Keyword Chef vs QuestionDB in 2026: SERP difficulty vs real audience questions
Keyword Chef tells you whether a keyword is winnable. QuestionDB tells you what people are actually asking on Reddit and Quora before you decide what to write about.
Keyword Chef
QuestionDB- QuestionDB pulls questions from Reddit, Quora, Google PAA, and People Also Search in a single search. Keyword Chef does not mine community or question data at all, it works from wildcard search patterns.
- Keyword Chef runs live SERP analysis on every keyword, scoring actual ranking difficulty. QuestionDB's keyword difficulty score on paid plans is a standard metric, not a live SERP re-analysis.
- QuestionDB has a genuinely free tier (5 searches/month). Keyword Chef has a free trial but no permanent free plan.
- QuestionDB's Solo plan at $9.99/month is the cheapest entry point of either tool. Keyword Chef's Starter plan starts at $29/month.
- Neither tool offers an API at any plan tier, a shared limitation for teams wanting programmatic access.
- QuestionDB includes an AI Outline Generator and AI Content Analysis built into the platform. Keyword Chef has no AI writing or content-brief features.
Keyword Chef and QuestionDB solve different halves of the same content research problem, and the overlap between them is smaller than the "Keyword Research" category label suggests. Keyword Chef starts from a seed phrase, fills in wildcard variations from real search data, and scores each one against a live SERP so you know before you write whether it is winnable. QuestionDB starts from a topic and pulls the actual questions people are asking about it from Reddit, Quora, Google People Also Ask, and People Also Search, then layers on search volume and difficulty once you are on a paid plan. Neither has an API. Keyword Chef is the sharper tool for validating whether a specific keyword is worth targeting; QuestionDB is the sharper tool for figuring out what to write about in the first place.
The tools at a glance
Keyword Chef
Credit-based keyword research with wildcard search and real-time SERP analysis
Keyword Chef is built around one job: take a seed phrase, expand it into every plausible long-tail wildcard variation, and score each result against a live SERP so you can see whether it is actually winnable before you commit to writing it. The wildcard syntax ("best * for beginners") is what most publishers reach for it because of, and the real-time SERP scoring means the difficulty number reflects the current results page, not a cached model.
Where it does not compete with QuestionDB at all is topic discovery from community data. There is no Reddit or Quora mining, no People Also Ask aggregation, and no AI content brief generator. Keyword Chef assumes you already have a topic or niche in mind and want to find the specific phrasing worth targeting within it.
Pricing runs on credits, from $29/month for 5,000 up to $119/month for 50,000, with a Pay As You Go option for lifetime, non-expiring credits. There is a free trial to test the wildcard search and SERP scoring, but no permanent free tier the way QuestionDB offers.
| Feature | Starter $29/month | Plus $69/month | Pro $119/month | Pay As You Go Per credit |
|---|---|---|---|---|
| Monthly credits | 5,000 | 20,000 | 50,000 | Lifetime, no expiry |
| Wildcard search | Yes | Yes | Yes | Yes |
| Real-time SERP scoring | Yes | Yes | Yes | Yes |
| Free permanent tier | No | No | No | No |
| AI content brief / outline tool | No | No | No | No |
| API access | No | No | No | No |
QuestionDB
Find low-competition keywords by mining questions from Reddit, Quora, SERP PAA, and People Also Search
QuestionDB works backward from where Keyword Chef starts. Instead of expanding a seed phrase into search variations, it aggregates the actual questions people are posting in Reddit threads, Quora answers, Google People Also Ask boxes, and People Also Search results, then hands you that raw list of what an audience is genuinely asking. That is a meaningfully different signal than search-volume-driven keyword expansion, since forum and Q&A language often surfaces intent that autocomplete tools undercount.
Paid plans add search volume, keyword difficulty, and CPC data on top of the question set, so you can prioritize which questions are worth answering, though this difficulty score is a standard modeled metric rather than the live per-SERP re-analysis Keyword Chef runs. The AI Outline Generator then takes a chosen question and produces a structured article outline, and AI Content Analysis checks existing pages against SERP competitors for coverage gaps.
The free tier (5 searches/month) is a real, no-cost way to sample data quality before paying anything, and the Solo plan at $9.99/month for 100 searches is the cheapest paid entry point in this comparison by a wide margin. There is no API on any plan, and data depth thins out on highly competitive, saturated topics.
| Feature | Free Free | Solo $9.99/mo | Business $29.99/mo | Enterprise $69.99/mo |
|---|---|---|---|---|
| Searches per month | 5 | 100 | 400 | 1,000 |
| Search volume / KD / CPC data | No | Yes | Yes | Yes |
| Reddit, Quora, PAA, PASF mining | Yes | Yes | Yes | Yes |
| AI Outline Generator | No | Yes | Yes | Yes |
| CSV / image export | No | Yes | Yes | Yes |
| API access | No | No | No | No |
Head-to-head feature comparison
| Feature | Keyword Chef | QuestionDB |
|---|---|---|
| Wildcard keyword expansion | Yes | No |
| Live SERP difficulty scoring | Yes | No |
| Reddit / Quora question mining | No | Yes |
| Google PAA and People Also Search data | No | Yes |
| Search volume data | Estimated (bundled with SERP scoring) | Yes (paid plans) |
| CPC data | No | Yes (paid plans) |
| AI outline / content brief generator | No | Yes |
| AI content gap analysis | No (Niche Insights add-on covers content gaps, not SERP audits) | Yes |
| CSV export | No (shareable report links instead) | Yes |
| Free permanent tier | No | Yes (5 searches/mo) |
| API access | No | No |
| Starting paid price | $29/mo | $9.99/mo |
Which should you choose?
Keyword ChefQuestionDBQuestionDBQuestionDBKeyword ChefQuestionDBThese two tools sit at different points in the content pipeline rather than competing head to head. QuestionDB is upstream, it tells you what an audience is actually curious about before you have committed to a topic. Keyword Chef is downstream, it tells you whether the specific phrasing you have landed on is worth the effort once you already know the topic. A publisher running a serious content operation plausibly wants both: QuestionDB to source topics from Reddit and Quora chatter, Keyword Chef to stress-test the resulting keyword list against live SERPs before assigning it to a writer.
Bottom line
Start with QuestionDB if you do not yet know what to write about, its free tier costs nothing to test and the Solo plan at $9.99/month is cheap enough to run alongside almost any other tool. Reach for Keyword Chef once you have a topic and need to know which specific long-tail phrasing is actually winnable against today's SERP. Content operations with real volume will likely end up using both rather than picking one over the other permanently.
Frequently asked questions
Should I use Keyword Chef or QuestionDB first in my research process?
QuestionDB comes first if you are choosing a topic, since it surfaces real audience questions from Reddit, Quora, and Google PAA before you have committed to a specific keyword. Keyword Chef comes second, once you have a topic in mind and want to validate specific long-tail phrasing against a live SERP before writing.
Does Keyword Chef pull data from Reddit or Quora like QuestionDB does?
No, Keyword Chef does not mine community platforms at all. Its wildcard search generates keyword variations from real search data patterns, not from forum or Q&A content, which is the core difference between the two tools' data sources.
Is QuestionDB's free tier actually usable or just a teaser?
QuestionDB's free tier gives 5 searches per month, which is enough to sample question data quality for a specific niche before paying, though it is restrictive for any regular research workflow. Keyword Chef has no permanent free tier, only a free trial period.
Which tool is cheaper for a freelance writer on a tight budget?
QuestionDB is cheaper at every tier, with a free plan and a $9.99/month Solo tier for 100 searches. Keyword Chef's lowest paid plan is $29/month, though its Pay As You Go credits never expire, which can suit infrequent research better than QuestionDB's monthly search caps.
Does either tool have an API for pulling data into a dashboard?
No, neither Keyword Chef nor QuestionDB offers an API at any plan level. Both require exporting data manually, CSV and shareable report links for Keyword Chef, CSV and image export for QuestionDB.
Can QuestionDB replace Keyword Chef's SERP difficulty scoring?
Not exactly. QuestionDB's paid plans include a keyword difficulty score, but it is a standard modeled metric rather than the live, per-keyword SERP re-analysis Keyword Chef runs on every search. If your priority is knowing the real current competitive makeup of a SERP before writing, Keyword Chef's approach is more current by design.