My take
Here is the honest truth about this lane: Choose an IaaS vendor for your WebRTC traffic only if they offer a unique feature not supported by other CPaaS vendors. Why? Because their attention span to you as a customer will be the lowest of all other alternatives.
Adding real-time comms inside your cloud?
The three are close enough that the right answer is usually "the cloud you're already on" - but the gaps (Teams interop, telephony, edge routing, AI agents, billing) decide it. I can help you map it to where you already run.
| Tool ▲ | AI Visibility iHow often AI names this cloud for real-time comms - the average of three models from 0 to 10: Claude Sonnet 4.6, Gemini 2.5 Flash and GPT-4o. PRESENCE-BASED; recommend-vs-mention deferred. Eligibility model: each cloud is scored on the generic cross-cloud prompts plus its own cloud-named prompt, so numbers run high by design. Cloudflare's relative gap is the signal.▲ | Quality iA measured score from 0 to 100, blending documentation depth (docs) and feature coverage (feat) across multiparty video, audio, screen share, recording, SDKs, session management, cloud-native auth, webhooks, in-account billing, and observability. The three are a statistical dead heat.▲ | Agent-ready iWhether the vendor ships something that lets an AI agent operate it: an MCP server or a hand-authored llms.txt. All three score tier 2 - every cloud ships an official MCP server and/or first-party CLI. This is table-stakes for a hyperscaler, so it does not differentiate the lane.▲ | Pricing iIndicative entry pricing gathered June 2026, billed in each cloud's own model (per-minute vs per-GB) - NOT comparable across vendors and not a score. Read it as "billed via your cloud", not a like-for-like rate.▲ | Tsahi's note ▲ |
|---|---|---|---|---|---|
 Microsoft ACS | 8.3avg  10 7.5 7.5 | 94 100%90% | ✓Azure MCP + az CLI | $0.004/minper participant-min (Azure) | Azure + Teams |
 Amazon Chime SDK | 8.3avg 7.5107.5 | 92 95%90% | ✓AWS MCP + CLI | $0.0017/minper attendee-min (AWS) | AWS, Full-Stack |
 Cloudflare Realtime | 5.0avg 555 | 91 95%88% | ✓llms.txt + MCP | $0.05/GBSFU+TURN; 1k GB/mo free | Edge, AI-Quiet |
Documentation depth
Feature coverage
Claude Sonnet 4.6
Gemini 2.5 Flash
GPT-4o
Claude Sonnet 4.6
Gemini 2.5 Flash
GPT-4o
MEASURED
- Quality and Agent-ready come from my June 2026 evaluation run
- AI Visibility is presence-based; the recommend-vs-mention read is deferred
- None of these is composited into a single score
VERIFY
- Pricing is each cloud's own billing model and is NOT comparable across vendors (ACS and Chime bill per participant-minute; Cloudflare bills per-GB plus a per-minute RealtimeKit tier)
- Read it as "billed via your cloud", not a like-for-like rate
- Confirm current rates and limits in your own cloud account
IMPORTANT NOTES
- Amazon Chime SDK (above) is the meetings platform. Amazon Kinesis Video Streams (WebRTC) is a low-level signaling + STUN/TURN primitive for device, camera and peer-to-peer streaming - no SFU multiparty, no screen share, no participant model. It is deliberately not scored against the three above (it would invite a false comparison).
- Google Cloud has no first-party WebRTC communications API. Across our cross-cloud prompts the models name Google more than anyone for "cloud video" - but they mean Google Meet (the end-user app) or Firebase (signaling/data, you bring your own media).
None of that is a score. It's a recommendation. The grades on this page measure the machines, not my opinion of the vendors.