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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

Anthropic
Claude
Claude Fable 5
Claude Opus 4.8
GPT-5.4
GPT-5.4 Pro
GPT-6
Gemini 3.1 Pro
Gemini 3.5 Pro
Grok
Kimi
Kimi K2.6
Kimi K3
Microsoft Azure
MiniMax
MiniMax M2.7
Mistral AI
Nativ
OpenRouter
Paperclip

Integrations Supported

Anthropic
Claude
Claude Fable 5
Claude Opus 4.8
GPT-5.4
GPT-5.4 Pro
GPT-6
Gemini 3.1 Pro
Gemini 3.5 Pro
Grok
Kimi
Kimi K2.6
Kimi K3
Microsoft Azure
MiniMax
MiniMax M2.7
Mistral AI
Nativ
OpenRouter
Paperclip

API Availability

Has API

API Availability

Has API

Pricing Information

Pricing not provided
Free Version
Free Trial Offered?

Pricing Information

Free
Free Version
Free Trial Offered?

Supported Platforms

SaaS
Android
iPhone
iPad
Windows
Mac
On-Prem
Chromebook
Linux

Supported Platforms

SaaS
Android
iPhone
iPad
Windows
Mac
On-Prem
Chromebook
Linux

Customer Service / Support

Standard Support
24 Hour Support
Web-Based Support

Customer Service / Support

Standard Support
24 Hour Support
Web-Based Support

Training Options

Documentation Hub
Webinars
Online Training
On-Site Training

Training Options

Documentation Hub
Webinars
Online Training
On-Site Training

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/

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