Pi 1.0.1

ChangelogRelease notesOct 3, 2026Pi 1.0.1GitHub releasenpmNew Features

Nix flake — nix run github:earendil-works/pi/stable runs the latest release, and nix profile add github:earendil-works/pi/stable installs it. See Install pi. Project overrides for MCP servers — .pi/mcp.json and /mcp can enable, disable, or change the exposure of a user-level server for one project. See Configure servers. MCP Client ID Metadata Documents — oauth.clientRegistration: "cimd" lets authorization servers allow pi by its document URL instead of dynamic registration. See Authenticate with OAuth. Tool renderers for any tool — pi.registerToolRenderer() draws calls to tools that are not registered yet, such as MCP tools in resumed sessions. See Tool rendering. Cloudflare Clef classifiers — @cf/cloudflare/clef and @cf/cloudflare/clef-flash are usable from codemode scripts and extensions. See Use classifier models.

Added

Added a copy key (app.message.copy, default ctrl+x) to OAuth sign-in screens in /login, /mcp, and /mcp login, which copies the sign-in URL when the browser cannot be opened or the wrapped link cannot be selected. Added oauth.clientRegistration: "cimd" for MCP servers, which identifies pi with its Client ID Metadata Document on pi.dev instead of dynamic client registration, so authorization servers can allow pi by URL (#10302) Added project overrides for user-level MCP servers: a .pi/mcp.json entry without command or url sets only enabled, exposure, and toolExposure of the user-level server, and /mcp can enable or disable a server for the current project (#10277) Added Cloudflare's Clef and Clef Flash classifier models to cloudflare-workers-ai, usable from codemode scripts and extensions (#10316 by @ndisidore, #10322 by @RealAlexandreAI) Added pi.registerToolRenderer(), which chooses how calls to a tool are drawn, including tools that are not registered (#10285) Added a Nix flake for macOS and Linux: nix run github:earendil-works/pi/stable runs the latest release, and nix profile add github:earendil-works/pi/stable installs it. See Install pi (#9137)

Changed

pi update on global npm installations now recommends migrating to the managed installation from the pi.dev installer, which pins all dependencies. Anthropic tools added or redefined mid-conversation are now defined inline in the conversation, so redefining a tool under the same name keeps the prompt cache instead of resending the full tool list.

Fixed

Fixed installations resolving vulnerable brace-expansion 5.0.9 by pinning brace-expansion 5.0.12 as a direct dependency (GHSA-q2hr-2g5m-vwhr, GHSA-qhr7-859c-m2p7, GHSA-6j4f-fj2g-mc7p) (#10288) Fixed a trailing comma in --models adding an extra model to the model cycle (#10334) Fixed a codemode script that prints in a loop crashing pi by running out of memory: a script fails once its output passes 16 Mi characters or 100000 items (#10283) Fixed JPEG, GIF, and WebP images rendered by extensions through Image not appearing in Kitty, Ghostty, WezTerm, and Warp (#10292) Fixed MCP tool calls in resumed sessions and HTML exports rendering fully expanded until their server connected, or for good if it never did (#10285) Fixed fullscreen Kitty images collapsing to a one-row strip after scrolling in WezTerm (#10319) Fixed "Selected model is at capacity" provider errors ending the turn instead of being retried (#10278) Fixed Cloudflare AI Gateway Claude models failing with a 404 by using dashed model IDs (claude-opus-5-5 instead of claude-opus-5.5) Fixed Sign in with ChatGPT continuing when its callback port is taken by another login, which made the browser show "OAuth state mismatch"; it now fails with a port-in-use error (#10265) Fixed Amazon Bedrock OpenAI models costing requests above 272k input tokens at the short-context rate; Bedrock models now include the pricing tiers listed on models.dev (#10326) Fixed Amazon Bedrock Claude requests failing with "Invalid signature in thinking block" after the system prompt or tools changed (#10324) Fixed Together DeepSeek V4 Pro losing its thinking level controls after Together renamed it to deepseek-ai/DeepSeek-V4-Pro-0813 (#10336 by @cv) Fixed the default NVIDIA model pointing at nvidia/nemotron-3-super-120b-a12b, which NVIDIA no longer serves; the default is now nvidia/nemotron-3-ultra-550b-a55b

Removed

Removed npm-shrinkwrap.json from the published package. npm installations no longer pin transitive dependencies, and library consumers can now override them. Use the pi.dev installer for pinned installations (#5653)