Redis vs PostgreSQL
Zero of fourteen models named Redis first on the direct prompt; zero named PostgreSQL. Redis was named by fourteen of the fourteen models and PostgreSQL by nine and Redis carries 55 labels and PostgreSQL 11, so the shares are not directly comparable.
Named in four categories this edition.
Named in six categories this edition.
Share is the count of first choices across the direct, paraphrase, budget and scale prompts over all fourteen models, for a mid-market B2B company; rank is within the category; every quote names the model and the prompt it came from. Both figures come from the nosql databases page.
By framing
RedisFirst choices, of fourteen modelsPostgreSQL
Across every category in the October 2026 Edition, Redis and PostgreSQL were named in the same answer twenty-seven times, of the 166 answers naming Redis and the 106 naming PostgreSQL. In those answers PostgreSQL took the first choice seven times and Redis zero.
Every model, every framing
| Model | Direct | Paraphrase | Comparative | Budget-constrained | Scale-constrained | Negative |
|---|---|---|---|---|---|---|
| Claude Haiku 4.5 | | | | |||
| GPT-5.4 mini | | |||||
| Gemini 3.5 Flash | | | | | ||
| Perplexity Sonar | | | ||||
| Grok 4.1 Fast | | | | |||
| Mistral Small | | | | | ||
| DeepSeek V4 Flash | | | | | | |
| Llama 4 Maverick | | |||||
| Qwen 3.7 Flash | | | | | ||
| Kimi K2 | | | | | ||
| GLM 4.7 FlashX | | | | |||
| MiniMax M2.5 | | | ||||
| GPT-6 Luna | | | | |||
| Muse Glimmer 30B | | | |
Redis PostgreSQL first choice named as an alternative argued againstblank: not namedEach cell is one answer, Redis on the left and PostgreSQL on the right.The direct prompt
Neither was the first choice, one was named
4 of 14 modelsThe answer put something else first and named one of the two as an alternative.Neither was named
10 of 14 modelsThe answer made no first choice from these two in this category.Bold names in an answer are the products the judge labeled a first choice; a model naming several gives each of them that label. The full answer text for every row is in the record.
By buyer segment
PostgreSQL5%#4 of 10Redis0%#8 of 10Redis2%#4 of 13PostgreSQL2%#6 of 13Redis2%#8 of 9PostgreSQL0%#– of 9What the models said about Redis
Every negative label with a quote, up to three, then the highest-weighted positives, up to three. Six of seven in this category shown.
“Redis is extremely fast but should be used with caution for data that needs to persist on disk or for applications requiring complex queries” Mistral Small · negative prompt · soft negative
“Cautious when: Using it as a primary database rather than a cache — it's an in-memory store, and data durability can be a concern.” DeepSeek V4 Flash · negative prompt · soft negative
“early versions lacked auth. Redis 7+ is solid; use ACLs and avoid as a primary durable store unless clustered with persistence.” Grok 4.1 Fast · negative prompt · soft negative
“Redis is the most popular and versatile key-value store... ideal for mid-sized B2B applications” Mistral Small · paraphrase prompt · first choice
“Redis receiving the highest rating of 8.9 among the leaders” Claude Haiku 4.5 · comparative prompt · first choice
“Key-Value Stores Top Examples: Redis, Amazon DynamoDB” Qwen 3.7 Flash · comparative prompt · first choice
What the models said about PostgreSQL
Every negative label with a quote, up to three, then the highest-weighted positives, up to three. Three of three in this category shown.
“Before choosing any NoSQL database, ask yourself: "Why can't I use PostgreSQL?"” Gemini 3.5 Flash · negative prompt · first choice
“If your data is highly normalized and relational ... stick to Postgres.” Qwen 3.7 Flash · scale prompt · first choice
“modern trends suggest looking at PostgreSQL (specifically with JSONB) as the ultimate hybrid solution” Qwen 3.7 Flash · direct prompt · alternative
Comparisons are drawn for the top eight products in each category, each against each. The output is the models' output; nothing here is a recommendation by the index.