Superhuman vs xAI

Superhuman — Application · Private · 1 of 1 figure sourced  |  xAI — Foundation Models · Acquired · $230B valuation · 3 of 3 figures sourced

Relationship

Assembled from the recorded fields for this pair, not hand-checked. The comparison below is read from each company’s own profile.

Aligned comparison

FieldSuperhumanxAI
Sizenot disclosed$230B valuation
Employees——
Founded20092023 14 yrs later
StatusPrivateAcquired
CategoryApplicationFoundation Models
Stack layerApplication, PlatformAI agent, API service, Application, Model API
HeadquartersSan Francisco, USASan Francisco, USA match

Capability overlap

Shared · 3

Agent orchestrationSummarizationText generation

Not verified for xAI · 2

Email assistanceWorkflow automation

Recorded for Superhuman. xAI’s product records say nothing either way — a missing record is not a missing capability.

Not verified for Superhuman · 9

Agentic codingCode generationImage generationSpeech to textText to speechVideo generationVoice agentVoice conversionSearch answers

Recorded for xAI. Superhuman’s product records say nothing either way — a missing record is not a missing capability.

Products, side by side

Algorithmic pairing — assembled from recorded fields, not hand-checked

Superhuman

Application

GrammarlyApplication

The writing assistant that gave the company its old name: spelling, grammar and tone correction across a million apps and websites, with generative rewrites, plagiarism and AI-text detection on the paid tier.

Superhuman DocsApplication

A collaborative-docs surface where a team's data and AI meet, the renamed successor to the acquired Coda.

Superhuman GoApplication

An AI assistant that works across the applications a person already uses, rather than living in its own chat window.

Superhuman MailApplication

An AI-assisted email client, the product the company was originally named for, now sold as one app inside the Superhuman Platform.

xAI

Application

GrokApplication

Assistant for chat, real-time web and X search, image generation and voice, on the web and in the X apps.

GrokipediaApplication

AI-generated reference encyclopedia, freely browsable without sign-in, listed in x.ai's own top-level Products nav.

No counterpart

Superhuman sells these in a stack layer with no product recorded for xAI yet — nothing on the other side to compare them against.

Platform

Superhuman PlatformPlatform

The umbrella under which Superhuman now sells Mail, Docs and Go as one subscription, plus a marketplace of third-party agents and connectors.

xAI sells these in a stack layer with no product recorded for Superhuman yet — nothing on the other side to compare them against.

API service

Grok Imagine APIAPI service

API for generating and editing images and video via Grok Imagine, distinct from the consumer Imagine surface inside the Grok app.

Grok VoiceAPI service

Voice agent builder and API suite from xAI: real-time speech-to-speech conversational agents, speech-to-text transcription, text-to-speech, voice cloning and (upcoming) live translation, built on Grok.

AI agent

Grok BotAI agent

Persistent AI teammate agents that retain context and learn from prior work across sessions, for delegated business tasks (e.g. account management).

Grok BuildAI agent

Terminal-based coding agent powered by Grok 4.6 with plan mode, subagents, skills, plugins and MCP-server support for software development workflows.

Model API

xAI APIModel API

Hosted API for the Grok models, billed per token.