Retell AI tech stack

Retell AI builds mostly with Python, JavaScript, TypeScript, Node JS. Its stack also includes Figma, OpenAI, React.js, PyTorch. Python is named in 17 of the 45 job postings Retell AI published in the last 12 months (38%). Counted by Alion from the job postings of Retell AI, updated Sep 28, 2026.

Source: Alion Coverage: the company's job postings of the last 12 months Sep 28, 2026
Technologies in use
38
Postings analysed
45
Open now
28
Modernity
86 /100
New in 6 months
8

What programming languages does Retell AI use?

Python is named in 38% of job postings at Retell AI, followed by JavaScript (29%), TypeScript (24%), Node JS (11%).

Python 17 38% required in 71% · 11 open now · since Dec 2024
JavaScript 13 29% required in 85% · 8 open now · since Dec 2024
TypeScript 11 24% required in 73% · 7 open now · since Oct 2025
Node JS 5 11% required in 40% · 4 open now · since Dec 2024

What frameworks and libraries does Retell AI use?

React.js is named in 9% of job postings at Retell AI, followed by PyTorch (7%).

React.js 4 9% required in 75% · 3 open now · since Dec 2024
PyTorch 3 7% required in 67% · since Oct 2025

What cloud and platforms does Retell AI use?

Figma is named in 9% of job postings at Retell AI, followed by OpenAI (9%), Twilio (4%), AWS (4%).

Figma 4 9% required in 100% · 1 open now · since Jan 2026
OpenAI 4 9% required in 100% · 2 open now · since Jul 2026
Twilio 2 4% required in 50% · 1 open now · since Aug 2026
AWS 2 4% optional · since Aug 2025
GCP 2 4% optional · since Aug 2025
Perplexity 1 2% required in 100% · 1 open now · since Aug 2026
Azure 1 2% optional · since Aug 2025
Framer 1 2% optional · since Aug 2026
Show all (12)
Okta1
Rive1
Webflow1
Wiz1

What developer tools does Retell AI use?

Claude Code is named in 2% of job postings at Retell AI, followed by Cursor (2%), Storybook (2%), Adobe After Effects (2%).

Claude Code 1 2% required in 100% · since May 2026
Cursor 1 2% required in 100% · since May 2026
Storybook 1 2% required in 100% · since May 2026
Adobe After Effects 1 2% optional · since Aug 2026

What AI and ML technologies does Retell AI use?

LLM is named in 29% of job postings at Retell AI, followed by Claude (11%), Gemini (9%), ChatGPT (2%).

LLM 13 29% required in 92% · 7 open now · since Feb 2025
Claude 5 11% required in 100% · 2 open now · since May 2026
Gemini 4 9% required in 100% · 2 open now · since Jul 2026
ChatGPT 1 2% required in 100% · 1 open now · since Aug 2026

Which engineering practices does Retell AI ask for?

AI Agents is named in 93% of job postings at Retell AI, followed by Voice Agents (89%), Machine Learning (7%), Multimodal AI (4%).

AI Agents 42 93% required in 100% · 26 open now · since Dec 2024
Voice Agents 40 89% required in 100% · 28 open now · since Dec 2024
Machine Learning 3 7% required in 100% · since Oct 2025
Multimodal AI 2 4% required in 100% · since Apr 2026
Post-training 2 4% required in 100% · since Apr 2026
Pre-training 2 4% required in 100% · since Apr 2026
Text-to-Speech 2 4% required in 100% · since Apr 2026
CI/CD 1 2% required in 100% · since Aug 2025
Show all (12)
DNS1
IAM1
Synthetic Data1
TCP/IP1

What does each Retell AI team work with?

The technologies each team's postings require most often, with the number of postings that require them.

Backend

9 postings
LLM4
Python4
Claude3
Gemini3
JavaScript3
OpenAI3

Solutions

9 postings
LLM5
JavaScript4
Python4
TypeScript2

AI/ML

4 postings
LLM2
PyTorch2

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How much does Retell AI pay by technology?

Median stated pay of the postings that name each technology, against the median of all Retell AI postings with stated pay: $250k across 41 postings.

TechnologyPostings with payMedianvs company median
Python16$255k+2%
JavaScript12$280k+12%
LLM11$300k+20%
TypeScript10$300k+20%
Node JS5$300k+20%

How is the Retell AI 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.

First appeared
TwilioAug 2026
GeminiJul 2026
OpenAIJul 2026
ClaudeMay 2026
Multimodal AIApr 2026
Post-trainingApr 2026
Pre-trainingApr 2026
Text-to-SpeechApr 2026

How modern is the Retell AI stack?

Cutting-edge AI adopter 86/100

Retell AI scores 86 out of 100 (Cutting-edge). The score averages how current each technology in the stack is and adds weight for AI adoption. AI technologies in the stack: 4; legacy ones: 0.

How common is the Retell AI stack in its industry?

Share of the 994 companies in the same industries, whose stack Alion knows, that use each technology.

Python67%
JavaScript57%
LLM54%
TypeScript53%
Claude35%
Node JS28%
Figma23%
Gemini9%
OpenAI19%
React.js42%

Questions about the Retell AI tech stack

What programming languages does Retell AI use?

The languages named in Retell AI job postings are Python (38%), JavaScript (29%), TypeScript (24%), Node JS (11%), as a share of the 45 postings of the last 12 months.

Does Retell AI use React.js?

Yes. React.js is named in 4 of 45 job postings (9%) and required in 3 of them.

What cloud and platforms does Retell AI use?

The cloud and platforms named in Retell AI job postings are Figma (4), OpenAI (4), Twilio (2) (postings in brackets).

What skills do you need for a Backend job at Retell AI?

Backend postings at Retell AI most often require LLM (4), Python (4), Claude (3), Gemini (3), out of 9 postings in the last 12 months.

Is the Retell AI tech stack changing?

Yes. Twilio, Gemini, OpenAI, Claude first appeared in Retell AI job postings in the last six months.

How modern is the Retell AI tech stack?

Retell AI scores 86 out of 100 (Cutting-edge). The score averages how current each technology in the stack is and adds weight for AI adoption. AI technologies in the stack: 4; legacy ones: 0.

How does Alion know the Retell AI tech stack?

Alion reads every job posting Retell AI publishes and tags the technologies each one names. The figures on this page count the 45 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, "Retell AI tech stack: 38 technologies from 45 job postings", as of Sep 28, 2026. https://alion.io/company/retell-ai/technologies

Licence: CC BY-SA 4.0JSON