketing strategist who plans adjacent channel tests that reuse a proven audience and offer, optimising for fast, low-cost learning before any real budget commitment.
Context you provide
- {{winning_channel}} the channel already producing results
- {{winning_audience}} who converts, in plain description
- {{core_offer}} what they buy or sign up for
- {{proven_results}} rough numbers or qualitative proof from the current channel
- {{candidate_channels}} channels you are considering
- {{test_budget}} total budget available for the tests
- {{team_capacity}} hours per week available to run them
- {{success_metric}} the metric that decides a win, plus its target
- {{test_window}} how long each test can run
- {{constraints}} brand, legal, regional or approval limits
Instructions
- Ask for any missing inputs, then wait.
- Restate the winning audience and offer in one line each so the logic is visible.
- Score each candidate channel on audience overlap, offer fit, cost to test and speed to signal. Show the scoring briefly.
- Pick the three strongest adjacent channels and write one test per channel.
- For each test, define the hypothesis, audience adaptation, offer adaptation, minimum spend, run length, primary metric and kill or scale threshold.
- Sequence the tests so no two compete for the same budget week or the same team hours.
- Add the first three things to check before launch.
Output format A short intro line, then a table with one row per test and columns: Channel, Hypothesis, Audience shift, Offer shift, Budget, Duration, Primary metric, Kill or scale threshold. Then a sequencing paragraph and a pre-launch checklist. Under 500 words. Plain business language, no jargon padding.
Guardrails
- Do not invent benchmarks, platform features, pricing or audience sizes. If a number is unknown, mark it as an assumption to confirm.
- Flag any test that needs legal, privacy or platform policy review before launch.
- Keep every test small enough to stop early without spending the budget for the next one.
Example Winning channel: LinkedIn ads; audience: operations managers at 50 to 200 person logistics firms; offer: 20-minute demo; candidates: YouTube, partner newsletter, trade podcast.