Keyword Insights vs Surfer

Keyword Insights

Buy it for the clustering engine, which is genuinely better than doing SERP-overlap grouping yourself in a spreadsheet; treat the AI writer as a bonus rather than a reason. Agencies planning content hubs across many sites get the most out of it, solo bloggers publishing four posts a month will burn less money on Surfer or Frase.

Pros

• +SERP-overlap clustering is the core competency and it is fast at scale
• +Public API means clustering can be driven from your own scripts
• +Basic plan ships 10,000 credits, enough for a real clustering job not a demo
• +Discovery pulls from Reddit, Quora and PAA, not just a keyword database

Cons

• −No free tier - entry is a paid $1 trial that ends in pay-as-you-go
• −Basic is single-seat, so any team needs the $99 Professional plan
• −Full agent-written articles cost 1,200 credits, which drains an allowance quickly
• −Volume and difficulty data is thinner than Ahrefs or Semrush

Surfer

Surfer is the editor to buy when a team writes for Google in volume and wants a number on every draft before it ships; the term-coverage score is a proxy, but a disciplined one, and the Google Docs and WordPress routes keep writers out of yet another tab. Solo bloggers on a budget and teams who already run Clearscope will find the yearly-first pricing and the document quotas harder to love. The 2025 pivot to AI-search tracking is real but priced as a second product.

Pros

• +Live score in the editor turns a ranking-page analysis into concrete edits
• +WordPress plugin, Google Docs and Contentful integrations put the score where writing happens
• +Audit and ranking-drop alerts catch decay on pages that were once fine
• +AI-search visibility tracking across ChatGPT, Perplexity, Gemini and AI Overviews under the same login

Cons

• −Headline prices are billed yearly; monthly plans cost about 20% more
• −Documents and tracked pages are metered, and unused credits reset rather than roll over
• −API access is reserved for the Peace of Mind tier or an add-on
• −Owned by Positive Group since October 2025, so roadmap and pricing may follow the group's packaging

Is Keyword Insights cheaper than Surfer?

On published entry prices, Surfer starts lower — $49/mo against $58/mo for Keyword Insights. Entry price is the lowest paid plan as we last verified it; what each plan includes differs.

Which has a public API, Keyword Insights or Surfer?

Both ship a public API, so either can be built on; the fact table above shows the platforms each one runs on.