Cloudflare D1vsPostgreSQL
How 10 AI models weigh Cloudflare D1 against PostgreSQL on the 1 buying question where both came up.
- Cloudflare D1
- 3%of answers named it
- PostgreSQL
- 77%of answers named it
- Placed higher
- 1–32times Cloudflare D1 vs PostgreSQL, over 33 model rankings that listed either
- Models leaning
- 0–10toward Cloudflare D1 vs PostgreSQL
Which models prefer which
Share of each model's answers that named each product, and how often its ranking put one above the other (a product listed beats one left off) · On the 1 shared question, every wording
| Model | Cloudflare D1 | PostgreSQL | Placed higher | Leans |
|---|---|---|---|---|
| Claude Haiku 5.5 | 0% | 75% | 0–3 | PostgreSQL |
| GPT-6 Luna | 0% | 75% | 0–3 | PostgreSQL |
| Gemini 4 Argon | 0% | 75% | 0–3 | PostgreSQL |
| Qwen 3.8 Flash | 17% | 75% | 1–3 | PostgreSQL |
| DeepSeek V4 Pro | 0% | 75% | 0–3 | PostgreSQL |
| GLM-5.3 | 8% | 75% | 0–3 | PostgreSQL |
| Kimi K3 | 0% | 83% | 0–4 | PostgreSQL |
| MiniMax M3 | 0% | 83% | 0–4 | PostgreSQL |
| Mistral Large 4 | 0% | 75% | 0–3 | PostgreSQL |
| Nemotron 3 Ultra | 0% | 80% | 0–3 | PostgreSQL |
What the models say about Cloudflare D1
One reason per model, from the shared questions
No reasons given.
What the models say about PostgreSQL
One reason per model, from the shared questions
- Claude Haiku 5.5
Robust, standards-compliant, feature-rich relational database with excellent ecosystem and extensibility.
- GPT-6 Luna
Best default for most web apps: reliable, feature-rich, and supported almost everywhere.
- Gemini 4 Argon
Unmatched versatility, reliability, and extension ecosystem make it the ultimate default choice.
- Qwen 3.8 Flash
Default choice: reliable, free, supports JSON, vector search, huge ecosystem.
- DeepSeek V4 Pro
Best all-around open-source RDBMS with unmatched reliability, extensibility, and community.
- GLM-5.3
Feature-rich, reliable relational standard; JSON support fits most web app needs.
- Kimi K3
Versatile open-source default with relational power, JSON support, and extensions.
- MiniMax M3
Robust, feature-rich, and the default choice for modern web apps.
- Mistral Large 4
Best open-source relational database: powerful, extensible, ACID-compliant, free.
- Nemotron 3 Ultra
Robust open-source SQL with advanced features
Tracked since October 25, 2026. Each time the panel answers these questions again, both shares are added here.
Question by question
Share of all answers that named each, every wording pooled, with its place among every product named · Both-named questions first
| Question | Cloudflare D1 | PostgreSQL |
|---|---|---|
| Best databases for web apps | 3% #31 | 77% #2 |
| Best cloud data warehouses | · | 3% #16 |