> Falconer site index for agents: https://falconer.com/llms.txt. HTML version of this page: https://falconer.com/changelogs/september-2026-changelog/

# Falconer September 2026 changelog

> Personal Slack search across channels and DMs, ChatGPT subscriptions and bring-your-own model keys on every plan, Asana and Jira project sync, 30 one-click MCP servers, and D2 diagrams.

- Date: 2026-10-01
- Tags: release-notes, product

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## Agent and chat

- **Get fuller context from Slack.**
  Connect your personal Slack account, and Falconer can search public channels, private channels, and DMs.
  Falconer draws on discussions across your workspace, not only channels where you added it.
- **Connect missing sources from chat.**
  When Falconer needs an integration to complete a request, it can help users connect it without leaving the conversation.
- **Use a ChatGPT subscription in Falconer.**
  Users can connect their account to run supported GPT models without separate API billing.

![Falconer model picker with GPT-6.1 Sol selected under Your ChatGPT plan, below Claude Opus 5.5 and Kimi K2.6](https://falconer.com/images/changelogs/september-2026-changelog-chatgpt-plan-model-picker.webp)

## Models

- **Bring a model key on every plan.**
  Organizations can connect their preferred model provider without upgrading to Pro.
- **Use the latest frontier models.**
  Falconer now supports Opus 5.5, Sonnet 5.5 and GPT-6.1 Sol.

## Integrations and connections

- **Bring Asana and Jira projects into Falconer.**
  Connect a workspace, choose projects to sync, and ask Falconer about tasks by project, assignee, section, tag, or date.
- **Connect Falconer to more of the stack with MCP.**
  Users can choose from 30 popular servers, including PostHog, Attio, Stripe, X, and Vercel, or connect any remote MCP server by URL.
  Falconer can use the tools they expose directly in conversations.

![Add MCP server dialog with popular servers including X, Attio, PostHog, Stripe, AWS, and Vercel, plus a field to connect any remote server by URL](https://falconer.com/images/changelogs/september-2026-changelog-add-mcp-server.webp)

## Documents and diagrams

- **Create diagrams with D2 in addition to Mermaid.**
  Falconer now supports more diagramming options for architecture and system design.