OpenAI tech stack
OpenAI builds mostly with Python, JavaScript, SQL, Rust. Its stack also includes Linux, Kubernetes, React.js, PostgreSQL. Python is named in 279 of the 1,022 job postings OpenAI published in the last 12 months (27%). Counted by Alion from the job postings of OpenAI, updated Sep 28, 2026.
What programming languages does OpenAI use?
Python is named in 27% of job postings at OpenAI, followed by JavaScript (10%), SQL (8%), Rust (7%).
Python
279 27%
JavaScript
107 10%
SQL
84 8%
Rust
74 7%
C++
64 6%
TypeScript
55 5%
Go
43 4%
Java
18 2%
Show all (22)
What frameworks and libraries does OpenAI use?
React.js is named in 2% of job postings at OpenAI, followed by PyTorch (1%), TensorFlow (1%), FastAPI (1%).
React.js
16 2%
PyTorch
14 1%
TensorFlow
9 1%
FastAPI
7 1%
Dagster
4 <1%
Flink
4 <1%
Show all (36)
What databases does OpenAI use?
PostgreSQL is named in 1% of job postings at OpenAI, followed by MySQL (1%), Snowflake (<1%), Amazon Redshift (<1%).
PostgreSQL
14 1%
MySQL
10 1%
Snowflake
4 <1%
Amazon Redshift
1 <1%
Azure Cosmos DB
1 <1%
ClickHouse
1 <1%
Google BigQuery
1 <1%
What cloud and platforms does OpenAI use?
Linux is named in 4% of job postings at OpenAI, followed by Kubernetes (3%), AWS (3%), Azure (2%).
Show all (32)
What developer tools does OpenAI use?
Terraform is named in 2% of job postings at OpenAI, followed by Model Context Protocol (1%), Microsoft Excel (1%), Bazel (1%).
Terraform
18 2%
Model Context Protocol
11 1%
Bazel
7 1%
Git
6 1%
Rest API
5 <1%
Show all (44)
And 4 more, each named in fewer postings.
What AI and ML technologies does OpenAI use?
LLM is named in 6% of job postings at OpenAI.
LLM
62 6%
Which engineering practices does OpenAI ask for?
AI Agents is named in 12% of job postings at OpenAI, followed by Machine Learning (7%), CI/CD (5%), Post-training (3%).
AI Agents
125 12%
CI/CD
46 5%
Multimodal AI
31 3%
Show all (69)
And 29 more, each named in fewer postings.
What does each OpenAI team work with?
The technologies each team's postings require most often, with the number of postings that require them.
Backend
166 postingsAI/ML
148 postingsSales
95 postingsProduct
53 postingsHow does your stack fit OpenAI?
How much does OpenAI pay by technology?
Median stated pay of the postings that name each technology, against the median of all OpenAI postings with stated pay: $344k across 826 postings.
| Technology | Postings with pay | Median | vs company median |
|---|---|---|---|
| Python | 215 | $385k | +12% |
| Rust | 71 | $423k | +23% |
| SQL | 71 | $325k | −6% |
| C++ | 64 | $385k | +12% |
| JavaScript | 62 | $308k | −11% |
| LLM | 46 | $299k | −13% |
| Go | 40 | $385k | +12% |
| TypeScript | 38 | $385k | +12% |
| Linux | 36 | $385k | +12% |
| Kubernetes | 33 | $445k | +29% |
How is the OpenAI stack changing?
Read from the dates of the postings themselves: a technology is new when the first posting that names it appeared in the last six months, rising or falling when its share of postings moved between the last two quarters.
How modern is the OpenAI stack?
OpenAI scores 68 out of 100 (Modern). The score averages how current each technology in the stack is and adds weight for AI adoption. AI technologies in the stack: 1; legacy ones: 0.
How common is the OpenAI stack in its industry?
Share of the 469 companies in the same industries, whose stack Alion knows, that use each technology.
What sets OpenAI apart
OpenAI products in its job postings
Postings at OpenAI name its own products. They describe what the company makes, so they are left out of the stack above.
Companies with a stack like OpenAI
Questions about the OpenAI tech stack
What programming languages does OpenAI use?
The languages named in OpenAI job postings are Python (27%), JavaScript (10%), SQL (8%), Rust (7%), C++ (6%), as a share of the 1,022 postings of the last 12 months.
Does OpenAI use React.js?
Yes. React.js is named in 16 of 1,022 job postings (2%) and required in 11 of them.
What cloud and platforms does OpenAI use?
The cloud and platforms named in OpenAI job postings are Linux (37), Kubernetes (34), AWS (33) (postings in brackets).
What skills do you need for a Backend job at OpenAI?
Backend postings at OpenAI most often require Python (72), Rust (43), C++ (35), Go (28), out of 166 postings in the last 12 months.
Is the OpenAI tech stack changing?
Yes. Figma, Cadence Allegro, Ansys SIwave, Cadence Sigrity first appeared in OpenAI job postings in the last six months.
How modern is the OpenAI tech stack?
OpenAI scores 68 out of 100 (Modern). The score averages how current each technology in the stack is and adds weight for AI adoption. AI technologies in the stack: 1; legacy ones: 0.
How does Alion know the OpenAI tech stack?
Alion reads every job posting OpenAI publishes and tags the technologies each one names. The figures on this page count the 1,022 postings of the last 12 months and were updated on Sep 28, 2026.
Method and citation
Alion reads every job posting the company publishes and tags the technologies each one names. Shares count the postings of the last 12 months, open and closed; the company's own products are counted apart. How we count
Alion, "OpenAI tech stack: 211 technologies from 1,022 job postings", as of Sep 28, 2026. https://alion.io/company/openai/technologies