{"status":"insufficient_data","category":{"id":"0bf7b805-d590-4d7a-82bc-a2dddf9e4d39","slug":"open-source-headless-cms","label":"Open-source headless CMS"},"window":{"weeks":4,"from":"2026-08-20T17:18:30.728Z","to":"2026-09-17T17:18:30.728Z","prior_from":"2026-07-23T17:18:30.728Z"},"sample_size":12,"prior_sample_size":91,"independent_sample_size":12,"prior_independent_sample_size":91,"min_sample":20,"engine_samples":{"grok":{"runs":0,"last_run_at":"2026-08-20T07:22:24.7562+00:00"},"gemini":{"runs":2,"last_run_at":"2026-09-08T06:54:54.162375+00:00"},"openai":{"runs":1,"last_run_at":"2026-09-08T06:54:44.448633+00:00"},"anthropic":{"runs":7,"last_run_at":"2026-08-21T06:01:07.762524+00:00"},"perplexity":{"runs":2,"last_run_at":"2026-09-08T06:54:36.315908+00:00"}},"volatility":{"score":null},"integrity":null,"entries":[],"methodology_url":"https://www.orbator.io/ai-index/methodology","license":"Free to use with attribution to orbator.io","editorial":[{"id":"41e631f5-beb4-492b-911d-dd15e8eda5f7","section":"how_to_choose","body_md":"The seven sampled prompts split across five intents, and the leaders differ by intent. Strapi was recommended in 100% of the 9 problem_solving runs about self-hosting a CMS with custom content types and a GraphQL API, and shared the top of best_in_category at 94.4% of 18 runs with Payload. Directus led the 18 alternatives runs at 88.9%, tied with Strapi, and was recommended in 100% of the 9 recommendation runs about multi-site publishing, alongside Payload and Strapi. Comparison was the thinnest intent at 9 runs, with Directus, Payload and Strapi each at 66.7%.\n\nThree of the top five over-index on the same self-hosted frontend prompt, so that question separates them less than the others. Strapi is the only top product carrying a pricing fact, a Starter plan at $35 a month, last verified 2026-09-05.","window_to":"2026-09-05","review_status":"generated","generated_at":"2026-09-05T17:38:21.459Z"},{"id":"ad72ab72-f920-4533-b474-5c75f428ca66","section":"top_products","body_md":"Strapi was recommended in 90.5% of 63 sampled answers in the 4-week window to 2026-09-05, the highest recommendation share in the category. Its mention breakdown splits into 41 recommended runs and 16 listed runs, with 3 in context. Across engines it ran highest with Perplexity and Grok, each 100%, of Perplexity's 14 answers and Grok's 7, and lowest with ChatGPT at 78.6% of 14 answers. Starter pricing is $35 a month, last verified 2026-09-05.\n\nDirectus over-indexes on the prompt about a self-hosted CMS for a Next.js frontend, recommended in 100% of those 9 runs. Overall it took 43 recommended runs and 10 listed. Grok recommended it in 100% of 7 answers, Claude in 71.4% of 14.\n\nPayload over-indexes on the same self-hosted frontend prompt, recommended in 100% of 9 runs. It has the cleanest split of the three, 45 recommended runs against 7 listed. Grok recommended it in 100% of 7 answers, Claude in 64.3% of 14.\n\nNext.js was recommended in 63.5% of 63 sampled answers in the window to 2026-09-05, with 31 recommended runs and 9 listed. It carries the widest engine spread in the category, 100% of Grok's 7 answers against 35.7% of Gemini's 14.\n\nPostgreSQL was recommended in 30.2% of 63 sampled answers, with 8 recommended runs, 11 listed and 1 warned against. It over-indexes on the GraphQL self-hosting prompt at 88.9% of 9 runs, so it is a narrow shortlist entry outside that question. Grok recommended it in 42.9% of 7 answers, Perplexity in 21.4% of 14.","window_to":"2026-09-05","review_status":"generated","generated_at":"2026-09-05T17:38:21.466Z"},{"id":"008e9184-6e25-4f1e-ab57-a9dcf0fba78d","section":"engine_disagreement","body_md":"Four of the five engines recommended Strapi most among the top five: Claude across 14 answers, Gemini across 14 answers, Grok across 7 answers and Perplexity across 14 answers. ChatGPT was the exception, recommending Directus most among the top five across its 14 answers.\n\nThe widest gap between engines belongs to Next.js. Gemini recommended it in 35.7% of its 14 answers, Grok in 100% of its 7 answers, a spread of 64.3 points. Strapi ran narrower, from 78.6% of ChatGPT's 14 answers to 100% of Grok's 7 answers and 100% of Perplexity's 14 answers. PostgreSQL sat lowest across the board, between 21.4% of Perplexity's 14 answers and 42.9% of Grok's 7 answers.","window_to":"2026-09-05","review_status":"generated","generated_at":"2026-09-05T17:38:21.468Z"},{"id":"bf9f32cf-7490-4150-93a3-db5e32b43eb6","section":"what_moved","body_md":"This is the first measured window on record for the category, covering 2026-08-08 to 2026-09-05 with 63 sampled answers across five engines. There is no prior window to compare against, so no entries, exits or share changes can be reported yet.\n\nStrapi leads it now, recommended in 90.5% of those 63 answers, and was first named in 23 runs. Directus follows at 84.1% of 63, Payload at 82.5% of 63. Next.js sits at 63.5% of 63 and PostgreSQL at 30.2% of 63. The gap between the top three is narrower than their confidence intervals, with Strapi ranging from 80.7 to 95.6 and Payload from 71.4 to 90. Later windows will show whether that ordering holds.","window_to":"2026-09-05","review_status":"generated","generated_at":"2026-09-05T17:38:21.470Z"}]}