New
Relay Conf ’26 is coming to New York
Real-time infrastructure
Channels, presence and history for apps and AI agents. One SDK, 180 edge regions, messages delivered in under 50ms.
For apps
Chat, live cursors and notifications with channels, presence and history in one SDK.
For agents
Stream tokens and tool calls to every connected client with the Relay MCP server.
For teams
Webhooks, usage dashboards, SSO and a 99.999% SLA when you need it.
Trusted by teams shipping in real time
Lumen
Northwind
Fieldnote
Arcadia
Quill
Monarch
Deliver every message, everywhere, in milliseconds
Lumen streams 2 billion messages a month on Relay.
Global fan-out
Presence
Message history
Webhooks v2
chat.ts
server.ts
1
import
{ Relay }
from
‘@relay/client’
2
3
const
relay =
new
Relay({ key:
process.env.RELAY_KEY
})
4
const
room = relay.
channel
(‘support:4821’)
5
6
room.
subscribe
(‘message’, (msg) =>
render
(msg))
7
room.presence.
enter
({ name:
‘Maya’
})
8
await
room.
publish
(‘message’, { text:
‘Hi there!’
})
Live delivery latency
Live
iad1 · Washington, D.C.
31ms
sfo1 · San Francisco
38ms
fra1 · Frankfurt
27ms
hnd1 · Tokyo
42ms
gru1 · São Paulo
47ms
syd1 · Sydney
44ms
Build agents that talk back in real time
Quill streams agent replies to 4 million users on Relay.
Token streaming
Push model output to every client the moment it’s generated.
Tool-call events
Broadcast tool calls and results so UIs update as agents work.
MCP server
Let coding agents create channels, stream traffic and rotate keys.
Replay
Rewind any conversation to debug exactly what an agent saw.
99.999%
uptime SLA on Enterprise
<50ms
p95 global delivery
180
edge regions worldwide
2B+
messages delivered every day
Start free, scale when you’re ready
Every plan includes global delivery, presence and the full SDK.
Hobby
$0
For side projects and prototypes.
100 concurrent connections
1M messages / month
24-hour history
Community support
Pro
Popular
$25
per month, for production apps.
10,000 concurrent connections
50M messages / month
30-day history and search
Webhooks v2 and usage alerts
Enterprise
Custom
For scale, security and support.
Unlimited connections
99.999% uptime SLA
SSO, SCIM and audit logs
Dedicated support engineer
Recently shipped
· Platform
Edge presence is generally available
Presence now runs in all 180 regions, so online status updates reach every client in under 50ms.
· API
Message history search
Full-text search across channel history with filters for sender, date and metadata.
· Agents
Relay MCP server
Let coding agents create channels, inspect traffic and roll keys with the new Model Context Protocol server.
Ship real-time chat in an afternoon
Install the SDK, open a channel and send your first message in five minutes.