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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 Heabsy?

A company based in the EU provides an inference API that is compatible with models from OpenAI and Anthropic. Their leading model operates on dedicated GPUs housed in EIA data centers, ensuring that all data is processed exclusively in memory—thus no prompts or completions are stored or logged, and they are not employed for training purposes. Users can also access routed open models from various third-party providers using the same key, with these models clearly labeled for transparency. The service is complemented by a Data Processing Agreement (DPA) and an invoice issued by the EU entity. Key features include streaming capabilities, tool calling, structured output, and a publicly available DPA along with a list of sub-processors, as well as a pricing structure based on token usage. In a performance measurement conducted on the live system in August 2026, it was found that the service could process 176 tokens per second for each stream, generating the first token in merely 0.3 seconds, which underscores its remarkable efficiency and speed. This level of performance is essential for developers in search of dependable and swift AI solutions for their applications, showcasing the importance of reliable metrics in the fast-paced tech landscape.

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Media

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Integrations Supported

Additional information not provided

Integrations Supported

Additional information not provided

API Availability

API Availability

Pricing Information

Pricing not provided

Pricing Information

$0.04 per 1M input tokens
Free Version

Supported Platforms

SaaS

Supported Platforms

SaaS

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

Heabsy

Date Founded

2014

Company Location

Slovakia

Company Website

heabsy.com

Categories and Features

AI Observability

Not specified

Categories and Features

AI Inference

Not specified

LLM API

Not specified

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