Pi 1.0 and Pi Durable
Pi 1.0 brings a fullscreen terminal, built-in MCP with Codemode, deferred tools, and image generation. Pi Durable is a separate experimental package for persistent, recoverable agent applications.
Earendil
Pi
Extensible terminal coding agent with multi-provider model access, skills, built-in MCP, and Codemode for composing tools in JavaScript.
CLIActiveOpen sourceBYOKMCP Yes
Recent product updates
Reviewed
Selected releases and additions, with links to the original announcements.
n/a
Attributed output
No signal we can detect yet
n/aAttributed outputNo signal we can detect yetCommits and PRs on public GitHub provably produced by this agent. Exact if it is visible through its own bot or workflow, an estimate if measured through attribution it declares (these can swing 30 to 40 percent between measurement runs at multi-million scale), and a floor either way.Index rank · all agents
#28 of 40 CLI agents
#32Index rank · all agents#28 of 40 CLI agentsRanked by agent-opened PRs in the trailing 4 complete weeks, matching the index. Agents without a tracked PR series follow, ordered by total attributed output. Other filters or sorts change the list position.n/a
Business signal
No sourced business metric
n/aBusiness signalNo sourced business metricFree OSS + BYOK
Entry price
Provider/local infrastructure
Free OSS + BYOKEntry priceProvider/local infrastructure4,020,296
npm demand/wk
Adjusted from raw npm channel
4,020,296npm demand/wkAdjusted from raw npm channelWeekly package downloads as an install-demand floor; adjusted when the vendor's main install channel is no longer npm.46,578,598
npm installs to date
Since 2026-05-04
46,578,598npm installs to dateSince 2026-05-04Total npm downloads of this agent's package(s) summed across every tracked week since it was first published. A floor, like the weekly figure. Where a one-week automated/CI burst inflated the total, the baseline-only figure is shown too.npm Installs Over Time
Weekly npm downloads since 2026-05-04, the install-demand trajectory.
Market
Developer output
No signal we can detect yet
Pi works through the developer's own identity and leaves nothing public we can currently attribute to it on its output, so its public footprint is invisible \u2014 not absent, and not a sign of low usage. Agents in this group are ordered by their sourced business and traction signals instead.
- Index rank · all agents
- #32 of 47 · #28 among CLI agents
- Demand share
- 9.4% of tracked npm demand floor
- Business signal
- No sourced business metric
- GitHub share
- 6.5% of tracked stars
- npm channel
- 2.7M raw downloads/week (npm primary)
Best fit
Open-source agent buildersLocal/vLLM workflowsTUI/web UI experimentationProvider-agnostic teams
- Pi is one of the largest open-source coding-agent/toolkit projects surfaced by GitHub search.
- GitHub stars are a stronger signal than npm downloads because the package visible on npm is not the main distribution channel for the current repo.
npm channel caveat: npm primaryExpandHide
Pi has a public npm install channel.
Counts public npm package downloads only. Other install channels, caches, mirrors, IDE extensions, and enterprise distribution are not included.
- Demand floor
- 4M / wk
- Latest npm week
- 2.7M
- Peak npm week
- 5.2M
- 4-week average
- 4M
Latest public npm snapshot
Complete Mon-Sun week when cron-backed
Observed public npm range
As of 2026-10-18
All sourced signals (1)ExpandHide
| Signal | Value | Type | Confidence |
|---|---|---|---|
| GitHub stars | 111,659 | Public metric | High |
Pricing And Economics
ExpandHide
Pricing snapshot: 2026-06-07. Check the vendor for current terms.
Pi is open-source agent software; runtime cost depends on configured providers or local/vLLM infrastructure.
- Entry price
- Free OSS + BYOK
- Top self-serve price
- n/a
- Pricing unit
- Provider/local infrastructure
- Token transparency
- BYOK/API retail
- Included usage
- No hosted plan is published for the open-source repo.
- Overage path
- Provider or infrastructure-specific.
Retail Token Equivalent
No bundled token quota.
| Plan | Price | Allowance | Unit | Token / Overage Notes |
|---|---|---|---|---|
| Pi open source | $0 software | Open-source agent/toolkit; bring provider or local runtime. | software |
Summary checked 2026-10-02.
Pi is open-source; usage cost depends on the connected LLM provider, local model, or vLLM deployment.
- npm install demand for @earendil-works/pi-coding-agent is a visible signal alongside GitHub stars; usage cost still depends on the connected provider.
- Provider cost depends on the model endpoint you configure.
Product
Providers
AnthropicOpenAIGoogleOpenRouterAWS BedrockAzurexAIOpenAI-compatibleOllama
Model families
GPTClaudeGeminiOpenAI-compatible modelsLocal models
Capabilities
Terminal agentExtensionsSkillsMCPCodemodeDeferred tool loadingImage generationSession treesRPC / SDKLocal models
Tradeoffs
- Provider or subscription authentication required
- Subagents, plan mode, and permission gates require extensions or custom workflows
- Pi Durable is a separate experimental package