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What is Spanlens?

Spanlens is an open-source observability tool under the MIT license that allows developers to seamlessly monitor their applications' interactions with various services, including OpenAI, Anthropic, and others. The integration is remarkably straightforward; developers can either modify the client's baseURL to point to the Spanlens proxy with a single line of code or use the command "npx @spanlens/cli init," which activates a wizard for automatic code adjustments. After integration, the platform logs all requests in detail, tracking essential metrics such as model type, token counts, latency, costs, and the entire prompt and response body, while also effectively reconstructing streaming outputs. The platform's dashboard converts this extensive log information into valuable operational insights. With cost tracking capabilities, users can analyze their spending by specific requests, models, and users, along with differentiating prompt-cache tokens to clarify actual savings beyond total costs. Furthermore, agent tracing illustrates multi-step workflows through Gantt waterfalls and node-and-edge graphs, highlighting critical paths to help developers identify the slowest dependencies in complex scenarios. This thorough approach not only improves visibility but also equips users with the tools necessary to refine their model interactions for enhanced efficiency and effective cost management, fostering a more productive development environment overall.

What is Pi Agent?

Pi is an efficient terminal coding environment that is built to integrate effortlessly with developers' workflows, allowing them to work naturally rather than having to adapt to its framework. It features solid default configurations while remaining lightweight and offering a wide range of customization possibilities, enabling users to expand Pi through various extensions, skills, prompt templates, themes, and shareable packages from npm or git. When teams need particular commands, tools, providers, workflows, or UI changes, they can easily direct Pi to create these elements, make real-time modifications, refresh, and resume their tasks without any delays. Pi's flexibility is evident in its support for various modes including interactive, print/JSON, RPC, and SDK, allowing it to serve as a full-fledged terminal UI, a programmable command interface, a JSON event stream, or a readily embeddable agent. Additionally, it is compatible with over 15 providers and a multitude of models, such as Anthropic, OpenAI, Google, Azure, Bedrock, Mistral, Groq, Cerebras, xAI, Hugging Face, Kimi For Coding, MiniMax, OpenRouter, Ollama, and more, enabling seamless mid-session model switching that enhances both flexibility and user satisfaction. This versatility makes Pi an essential resource for developers aiming to customize their coding environment precisely according to their preferences and requirements, ultimately fostering a more productive and enjoyable programming experience.

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Integrations Supported

Integrations Supported

Amazon Bedrock
Claude Fable 5
Claude Haiku 5.5
Claude Opus 4.6
Claude Opus 4.7
Claude Opus 4.8
GLM-5.3-Flash
GPT-5.4 Pro
GPT-5.6 Luna
GPT-5.6 Terra
GPT-6 Sol
Holo4
Kimi K2.5
Kimi K3
MiniMax
MiniMax M2.7
Nativ
OpenRouter
Oqoqo

API Availability

API Availability

Pricing Information

Pricing not provided

Pricing Information

Free
Free Version

Supported Platforms

SaaS

Supported Platforms

Windows
Mac
Linux

Customer Service / Support

Not specified

Customer Service / Support

Web-Based Support

Training Options

Not specified

Training Options

Documentation Hub

Company Facts

Organization Name

Spanlens

Date Founded

2026

Company Location

South Korea

Company Website

spanlens.io

Company Facts

Organization Name

Pi

Company Location

United States

Company Website

pi.dev/

Categories and Features

AI Observability

Not specified

Categories and Features

AI Agents

Not specified

AI Coding Agents

Not specified

AI Coding Assistants

Not specified

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