Get everything you need from a modern CDN — from effortless scale and built-in security to programmable control and full visibility.
Govern. Control. Protect.
Fastly for AI
One platform to build, secure, and deliver your apps, AI, and data inline, in single-digit milliseconds, on the network already carrying your traffic.
Trusted by the world's leading companies
Powering the best AI experiences
From delivery to deployment, observability and security, Fastly delivers the speed, control and scale you need to power AI experiences that your users, and your budget, can count on.
One platform for your AI needs
AI is part of everything you do - in what you power, what you build, and within your own digital footprint. Fastly gives you command over all three with speed, visibility and control - on one platform.
Govern
Full visibility into every AI call and crawl
AI Runtime Control routes every model call through virtual keys with budget caps, rate limits, and automatic failover - on your terms.
Control
Capture every single AI call your business makes
AI Firewall delivers deterministic inline detection - at the edge - shielding your apps and APIs from attacks targeting AI use-cases
Protect
Block unwanted AI crawlers without stopping the ones you trust
Not all AI traffic is bad. Fastly Bot Management provides deep visibility that enables organizations to welcome the automation they want, and rate limit, block or monetize the traffic they don't
Why AI teams build on Fastly
With AI traffic growing 6.5X faster than human traffic, a platform to control AI is no longer optional. A single control panel for AI operations, insights and security.
Unified AI visibility
Searchable prompt and completion logs, token attribution, and real-time traffic insights-no blind spots.
Lower AI costs
Virtual keys with budget caps, rate limits, and per-session attribution cut unaccounted spend across vendors.
Content protection
Control how AI crawlers access your content on your terms — block, throttle, deceive, or allow.
Inline AI security
AI Firewall stops prompt injection at the edge in real time. Deterministic detection, no GPU required.
API contract enforcement
Schema enforcement holds agentic traffic to the contract you already published. Log it or block it, service by service.
Drop-in simplicity
Route hundreds of public and self-hosted models through one endpoint. Bring your own keys, no pipeline changes.
Fastly for AI
Purpose-built products to help you accelerate, protect, and operate AI on the same edge cloud platform.
AI Runtime Control
Intelligent control plane providing AI traffic visibility, governance, and control
AI Firewall
Protect AI-enabled applications from LLM-based threats
AI Bot Management
Detect and control the AI crawlers scraping your content, without consent or credit.
API Enforcement
Validate incoming API requests against schemas you define; log or block requests that don't conform
Fastly MCP Server
Manage your Fastly infrastructure, security settings, and performance monitoring through natural language interactions.
Fastly Agent Toolkit
An open source collection of AI agent skills that teach your coding agent how to work with Fastly.
Why your AI workloads need a caching layer
AI workloads can be more than an order of magnitude slower than non-LLM processing. Your users feel the difference from tens of milliseconds to multiple seconds, and over thousands of requests your servers feel it too. Semantic caching maps queries to concepts as vectors, caching answers no matter how a question is asked. It's a recommended best practice from major LLM providers — and AI Accelerator makes it easy.
Real results on Fastly
"Whether you are a small shop or a mega enterprise, there is something in the Fastly platform that your service and application teams can leverage to drive customer value."
Jefferson Frazer
Director of Cloud Infrastructure
68%
Lower storage costs
115 PB
Content delivered in 90 days
"Fastly's security solutions greatly protect us from malicious attacks and also protect our origin from excessive traffic, without impacting customer experience."
Yanyan Ni
Principal Engineer, Site Reliability Engineering
90%
Reduction in bot traffic
250+
Sites protected
"Fastly Bot Management significantly reduced our unwanted bot traffic. The ease of use in rule building, rapid visualization of signals, and behavioral analysis and mitigation all justified the investment."
Randy Naraine
Cybersecurity Architect
30-50%
Bot traffic reduction
3 days
35 sites migrated
"As an engineering leader, I care deeply about the interplay between the developer experience and the security experience. Building trust with developers is easier with Fastly."
Matt Brandman
Senior Engineering Manager, Platform Security
Featured AI use cases
Serve chatbots and virtual assistants faster by caching semantically similar responses at the edge.
Speed up AI-powered search and knowledge bases while cutting redundant inference calls.
Run low-latency agents and real-time personalization on Fastly Compute and the Key Value Store.
Featured resources
Detect and block AI bots that scrape website content without consent or attribution.
Govern your AI traffic and control your spend with an intelligent control plane for the agentic web.
Protect AI-enabled applications from LLM-based threats
FAQs
What is Fastly's AI Accelerator and how does it improve AI performance?
AI Accelerator is a semantic caching solution for LLM APIs used in generative AI applications. AI request handling sits at the edge, using intelligent semantic caching and optimized delivery so organizations provide faster AI responses. Fewer trips to the LLM API also save on token costs.
What is semantic caching and how does it optimize LLM costs?
Semantic caching identifies and reuses similar or equivalent AI responses rather than caching only exact matches. It breaks a query into meaningful concepts to match future queries that are semantically similar. Applied at the edge, it reduces redundant inference calls, lowers token costs, and delivers faster responses.
How does AI Runtime Control help maintain AI application reliability across providers?
AI Runtime Control lets teams configure an ordered set of model targets behind a virtual key. If the primary target continues to return errors after a retry, AI Runtime Control automatically routes the request to a configured fallback, helping keep customer-facing AI applications available without requiring failover logic in each application.
How does Fastly AI integrate with my existing AI stack?
Fastly is a high-performance delivery and optimization layer that sits in front of your existing AI infrastructure and LLM providers. Because it acts as a performance-enhancing proxy rather than a model replacement, teams accelerate AI workloads without changing frameworks, pipelines, or model choices.
Is Fastly AI suitable for enterprise, production workloads?
Yes. Fastly AI is built for enterprise-scale applications that demand reliability, security, and predictable performance, with the controls, observability, and scalability required to run AI in production while delivering faster experiences to end users globally.
How does AI Runtime Control help prevent runaway AI agents and unexpected usage?
AI Runtime Control applies independent requests-per-minute and tokens-per-minute limits to individual virtual keys. These controls can contain excessive consumption caused by autonomous agent loops, software errors, attacks, or sudden traffic spikes before they exhaust provider quotas or generate uncontrolled costs.
Govern. Control. Protect.
One platform to build, secure, and deliver your apps, AI, and data.