# Why OpenAI chose ClickHouse for petabyte-scale observability

DevFeed: [Why OpenAI chose ClickHouse for petabyte-scale observability](<https://devfeed.tech/articles/why-openai-chose-clickhouse-for-petabyte-scale-observability-5662.md>)

Original publisher: [Read original article](<https://clickhouse.com/blog/why-openai-uses-clickhouse-for-petabyte-scale-observability>)

Author: ClickHouse

Published: 2025-06-30T08:51:48Z

Content type: article

Language: en

Sources: [ClickHouse Blog](<https://devfeed.tech/sources/clickhouse-blog.md>)

Topics: [clickhouse](<https://devfeed.tech/topics/clickhouse.md>), [observability](<https://devfeed.tech/topics/observability.md>), [OpenAI](<https://devfeed.tech/topics/openai.md>), [telemetry](<https://devfeed.tech/topics/telemetry.md>), [ChatGPT](<https://devfeed.tech/topics/chatgpt.md>), [Open Source](<https://devfeed.tech/topics/open-source.md>), [Traces](<https://devfeed.tech/topics/traces.md>), [data](<https://devfeed.tech/topics/data.md>)

Tags: [chatgpt](<https://devfeed.tech/tags/chatgpt.md>), [clickhouse](<https://devfeed.tech/tags/clickhouse.md>), [data](<https://devfeed.tech/tags/data.md>), [logs](<https://devfeed.tech/tags/logs.md>), [observability](<https://devfeed.tech/tags/observability.md>), [open-source](<https://devfeed.tech/tags/open-source.md>), [openai](<https://devfeed.tech/tags/openai.md>), [telemetry](<https://devfeed.tech/tags/telemetry.md>), [traces](<https://devfeed.tech/tags/traces.md>), [vendor-lock-in](<https://devfeed.tech/tags/vendor-lock-in.md>)

## AI overview

OpenAI ingests petabytes of logs each day across model research, ChatGPT, and enterprise APIs. The article explains how ClickHouse supports fast, scalable observability for high-cardinality traces, ingestion spikes, real-time experiment analysis, and reliable log search without vendor lock-in.

## Source excerpt

OpenAI ingests petabytes of logs a day, and ClickHouse is how they keep up. From billion-model experiments to viral ChatGPT spikes, see how they built observability for everything.