Ably vs Pusher vs Soketi: Best Realtime Infrastructure (2026)

Adding real-time features (live updates, notifications, chat, collaboration) requires WebSocket infrastructure. You can build it yourself, or use a managed service. Ably, Pusher, and Soketi represent three tiers: enterprise, standard, and open-source.

Quick Comparison

Feature	Ably	Pusher	Soketi
Type	Enterprise managed	Managed SaaS	Open-source (self-host)
Protocol	WebSocket + SSE + MQTT	WebSocket	WebSocket (Pusher-compatible)
Guaranteed delivery	Yes (message ordering)	Best-effort	Best-effort
Message history	Yes (persist + replay)	No	No
Presence	Yes	Yes	Yes
Channels	Unlimited	Limited by plan	Unlimited
Self-host	No	No	Yes
Free tier	6M messages/mo	200K messages/day	Free (self-host)
Pricing	From $29/mo	From $49/mo	Free + server costs

Ably: Enterprise Real-Time

Ably is the most feature-rich real-time platform, designed for applications where message delivery guarantees matter.

Strengths

• Message ordering and delivery guarantees. Messages arrive in order and are guaranteed delivered. Critical for financial data, collaboration, and gaming.
• Message history and persistence. Replay missed messages when clients reconnect. No data loss during disconnections.
• Multi-protocol. WebSocket, SSE, MQTT, and REST. Connect from any device or environment.
• Global edge network. 16+ PoPs worldwide with intelligent routing.
• Integrations. Webhooks, serverless function triggers, queue integrations (RabbitMQ, Kafka, AMQP).
• Presence and state. Track who's online with rich presence data.

Weaknesses

• Most expensive. Enterprise pricing reflects enterprise features.
• Complexity. More concepts to learn than simpler alternatives.
• No self-hosting. Fully managed only.

Best For

Applications requiring guaranteed message delivery: financial dashboards, collaborative editing, gaming, IoT, and mission-critical real-time features.

Pusher: The Developer Standard

Pusher has been the go-to real-time service since 2010. Simple API, great docs, and wide framework support.

Strengths

• Simplest API. Publish a message in one line of code. Subscribe in two.
• Channels ecosystem. Pusher Channels (real-time), Beams (push notifications) — complementary products.
• Framework support. Official SDKs for every major language and framework. Laravel, Rails, Django, Express — all have first-class Pusher integration.
• Documentation. The best docs in the real-time space. Comprehensive tutorials for every framework.
• Proven at scale. Used by thousands of apps. Reliable and well-understood.

Weaknesses

• No message persistence. If a client is disconnected, they miss messages. No replay capability.
• Best-effort delivery. No ordering guarantees.
• Connection limits. Plans cap concurrent connections. Can get expensive for high-concurrency apps.
• Pricing scales steeply. The jump from free to paid is significant.
• No self-hosting. Vendor lock-in.

Best For

Standard real-time features: notifications, live updates, simple chat, activity feeds. The easiest to implement and most widely supported.

Soketi: Self-Hosted Pusher

Soketi is an open-source WebSocket server that's fully compatible with the Pusher protocol. Use Pusher's client libraries with your own infrastructure.

Strengths

• Free and open-source. MIT license. No per-message costs.
• Pusher-compatible. Drop-in replacement. Use existing Pusher client SDKs (pusher-js) and server libraries.
• Self-hosted. Full control over data and infrastructure. Deploy on your own servers.
• Horizontal scaling. Scale with Redis adapter for multi-server deployments.
• Low latency. No third-party network hop — your server talks directly to your WebSocket server.
• Docker and Kubernetes ready. Easy deployment on modern infrastructure.

Weaknesses

• You manage everything. Scaling, monitoring, uptime, SSL certificates — all on you.
• No message persistence. Same limitation as Pusher.
• Smaller community. Less battle-tested than Ably or Pusher.
• No SLA. Your uptime is your responsibility.
• Limited advanced features. No built-in analytics, webhooks are basic, no multi-protocol support.

Best For

Teams with DevOps capability who want real-time without per-message costs. Perfect for high-volume apps where Pusher pricing is prohibitive.

Pricing Deep Dive

Ably

• Free: 6M messages/month, 200 peak connections
• Standard: From $29/month (10M messages)
• Pro: Custom pricing
• Enterprise: Custom

Pusher

• Sandbox (Free): 200K messages/day, 100 connections
• Startup: $49/month (10M messages/day, 500 connections)
• Business: $99/month (100M messages/day, 2K connections)
• Growth: $199/month (unlimited messages, 10K connections)

Soketi

• Self-hosted: Free (your server costs: ~$5-50/month depending on scale)

Cost at scale example (1M messages/day):

• Ably: ~$29-99/month
• Pusher: $49-99/month
• Soketi: $5-20/month (VPS cost)

Migration: Pusher → Soketi

Since Soketi is Pusher-compatible, migration is straightforward:

1. Deploy Soketi (Docker: docker run -p 6001:6001 soketi/soketi:latest)
2. Update your Pusher client config to point to your Soketi server
3. Update server-side Pusher config with Soketi's host and credentials
4. Test all channels and events
5. Remove Pusher dependency

No code changes to your application logic — only connection configuration.

FAQ

Do I need a real-time service at all?

For simple cases (new data every few seconds), polling or Server-Sent Events might suffice. Real-time services are worth it when you need: instant updates, presence (who's online), bi-directional communication, or guaranteed delivery.

Can Supabase Realtime replace these?

If you're already on Supabase, its Realtime feature (database change notifications + broadcast) covers many use cases. It's not as feature-rich as Ably but handles basic real-time needs well.

Which is best for chat?

Ably for guaranteed delivery and message history. Pusher for simplicity. Soketi for cost-effectiveness. For a full chat solution, also consider dedicated chat APIs (Stream, Sendbird).

Can I start with Pusher and switch to Soketi later?

Yes — this is Soketi's main selling point. Start with Pusher's managed service, then switch to self-hosted Soketi when costs justify it. Same client SDKs, minimal code changes.

The Verdict

• Ably for mission-critical real-time (financial data, collaboration, gaming). Pay for guarantees.
• Pusher for standard real-time features with the easiest implementation. The safe default.
• Soketi for cost-conscious teams comfortable with self-hosting. Pusher compatibility is the killer feature.

Start with Pusher for simplicity. Switch to Soketi when your message volume makes Pusher expensive. Choose Ably when delivery guarantees are a business requirement.