Sim
Developer Tools · AI Agents
2open roles
$7Mlatest round · Series A · Nov 2025 · 11 mo ago
1backers · Y Combinator
50+team · employees, estimated range
Overview
Sim is an open-source AI workspace where companies build, distribute and govern AI agents for enterprise systems. It offers many integrations, support for major language models, permission groups, spend limits and self-hosting, and hires engineers and go-to-market staff. The company is headquartered in San Francisco, California, United States.
Funding and backers
Total raised
$7M
1 round on record
Latest round
$7M
Series A · Nov 2025 · 11 mo ago
Team
51-200
employees, estimated range
Hiring now
3
open roles
Backers
1
Y Combinator
The money's age
Fresh money
11 months since the last round · hiring slowed
Momentum
35/100
fresh money, rising traction
Last sign of life
1 mo ago
a posting or a news item
The story so fareach stage dated by its source: the company's releases, the press, registers, filings
Nov 14, 2025
Raised a round Series A $7M · led by Standard Capital · Pulse 2.0
Apr 2025
Went through Y Combinator
2025
Founded
Tractionpublic signals, read monthly
Web presence
top 2%
of 133.2M domains by links, Common Crawl
Hacker News stories
1
best: 1 points
Funding rounds
| Round | Date | Amount | Investors | Source |
|---|---|---|---|---|
| Series A | Nov 2025 | $7M | Standard Capital lead | Pulse 2.0 |
Backed byfrom the funds' portfolios and accelerator catalogs
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Jobs
$190k – $250k per year · Equity · In office · Full-Time · San Francisco
AI Agents
Knowledge Graph
Apply
$190k – $250k per year · Equity · In office · Full-Time · San Francisco
Function Calling
AI Agents
Knowledge Graph
Apply
Visa sponsorship
3
Adverts offering sponsorship in 24 months
3
Open roles in United States
In the register as Sim
Other sponsors in the same field
Whirl AI 
Diagrid 
Microsoft 
Salesforce
See 3 open roles Alert me
The employer's own adverts on Alion · checked Nov 9, 2026 · Visa details by country
Growth
Hiring Momentum
31/100
Slowing
Open positions
3
0 opened / 0 closed in 30 days
Median time-to-fill
118 days
faster than 9% of the market
ATS activity
Every ~5 hours
Today
Hiring Dynamics
0%
Hiring Focus
The percentage next to each role is its share of the company's job openings over the last 90 days; the arrow shows the shift versus the previous period.
Backend
67% ▼
Solutions
33% ▼
Activity Timeline
Added Function Calling to stack
Sep 2026
Added TypeScript to stack
Sep 2026
Added Knowledge Graph to stack
Sep 2026
Financials
Total raised
$7M
Latest round
Series A
Funding rounds
1
Funding rounds
| Round | Announced | Amount | |
|---|---|---|---|
| Series A | 2025 | $7M | Details |
Tech stack
Technologies named in job postings at Sim over the last 12 months, by layer, with the share of postings for each.
Technologies in use
10
Postings analysed
4
Stack modernity
79/100
Languages
JavaScript
Python
SQL
TypeScript
Cloud & platforms
GitHub
Perplexity
Sign in to see how your skills match this stack
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Full Sim tech stack
10 technologies · by team · pay by technology · changes · similar stacks
Connections
List
Graph
Found in company registers, site code, DNS and hiring. Each connection shows how sure we are and the evidence, with its source and date.
Shared investors
Y CombinatorVia a fund
6311 portfolio companies
Click a company to open it. Dashed lines are likely connections. The second step of the network is part of the Pro plan.
Owner
Same company
Same group
Likely
News
Tracking Secrets Through an Agent Run
How Sim tracks the secrets an agent run actually uses, carries that provenance across tools and storage, redacts values at every egress boundary, and records which run touched which credential.
Read more
Report
The Agent Is Just Another Peer
How we let an AI agent write into a live collaborative document by making it an ordinary Yjs peer, and the things that turned out to be easy, hard, and surprising.
Read more
Report
Introducing Mothership
Sim v0.6 introduces Mothership-a central intelligence layer for orchestrating your AI agents-alongside Tables, Files, Knowledge Base Connectors, and Scheduled Tasks.
Read more
Report
Sim for Enterprise
Access control, BYOK, self-hosted deployments, on-prem Copilot, SSO & SAML, whitelabeling, Admin API, and flexible data retention-enterprise features for teams with strict security and compliance requirements.
Read more
Report
Introducing Sim v0.5
This new release brings a state of the art Copilot, seamless MCP server and tool deployment, 100+ integrations with 300+ tools, comprehensive execution logs, and realtime collaboration-built for teams shipping AI agents in production.
Read more
Report
Sim.ai: $7 Million Series A Closed To Advance Development Of Its Agentic AI Platform
Sim.ai has raised a $7 million Series A round led by Standard Capital, marking a significant step forward for the Y Combinator-backed startup as it scales its agentic AI platform. The latest financing round underscores growing investor confidence in the a
Read more
Report
$7M Series A
We're excited to share that Sim has raised a $7M Series A led by Standard Capital to accelerate our vision for agentic workflows.
Read more
Report
Realtime Collaboration
A high-level explanation into Sim realtime collaborative workflow builder - from operation queues to conflict resolution.
Read more
Report
Inside the Sim Executor - DAG Based Execution with Native Parallelism
How we built a DAG-based execution engine with native parallel processing, intelligent edge routing, and stateful pause/resume capabilities
Read more
Report
Offices
Where the company hires and what each office is for
Cities
1
Hiring now
1
Countries
1
Busiest office
San Francisco
San Francisco
United States
HQ
Sim
3 open roles 3 posted in 90 days 33% engineering 50-200 est. staff $250k Avg Salary
hires for Backend, Industrial Engineering, Solutions
80 Langton St, San Francisco, 94103