Superhuman Go
The best distribution in the assistant market — Grammarly's 40M daily users and a million-plus app surface — wrapped around an agent platform that is still labelled beta ten months after launch, will not say which models it runs, and gives you no way to test whether its agents got the job right.
PRICING
| Free | $0 | Unlimited AI chat in every app and tab while in beta, unlimited access to all new connector and partner agents while in beta, writing without mistakes in 20+ languages, collaborative docs |
| Pro | $12/mo | billed annually ($15/mo monthly); adds unlimited rewrites and translations, AI detection, plagiarism check, brand tone, custom domains for docs |
| Business | $33/mo | billed annually ($40/mo monthly); adds Superhuman Mail, CRM views (HubSpot, Salesforce, Pipedrive), unlimited doc automations, Jira/GitHub/Figma sync |
| Enterprise | Custom | adds analytics and reporting, SAML SSO, custom roles and permissions, DLP, BYOK encryption, dedicated support. Go features listed as early access at this tier. |
Prices are for the whole Superhuman suite; Go is not sold separately. The launch promise of free Go features ran to 01/02/2026, and as of this audit Go remains beta with unlimited access on Free, Pro and Business. EUR figures converted at the ECB euro reference rate of 06/08/2026 (EUR/USD 1.1542) and rounded; Superhuman bills in USD.
checked 2026-08-07 · vendor pricing page
Element scores
Strengths
Go solves the context problem that every other assistant makes the user solve by hand. It reads the active tab or window, connects 100+ apps permission-aware through Coda Brain, and keeps a memory across apps, so drafting a reply with account details and support-ticket context does not involve pasting anything. Distribution is the moat: Grammarly's 16 years of extension plumbing already reaches 40M daily users, 50,000 organizations and roughly a million websites and apps, so Go arrives where people already work instead of asking them to switch browsers. The agent security model is better than most: agents can only reach domains they declare and Superhuman enforces it, developers never touch user credentials, third-party agents are reviewed before listing, admins choose which agents are available, and AI training is off by default for Business and Education. Grammarly Authorship is a rare piece of honest provenance tooling, attributing text to the specific agent that produced it, with 5M+ reports generated and one college reporting a 96% drop in integrity violations. Go is free on the entry tier while in beta.
Honest dings
Go has been beta on every pricing tier since October 2025 and is still beta on 07/08/2026, and the Enterprise tier — the one paying most — is listed as early access only, which is backwards. There is no way to evaluate agent output quality: no eval suite, no regression testing, no accuracy claim, on a product that sends emails and files tickets on your behalf. The model layer is undisclosed, so buyers cannot assess or compare what is drafting in their name. Marketing and documentation contradict each other on multi-agent work — the launch copy promises orchestration of a team of agents, the help centre says work with one agent at a time. The Agents SDK has been in closed beta for ten months, so the open-platform story is a promise, not a product. Go's own extensibility is Coda Packs, a proprietary SDK, while the rest of the suite ships MCP servers. Integration counts do not reconcile: 100+ apps on the marketing page, 800+ in the SDK docs. And an assistant that reads every tab is a wide data surface; the safeguards are documented and sensible, but the surface is real.
Sources
Every audit lists the research it rests on — transparency and traceability are the product. Tools evolve: each audit is a snapshot of its audit date, and re-audits supersede older versions (kept below for reference).
- superhuman.com/plans — Official pricing page, live-checked: Free $0, Pro $12/$15, Business $33/$40, Enterprise custom; Go (Beta) feature matrix showing unlimited-while-in-beta on Free/Pro/Business and early access on Enterprise (accessed 2026-08-07)
- superhuman.com/go — Official product page: proactive assistance, works in every tab, 100+ app integrations, Agent Store, Agents SDK in closed beta, 1 million+ apps and websites, GDPR/CCPA/FERPA claims (accessed 2026-08-07)
- grammarly.com/blog/company/announcing-company-rebra… — Official announcement, 29/10/2025: rebrand to Superhuman, Go launch, 40M+ daily users, 1M+ integrations, agent categories, Agents SDK closed beta, free Go features through 01/02/2026 (accessed 2026-08-07)
- support.grammarly.com/hc/en-us/articles/40707910210… — Official help centre: Agent Store and Connectors, custom agent builder (chat and visual, no code), team sharing, surface availability (Chrome/Edge extension, Windows, Mac, mobile) (accessed 2026-08-07)
- help.superhuman.com/hc/en-us/articles/4624210958606… — Official security overview: declared-domain enforcement, TLS, credential isolation from developers, third-party agent vetting, per-agent security tab (accessed 2026-08-07)
- coda.io/packs/build/latest/agents — Official Superhuman Packs SDK docs: agents are Coda Packs, SDK in beta, 800+ integrations, 500k websites, 40M daily active users, 50,000 teams, one-third of the Fortune 500 (accessed 2026-08-07)
- grammarly.com/ai-agents — Official agent directory: eight Grammarly writing agents, agents do not retain information between sessions except an opt-in voice profile, one agent at a time (accessed 2026-08-07)
- grammarly.com/blog/company/superhuman-authorship-do… — Official announcement, 10/03/2026: agent-specific attribution in Authorship, default-on in docs, 5M+ reports, 96% reduction in integrity violations at Rowan-Cabarrus, admin control over available agents (accessed 2026-08-07)
- blog.superhuman.com/superhuman-partner-agents — Official: partner agents from Box, Gamma and Wayground added to the Agent Store, expanding the third-party ecosystem (accessed 2026-08-07)
- reworked.co/collaboration-productivity/grammarly-re… — Independent reporting with VP Enterprise Product Luke Behnke: Go runs on Coda Brain, ~100 permission-aware agents at launch, memory across apps, will not run in password managers or sensitive fields, SOC 3 / SOC 2 Type 2 / ISO 27001-27017-27018, no third-party model training on user content (accessed 2026-08-07)
- chromewebstore.google.com/detail/superhuman-go-ai-a… — Independent (Chrome Web Store listing): ~3,000 users on the standalone Go extension, disclosed data handling — PII, personal communications, location, user activity, website content (accessed 2026-08-07)
- pcmag.com/news/grammarly-chases-the-ai-hype-rebrand… — Independent reporting: sceptical framing of the rebrand, Go described as a team of agents across every application and browser tab (accessed 2026-08-07)
- techradar.com/ai-platforms-assistants/grammarly-has… — Independent reporting: names the adoption risk of overwhelming narrowly-focused Grammarly users and of an assistant that hovers with unwanted help (accessed 2026-08-07)
- connect.superhuman.com/t/add-model-context-protocol… — Official community forum: Coda/Superhuman/Grammarly MCP in beta; Superhuman Docs MCP entered public beta June 2026; users note Packs do not substitute for MCP (accessed 2026-08-07)
- mcpservers.org/remote-mcp-servers/superhuman-mail — Independent: Superhuman Mail hosted remote MCP server, Streamable HTTP transport, OAuth — evidence that the suite ships MCP elsewhere but not for Go (accessed 2026-08-07)
- ecb.europa.eu/stats/policy_and_exchange_rates/euro_… — ECB euro reference exchange rate 06/08/2026: EUR/USD 1.1542, used for the EUR conversions above (accessed 2026-08-07)