OpenAI tech stack
OpenAI builds mostly with Python, JavaScript, SQL, Rust. Its stack also includes Linux, AWS, PostgreSQL, PyTorch. Python is named in 322 of the 1,370 job postings OpenAI published in the last 12 months (24%). Counted by Alion from the job postings of OpenAI, updated Nov 12, 2026.
What programming languages does OpenAI use?
Python is named in 24% of job postings at OpenAI, followed by JavaScript (9%), SQL (8%), Rust (5%).
Python
322 24%
JavaScript
123 9%
SQL
106 8%
Rust
74 5%
C++
63 5%
TypeScript
62 5%
Go
44 3%
Java
19 1%
Show all (23)
What frameworks and libraries does OpenAI use?
PyTorch is named in 1% of job postings at OpenAI, followed by React.js (1%), TensorFlow (1%), FastAPI (1%).
PyTorch
15 1%
React.js
12 1%
TensorFlow
9 1%
FastAPI
8 1%
Flink
6 <1%
Dagster
4 <1%
Show all (35)
What databases does OpenAI use?
PostgreSQL is named in 1% of job postings at OpenAI, followed by MySQL (1%), Snowflake (<1%), Google BigQuery (<1%).
PostgreSQL
16 1%
MySQL
11 1%
Snowflake
5 <1%
Google BigQuery
2 <1%
Amazon Redshift
1 <1%
Azure Cosmos DB
1 <1%
ClickHouse
1 <1%
ElasticSearch
1 <1%
Show all (9)
What cloud and platforms does OpenAI use?
Linux is named in 3% of job postings at OpenAI, followed by AWS (3%), Kubernetes (3%), Azure (2%).
AWS
36 3%
Kubernetes
36 3%
Azure
28 2%
GCP
21 2%
GitHub
17 1%
Spark
12 1%
Buildkite
11 1%
Show all (37)
What developer tools does OpenAI use?
Terraform is named in 1% of job postings at OpenAI, followed by Model Context Protocol (1%), Microsoft Excel (1%), Bazel (1%).
Terraform
19 1%
Model Context Protocol
16 1%
Bazel
9 1%
Rest API
7 1%
Git
7 1%
Show all (64)
And 24 more, each named in fewer postings.
What AI and ML technologies does OpenAI use?
LLM is named in 5% of job postings at OpenAI, followed by Gemini (<1%).
Which engineering practices does OpenAI ask for?
AI Agents is named in 12% of job postings at OpenAI, followed by Machine Learning (6%), CI/CD (4%), Agentic Workflows (3%).
AI Agents
160 12%
CI/CD
53 4%
Multimodal AI
33 2%
Reinforcement Learning
27 2%
Show all (80)
And 40 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
188 postingsAI/ML
182 postingsSales
131 postingsOperations
67 postingsProduct
65 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: $335k across 1,090 postings.
| Technology | Postings with pay | Median | vs company median |
|---|---|---|---|
| Python | 241 | $385k | +15% |
| SQL | 93 | $325k | −3% |
| Rust | 71 | $423k | +26% |
| C++ | 63 | $385k | +15% |
| JavaScript | 63 | $300k | −10% |
| LLM | 51 | $294k | −12% |
| TypeScript | 42 | $385k | +15% |
| Go | 41 | $385k | +15% |
| Linux | 39 | $405k | +21% |
| Kubernetes | 36 | $445k | +33% |
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 72 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: 2; legacy ones: 0.
How common is the OpenAI stack in its industry?
Share of the 849 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 (24%), JavaScript (9%), SQL (8%), Rust (5%), C++ (5%), as a share of the 1,370 postings of the last 12 months.
Does OpenAI use PyTorch?
Yes. PyTorch is named in 15 of 1,370 job postings (1%) and required in 11 of them.
What cloud and platforms does OpenAI use?
The cloud and platforms named in OpenAI job postings are Linux (40), AWS (36), Kubernetes (36) (postings in brackets).
What skills do you need for a Backend job at OpenAI?
Backend postings at OpenAI most often require Python (71), Rust (44), C++ (33), Go (30), out of 188 postings in the last 12 months.
Is the OpenAI tech stack changing?
Yes. YARA, YARA, DNP3, IEC 61850 first appeared in OpenAI job postings in the last six months.
How modern is the OpenAI tech stack?
OpenAI scores 72 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: 2; 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 1,370 postings of the last 12 months and were updated on Nov 12, 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: 250 technologies from 1,370 job postings", as of Nov 12, 2026. https://alion.io/company/openai/technologies