New: Web Knowledge API v1

Web Knowledge for AI Agents

Fast, up-to-date web data, providing context-engineered web content with sources for real-time AI reasoning.

Working with the World’s Best AI Teams

Context for Reasoning at Scale

High-quality web context designed for reasoning and real-time scale.

Reasoning Infrastructure

Context That Matters

Context is selected, filtered, and ranked to deliver only the most relevant web signals — no irrelevant clutter.

Context That Matters

Context is selected, filtered, and ranked to deliver only the most relevant web signals — no irrelevant clutter.

Built for Reasoning

Web content is processed and shaped to maximize usefulness for LLMs, AI agents, and RAG pipelines.

Built for Reasoning

Web content is processed and shaped to maximize usefulness for LLMs, AI agents, and RAG pipelines.

Fast at Scale

Built for speed and scalability, with predictable latency and performance under real-world load.

Fast at Scale

Built for speed and scalability, with predictable latency and performance under real-world load.

Quickstart

Integrate fast, source-backed web context into your system in minutes.

Try it Yourself

Python

Node.js

Copy

# pip install seltz

from seltz import Seltz


# Initialize with API key

client = Seltz(api_key="your-api-key")


# Perform a search

response = client.search("What is Seltz?")

# Access results

for document in response.documents:
print(f"URL: {document.url}\n")
print(f"Content: {document.content}")

Enterprise-Grade by Design

Designed to meet enterprise requirements for data handling, security, and operational reliability.

Specs

Privacy by Design

End-to-end pipeline ownership ensures customer data remains within internal systems, without reliance on external providers.

SOC 2–Aligned Controls

Security, availability, and confidentiality controls are designed in alignment with SOC 2 trust service principles and requirements.

Enterprise Ready

Designed for high-throughput environments, with predictable performance and support for enterprise deployment needs.

Trusted by leading AI teams

Join teams who believe web knowledge must be fast, reliable, and built for AI systems.

“Seltz stands out for treating efficiency and systems design as first-class concerns. For teams thinking beyond demos, that mindset is rare and compelling.”

Alex Rosenberg

CEO & Co-Founder, Tako

"As we evaluate solutions, data ownership and enterprise requirements are critical. Seltz’s focus on building real web-knowledge infrastructure enables this, rather than simply wrapping technology around a search engine."

Victor Riparbelli

CEO & Co-Founder, Synthesia.io

“The emphasis on research-driven design and ownership of the full pipeline aligns closely with how we believe AI infrastructure should be built.”

Nils Reimers

VP of Search, Cohere

Support

FAQs

01

What is Seltz?

Seltz is a Web Knowledge API that provides real-time, context-engineered data from the live web, optimized for use in AI systems and applications.

02

Who is Seltz for?

Seltz is designed for teams building AI systems such as large language model applications, RAG pipelines, and autonomous agents that require reliable and efficient access to live web knowledge.

03

How is Seltz different from SERP APIs or scraping tools?

SERP APIs typically return short snippets or ranked links, which often lack the depth and continuity required by large language models or autonomous agents to reason effectively. Scraping tools, on the other hand, require prior knowledge of what to extract, operate through live page fetching, and are prone to failures due to layout changes, rate limits, and site restrictions.

04

Why focus on owning the full infrastructure stack?

Owning the full pipeline allows tighter control over quality, performance, and evolution of the system, and avoids reliance on opaque third-party services.

05

What types of applications use Seltz?

Seltz is used in applications where models need access to precise, factual, and up-to-date web information that cannot be reliably memorized during training. Large language models often struggle with exact figures, niche facts, and continuously changing data, relying instead on patterns learned from past exposure. Typical applications include systems that must reference current statistics, specifications, pricing, regulations, technical documentation, or time-sensitive information from the web. This includes AI assistants and agents that reason over live data, analytical tools that depend on accurate external facts, and knowledge systems where correctness and freshness matter more than general language understanding.

06

Is Seltz suitable for production and enterprise use?

Seltz is designed with production and enterprise requirements in mind. The platform is built to deliver predictable performance, operate reliably at scale, and support controlled deployments, including enterprise and private cloud environments. Its architecture emphasizes efficiency, operational control, and security-aligned practices, making it suitable for teams building long-lived AI systems and infrastructure rather than short-term prototypes.

Updates from Seltz

Product updates, technical insights, and announcements from Seltz.

Fast, up-to-date web data, providing context-engineered web signals with sources for real-time AI reasoning.

Fast, up-to-date web data, providing context-engineered web signals with sources for real-time AI reasoning.

Fast, up-to-date web data, providing context-engineered web signals with sources for real-time AI reasoning.