Database · October 2026
Firebase (Firestore) vs MongoDB: which do AI models pick?
MongoDB leads on being recommended first (17% vs 1%). Firebase (Firestore) leads on being named in AI-built apps (3% vs 0%).
Firebase (Firestore)MongoDB
| Firebase (Firestore) | MongoDB | |
|---|---|---|
| Rank among database vendors recommended first | #5 of 5 | #3 of 5 |
| Rank in AI-built apps | #3 of 3 | not ranked |
| More detail | Firebase (Firestore) page | MongoDB page |
Based on 180 recommendation answers and 179 AI-built apps. Differences under about 7 points are within noise.
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Measured 2026-10-01 with claude-sonnet-5.5, gpt-6.1-sol, gemini-3.8-flash, grok-4.7, deepseek-v4.1-flash, qwen3.8-max-prime, 5 runs per recommendation prompt and 5 per build prompt, via public APIs with no system prompt. Methodology. DefaultRank is independent and not affiliated with any tool vendor or model provider.