Best realtime tools for web apps (worth paying for?)

We asked 10 models: Which realtime messaging services are actually worth paying for? Each named its own top 10.

Asked 4 ways: List request · Buyer asking for advice · Search query · Worth paying for?. Share of voice pools every wording.

Agreement between models: 45%
Same model, run twice: 74%
Different picks: 30

When agreement between models is well below a model's agreement with itself, the split reflects real differences in taste rather than randomness.

The consensus

Each cell is the position that model gave the pick; blank means it left the pick off. Click a row for each model's reasoning.

#	Pick	Listed by	Claude Haiku 5.5	GPT-6 Luna	Gemini 4 Argon	Qwen 3.8 Flash	DeepSeek V4 Pro	GLM-5.3	Kimi K3	MiniMax M3	Mistral Large 4	Nemotron 3 Ultra
1	Slack	8/10	3	1			1	1	1	1	1	1
GPT-6 Luna (#1) Polished, searchable team chat with integrations that make its paid tiers worthwhile for many organizations. DeepSeek V4 Pro (#1) Best-in-class search, integrations, and channels make it indispensable for async teamwork. GLM-5.3 (#1) Deep integration ecosystem and channels make it the team collaboration default worth paying for. Kimi K3 (#1) Best integrations and search; pricey but unmatched ecosystem for team chat. MiniMax M3 (#1) Best all-around team chat with powerful integrations and search Mistral Large 4 (#1) Best search, integrations, and channel organization for most teams. Nemotron 3 Ultra (#1) Best-in-class UX, integrations, search; teams pay gladly.
2	Microsoft Teams	8/10	5	2			3	2	2	2	2	2
GPT-6 Luna (#2) Strong value when bundled with Microsoft 365, with meetings, channels, and enterprise administration. GLM-5.3 (#2) Bundled with Microsoft 365, robust enterprise features and video in one paid app. Kimi K3 (#2) Bundled value with Office 365; unbeatable if already paying for Microsoft. MiniMax M3 (#2) Best value bundled with Microsoft 365 for enterprises Mistral Large 4 (#2) Free with Microsoft 365; unbeatable value for Office-centric orgs. Nemotron 3 Ultra (#2) Included in M365; unbeatable for orgs on Microsoft stack. DeepSeek V4 Pro (#3) Essential if you live in Office 365; meeting recordings and SharePoint integration shine.
3	Discord	7/10		3			2	3	3	3	3	3
DeepSeek V4 Pro (#2) Low-friction voice + text for communities and gaming; Nitro perks are genuinely useful. GPT-6 Luna (#3) Excellent real-time communities and voice; paid boosts and Nitro suit groups that use it heavily. GLM-5.3 (#3) Nitro adds quality upgrades to the best community and voice chat platform. Kimi K3 (#3) Excellent voice/video and community features at very low cost. MiniMax M3 (#3) Excellent for communities and voice, generous free tier Mistral Large 4 (#3) Best for communities; Nitro worth it for power servers and creators. Nemotron 3 Ultra (#3) Superior voice/video, community features; free tier is generous.
4	Ably	6/10	2		1	1		8	9	9
Gemini 4 Argon (#1) Unmatched reliability, guaranteed message ordering, and seamless global scaling make it worth every penny. Qwen 3.8 Flash (#1) Purpose-built realtime pub/sub with strong delivery guarantees. Claude Haiku 5.5 (#2) Strong global edge network, reliable delivery guarantees, and good developer tooling. MiniMax M3 (#9) Strong enterprise-grade pub/sub with global guarantees
5	Pusher	5/10	1		2	2				5		9
Claude Haiku 5.5 (#1) Simple hosted WebSocket channels with generous free tier and predictable pricing. Gemini 4 Argon (#2) Rock-solid WebSocket infrastructure with the easiest developer onboarding for adding real-time features fast. Qwen 3.8 Flash (#2) Simple presence/channels API, excellent docs and reliability. MiniMax M3 (#5) Reliable real-time APIs for developers building chat features Nemotron 3 Ultra (#9) Developer-focused, realtime APIs; easy integration, scalable.
6	Twilio	7/10	8		9	5			8	4	4	6
MiniMax M3 (#4) Best programmable messaging embedded into apps Mistral Large 4 (#4) Pay per use; only worth it when you're building custom messaging. Qwen 3.8 Flash (#5) Category-defining SMS/voice pricing; massive developer trust. Nemotron 3 Ultra (#6) Programmable, multi-channel API; pay-as-you-go for builders. Claude Haiku 5.5 (#8) Flexible messaging APIs across SMS, WhatsApp, and in-app channels at scale. Gemini 4 Argon (#9) Unbeatable for bridging in-app chat with SMS and WhatsApp inside a single thread.
7	Zoom	5/10		7			6	5	4	8
Kimi K3 (#4) Included with Zoom; solid choice if video meetings are your priority. GLM-5.3 (#5) Tight coupling with Zoom's video meetings and reliability justifies paid plans. DeepSeek V4 Pro (#6) Tightly coupled with best-in-class video; persistent chat reduces email clutter. GPT-6 Luna (#7) A practical choice for organizations already paying for Zoom and relying on its meetings.
8	Mattermost	6/10		8			7	9	5		10	4
Nemotron 3 Ultra (#4) Self-hosted, open-source, DevOps-friendly; total data control. Kimi K3 (#5) Open-source alternative with DevOps-friendly features and self-hosting. GPT-6 Luna (#8) Paid hosting and controls appeal to teams needing self-hosting or stricter data governance. GLM-5.3 (#9) Open-source, DevOps-friendly alternative with strong on-prem deployment. Mistral Large 4 (#10) Worth it for self-hosted, compliance-heavy, or government teams.
9	Stream Chat	4/10	6		3	3						10
Gemini 4 Argon (#3) Pre-built UI components and ultra-fast edge infrastructure save months of custom chat development. Qwen 3.8 Flash (#3) High-quality activity feeds plus chat/voice/video SDKs. Claude Haiku 5.5 (#6) Excellent chat SDKs and polished docs for building in-app messaging quickly.
10	PubNub	4/10	4		4	4			10
Claude Haiku 5.5 (#4) Mature platform with broad SDK coverage and robust presence and history features. Gemini 4 Argon (#4) Battle-tested low-latency network capable of handling massive IoT and live event concurrency effortlessly. Qwen 3.8 Flash (#4) Global edge network for low-latency messaging at scale.
11	Sendbird	5/10	7		5	7				6		8
Gemini 4 Argon (#5) Feature-complete chat API with enterprise-grade moderation and compliance tools out of the box. MiniMax M3 (#6) Polished chat SDKs with strong moderation features Claude Haiku 5.5 (#7) Proven enterprise chat infrastructure with moderation and compliance features. Qwen 3.8 Flash (#7) Full in-app chat SDKs with proven enterprise deployments.
12	Telegram	3/10		4			4				6
GPT-6 Luna (#4) Fast, capable group messaging; premium features make sense for power users and large communities. DeepSeek V4 Pro (#4) Superior file sharing limits, bots, channels; Premium doubles down on upload size. Mistral Large 4 (#6) Free, fast, and feature-rich; Premium only for large uploads.
13	Google Chat	4/10	10	6				4	7
GLM-5.3 (#4) Good value inside Workspace; solid threads and Drive integration. GPT-6 Luna (#6) Worth considering with Google Workspace: simple, integrated messaging without another vendor. Kimi K3 (#7) Tight Workspace integration; worth it only if deeply invested in Google.
14	WhatsApp	3/10		5			5				7
GPT-6 Luna (#5) A dependable choice for customer and group messaging, especially where its broad reach matters. DeepSeek V4 Pro (#5) End-to-end encryption by default, ubiquitous globally, Business API is powerful. Mistral Large 4 (#7) Essential paid tool for customer messaging at global scale.
15	Rocket.Chat	5/10		9			10	10	6			5
Nemotron 3 Ultra (#5) Flexible self-hosted option; strong omnichannel, customization. Kimi K3 (#6) Self-hosted flexibility and data control; best for security-conscious teams. GPT-6 Luna (#9) Flexible self-hosted messaging with paid support for organizations needing deployment control. GLM-5.3 (#10) Self-hosted control and compliance for security-conscious teams.

15 lower-scoring picks are not shown; every ballot below lists them in full.

Most divisive

Picks most models listed, at very different positions

Ably#1 for Gemini 4 Argon #9 for MiniMax M3
Pusher#1 for Claude Haiku 5.5 #9 for Nemotron 3 Ultra
Stream Chat#3 for Gemini 4 Argon #10 for Nemotron 3 Ultra

Hot takes

Picks that appear on only one ballot

Supabase at #6, only Gemini 4 Argon
Socket.IO at #6, only Qwen 3.8 Flash
Google Cloud Pub/Sub at #7, only GLM-5.3
Flock at #7, only Nemotron 3 Ultra
Salesforce at #8, only Qwen 3.8 Flash
Front at #8, only Mistral Large 4
Sobio at #9, only Qwen 3.8 Flash
Twist at #9, only DeepSeek V4 Pro
AWS AppSync at #10, only Gemini 4 Argon
Centrifugo at #10, only Qwen 3.8 Flash

Every ballot

Hover a pick to find it on the other ballots. Marked picks appear on no other ballot.

Claude Haiku 5.5

Pusher
Ably
Slack
PubNub
Microsoft Teams
Stream Chat
Sendbird
Twilio
Firebase
Google Chat

42% with consensus · 59% self-consistent

GPT-6 Luna

Slack
Microsoft Teams
Discord
Telegram
WhatsApp
Google Chat
Zoom
Mattermost
Rocket.Chat
Signal

77% with consensus · 91% self-consistent

Gemini 4 Argon

Ably
Pusher
Stream Chat
PubNub
Sendbird
Supabase
Confluent Cloud
Firebase
Twilio
AWS AppSync

20% with consensus · 93% self-consistent

Qwen 3.8 Flash

Ably
Pusher
Stream Chat
PubNub
Twilio
Socket.IO
Sendbird
Salesforce
Sobio
Centrifugo

24% with consensus · 58% self-consistent

DeepSeek V4 Pro

Slack
Discord
Microsoft Teams
Telegram
WhatsApp
Zoom
Mattermost
Signal
Twist
Rocket.Chat

70% with consensus · 83% self-consistent

GLM-5.3

Slack
Microsoft Teams
Discord
Google Chat
Zoom
Confluent Cloud
Google Cloud Pub/Sub
Ably
Mattermost
Rocket.Chat

78% with consensus · 32% self-consistent

Kimi K3

Slack
Microsoft Teams
Discord
Zoom
Mattermost
Rocket.Chat
Google Chat
Twilio
Ably
PubNub

81% with consensus · 78% self-consistent

MiniMax M3

Slack
Microsoft Teams
Discord
Twilio
Pusher
Sendbird
Zendesk
Zoom
Ably
Intercom

86% with consensus · 78% self-consistent

Mistral Large 4

Slack
Microsoft Teams
Discord
Twilio
Intercom
Telegram
WhatsApp
Front
Zendesk
Mattermost

76% with consensus · 87% self-consistent

Nemotron 3 Ultra

Slack
Microsoft Teams
Discord
Mattermost
Rocket.Chat
Twilio
Flock
Sendbird
Pusher
Stream Chat

80% with consensus · 87% self-consistent

Who agrees with whom

Overlap between two models' lists, weighted toward the top · 100 means identical · Color runs from 0 (lightest) to 87 (darkest)

	Claude Haiku 5.5	GPT-6 Luna	Gemini 4 Argon	Qwen 3.8 Flash	DeepSeek V4 Pro	GLM-5.3	Kimi K3	MiniMax M3	Mistral Large 4	Nemotron 3 Ultra
Claude Haiku 5.5		21	62	62	21	24	26	35	23	27
GPT-6 Luna	21		0	0	87	81	81	73	80	74
Gemini 4 Argon	62	0		85	0	6	3	14	1	6
Qwen 3.8 Flash	62	0	85		0	2	4	19	7	9
DeepSeek V4 Pro	21	87	0	0		71	73	66	73	68
GLM-5.3	24	81	6	2	71		84	74	71	73
Kimi K3	26	81	3	4	73	84		77	74	85
MiniMax M3	35	73	14	19	66	74	77		83	79
Mistral Large 4	23	80	1	7	73	71	74	83		76
Nemotron 3 Ultra	27	74	6	9	68	73	85	79	76