A ton of new things in Sim

Hey everyone - Emir here, co-founder and CEO of Sim. We've shipped a ton over the last few months, and rather than spam your inbox along the way, we saved it all for one rundown.

Sim is the open-source AI workspace where teams build, deploy, and manage AI agents. Here's what's new.

Talk to Sim - build everything in plain English

Chat is your command center. Sim already knows your workflows, tables, knowledge bases, files, and credentials - so you just ask. Build and deploy a workflow from a single prompt, query a CRM, search your docs, or edit a file, and watch it happen live in a split view next to the conversation. You can even email your workspace, and Sim reads the message, does the work, and replies.

A database, built in

Tables give your agents persistent, structured storage - no external database to set up. Create typed columns, query with filters, insert and upsert rows, and import a CSV with automatic type inference. Everything's available to your workflows and over the API.

Connect 40+ sources, synced automatically

Plug Google Docs, Notion, Slack, GitHub, Salesforce, Confluence, and 40+ more into your agents' memory. Sim fetches on a schedule, chunks, embeds, and keeps everything current with incremental sync. Search semantically with tag filters from any workflow or from Chat.

A built-in file system, with a real editor

Upload PDFs, Markdown, JSON, images, and more - preview and edit them right in the browser, or let Sim read and write them for you. Markdown opens in a clean inline editor with a slash menu, formatting, code blocks, and tables. Share any file with a secure link protected by a password, an email code, or SSO.

Put your agents on a schedule

Tell Sim what to do and when - "every morning, check Gmail for support tickets and add them to my table." Full calendar recurrence, minute-level timing, time zones, and pause or resume. Sim runs autonomously with access to your integrations and stops itself when the job is done.

Ready for your whole organization

As more teams build on Sim, we added the controls they need: permission groups scoped to your org, allow- and deny-lists down to individual tools and models, PII redaction across runs and logs, and per-workspace data-retention rules. Deploy, promote, and roll back agents over the API or straight from a workflow.

A fresh look, more models, more integrations

Sim got a redesign - the whole workspace, docs, and site now share one cleaner, lighter design system. We added Claude Opus 4.8, DeepSeek V4, and Mistral Medium 3.5, along with providers like Sakana, Together AI, Baseten, and Ollama Cloud, with multi-key rotation. And we connected Sim to dozens more tools - Square, Brex, Vanta, Temporal, ClickHouse, Attio, and many more.

Thanks for building with Sim. More soon.