# kdb+: how AI models rank it, November 2026

Gane Index, November 2026 Edition. Named in 8 judge labels across 1 category by 6 of 14 models. Page: https://www.gane.ai/index/it/vendors/kdb

## Standing by category

| Category | Share | Rank | Negative rate | Labels |
|---|---|---|---|---|
| [Time series databases](https://www.gane.ai/index/it/it-data/time-series-databases/index.md) | 0% | 74 | 50% | 8 |

## What the models said for it

- "Best for: Financial tick data, institutional finance and quantitative research" (Muse Glimmer 30B, Time series DBs)

## And against it

- "Avoid ultra-enterprise like kdb+ or pure big-data tools unless your ingest is petabyte-scale." (Grok 4.20, Time series DBs)
- "Avoid commercial-only DBs like kdb+ (very expensive)" (Grok 4.20, Time series DBs)
- "Beware Vendor Lock-in and Cost: kdb+ ... licensing costs are astronomical" (Qwen 3.7 Flash, Time series DBs)
- "though it has a steep learning curve and high licensing costs" (Gemini 3.5 Flash, Time series DBs)

## By model

| Model | First choice | Alternative | Mention | Warning | Labels |
|---|---|---|---|---|---|
| Claude Haiku 4.5 | 0 | 0 | 0 | 0 | 0 |
| GPT-5.4 mini | 0 | 0 | 0 | 0 | 0 |
| Gemini 3.5 Flash | 0 | 0 | 0 | 1 | 1 |
| Perplexity Sonar | 0 | 0 | 1 | 0 | 1 |
| Grok 4.20 | 0 | 0 | 1 | 2 | 3 |
| Mistral Small | 0 | 0 | 0 | 0 | 0 |
| DeepSeek V4 Flash | 0 | 0 | 0 | 0 | 0 |
| Llama 4 Maverick | 0 | 0 | 0 | 0 | 0 |
| Qwen 3.7 Flash | 0 | 0 | 0 | 1 | 1 |
| Kimi K2 | 0 | 0 | 0 | 0 | 0 |
| GLM 4.7 FlashX | 0 | 0 | 1 | 0 | 1 |
| MiniMax M2.5 | 0 | 0 | 0 | 0 | 0 |
| GPT-6 Luna | 0 | 0 | 0 | 0 | 0 |
| Muse Glimmer 30B | 0 | 1 | 0 | 0 | 1 |

## Sources returned with these answers

The sites and pages cited by the answers that named kdb+, from 24 of the 30 answers that named it (only the models that return a source list).

### Domains cited

- influxdata.com: 17
- tigerdata.com: 16
- github.com: 14
- db-engines.com: 12
- questdb.com: 12
- g2.com: 10
- timestored.com: 9
- clickhouse.com: 7
- cratedb.com: 6
- news.ycombinator.com: 6

### Pages cited

- https://db-engines.com/en/ranking/time+series+dbms: 11
- https://github.com/ismanf/just-system-design/blob/main/04-databases/time-series-databases.md: 9
- https://influxdata.com/comparison: 9
- https://tigerdata.com/learn/the-best-time-series-databases-compared: 9
- https://timestored.com/data/top-timeseries-databases: 9
- https://questdb.com/blog/best-time-series-databases: 8
- https://influxdata.com/learn/what-is-time-series-database: 7
- https://clickhouse.com/resources/engineering/what-is-time-series-database: 6

## Record

- Method: https://www.gane.ai/index/it/methodology
- License: CC BY 4.0. Cite as Gane Index, November 2026 Edition, www.gane.ai/index/it.