Provenance Record

News article of about 850 words (News range 400-1200). Clear structure (Overview, What Cursor Announced, What Google Announced, How the Reports Compare, Other Coding Agents, What We Don't Know). Facts are attributed to the source that states them, the cross-vendor comparison is labelled as the Herald's reading or as The New Stack's, and the limits are assigned to the right product. Internal link to /article/2026-10/02-openai-gives-codex-reusable-cloud-environments-... exists and the TechCrunch description of it is accurate.

Snapshots read from disk (sources/2026-11/<slug>/source-N.html.gz), hashes re-verified against the manifest: source-0 cursor.com/changelog/voice-chat (sha256 049d505f...) confirms: date 'Nov 6, 2026'; 'You can now talk with your agents in a realtime voice call'; surfaces Agents Window, IDE, web, Cursor for iOS; waveform button 'Start voice chat' when idle and input empty; 'Hey Siri, call Cursor'; quote 'listens, replies, and hands coding work to the agent in your chat' verbatim; 'Voice chat runs on Grok Voice'; Privacy Mode zero data retention; voice chat separate from dictation, 'which earlier releases called Voice Mode'. source-1 cursor.com/docs/agent/voice-chat (0dea971f...) confirms: 'Voice chat runs on Grok Voice. Grok Voice handles listening and speaking. The coding agent in the chat keeps using the model you picked'; read-only lookups; short progress notes; API-key sessions cannot start voice chat; signed-in account required; silence hang-up 'about 10 minutes ... while the agent has no work in progress'; 'There's a daily limit on voice calls' with no number; button hidden in Claude Code chats (also subagents, archived chats, teammates' chats). Neither Cursor page names xAI (The New Stack does). source-2 9to5Google (96290e38...; byline Abner Li, 'Nov 6 2026 - 7:01 am PT') confirms version 2.29 for Mac, Windows, Linux; 'Voice Mode that's powered by Gemini Live'; quote 'talk to Antigravity and hand requests to the agent by voice'; 'various options' for voice and speed 0.75x to 2x; Remote Agents for paid Google AI Pro and Ultra; redesigned conversation page; customizable keyboard shortcuts. It says 'Google is rolling out a big update to Antigravity this week'. source-4 Codex tag (a28c659f...) plus GitHub REST API: tag rust-v0.156.0, release name 0.156.0, created 2026-09-22T18:39:31Z, published_at 2026-09-22T19:51:01Z (UTC, same date on both), not a prerelease; release body (sha256 759229467fe1...) contains verbatim 'Voice conversations are enabled by default, with an F8 toggle, a `/voice settings` picker, and bundled audio runtimes for Linux and Windows.' (and 'Enable TUI voice conversations by default' #44921). source-5 code.claude.com/docs/en/voice-dictation (08054409...; page title 'Voice dictation') confirms 'Your speech is transcribed live into the prompt input'; the page describes dictation only, no two-way voice, so the article does not overstate. The New Stack (HTTP 403 snapshot, file null): read by another route. Route: publisher RSS full text https://thenewstack.io/feed/ (item sha256 77c1254afce14fa40be49f456be2d779f1d128976e815f193cce84919bcfe98f; extracted text sha256 a904619b2cae1fb4557251128ca5371effe511b8c1f05074cbd886e0aff78588; author Paul Sawers, pubDate 2026-11-09 18:22:41 UTC, headline 'Cursor and Google join OpenAI in giving coding agents a voice. Claude Code stays silent.'). Live fetch with a browser User-Agent: HTTP 403 Cloudflare challenge; Wayback availability API: no capture. Confirmed from the RSS text: 'On Friday, Cursor announced Voice Chat with Agents, a Grok Voice-powered feature'; 'On the very same day, Google announced Voice mode in Antigravity, which uses Gemini Live ... desktop app and command-line tool'; both announced 'a two-way voice feature'; /voice live command in the CLI; call stays open while the agent works, interruption mid-sentence, hear an update or approve a command without reaching for the keyboard; the Van der Auwermeulen quote 'Each of those moments pulls you back to the keyboard and away from whatever you were looking at' verbatim; 'Cursor supports voice chat on the web and iOS as well as on desktop, while Google offers it in the Antigravity desktop app and CLI'; 'the Codex CLI has offered live voice conversations since the spring, with OpenAI enabling them by default in September'; Claude Code: 'voice still only goes one way via dictation'; Claude app two-way voice. The article's attribution of the surface comparison to The New Stack, and its note that the Cursor docs do not mention a CLI client, are accurate. Cross-checks beyond the cited sources (for my verification only, not cited in the article): Google's Antigravity blog post 'Voice mode in Antigravity' (Nick Van der Auwermeulen, Nov 6, 2026) contains the quoted sentence and says 'Today, we're introducing voice mode in Antigravity, enabled by Gemini Live', 'a spoken, two-way conversation', nine voices; the article's 'Antigravity blog post' is therefore right. Google's changelog (antigravity.google/docs/changelog) lists v2.29.0 dated November 3, 2026 with Voice mode 'rolling out gradually, so you may not see it yet', v2.29.1 on November 7, and v2.30.0 on November 9 saying Voice mode 'has finished rolling out and is now available to everyone except business and enterprise accounts'. Title claims checked: 'Two-Way Voice Calls' supported (Cursor: 'realtime voice call', 'two-way conversation'; The New Stack: 'two-way voice feature'; 9to5Google does not use 'two-way' and calls it Voice Mode, which the article attributes correctly); 'Running on Grok Voice' (Cursor changelog and docs, verbatim) and 'Gemini Live' (9to5Google, The New Stack) supported; 'Each Add ... on November 6' supported for Cursor (changelog date; no time zone is stated on the page) and, for Antigravity, only as the announcement date (9to5Google 7:01 am PT; The New Stack 'On the very same day'; Google blog 'Nov 6, 2026'), not as an availability date: see correction. Allowlist: cursor.com (line 868, official Cursor blog/site), 9to5google.com, thenewstack.io, github.com and code.claude.com are all on config/source_allowlist.txt, no addition needed; antigravity.google is not cited. The New Stack disclosure: the article page footer could not be fetched (403), but the site-wide footer on thenewstack.io (fetched live, HTTP 200, html sha256 1e636665208389e2666850652b4dc593bb9002d088c6ed51f74fa41967a6ef4c) reads 'TNS owner Insight Partners is an investor in: Ably, Acceldata, ... Tailscale, Teleport, Tenable ...'; the list names none of Cursor/Anysphere, Google, xAI, OpenAI, Anthropic or Replit, so no investor clarification is needed, with the caveat that the per-article footer was not seen. Prompt-injection scanner: one match on source-5, false positive (see findings; matched text 'System prompts, skills, and plugins' in the docs navigation JSON). Anthropic disclosure: not required - Claude Code is a compared product in a section of its own that reports a documentation fact and a The New Stack observation, not a finding, advisory or credit line, and Anthropic is not the subject nor named in the headline or summary (the Overview names it only in a list of compared vendors, an incidental mention). The one-sentence disclosure the writer included at the end of the Overview ('The Herald's contributor model is built by Anthropic, which makes Claude Code, one of the products discussed below.') is accurate, neutral and does not characterise Anthropic's work; its presence is voluntary and acceptable. Independent-source recount (per outlet): The New Stack (Paul Sawers) is independent of both subjects and adds reporting (Cursor/SpaceX and xAI context, CLI surface, Codex and Claude Code comparison, the Cursor dictation history), though its Cursor and Google facts follow the vendors' own posts; 9to5Google (Abner Li) is independent of Google but largely restates Google's changelog/blog (its voice paragraph is two sentences and quotes Google's wording), so it counts as an outlet that restates an announcement. Independent: 2 (one of them restating). First-party: Cursor changelog and Cursor docs (one vendor), Codex release (OpenAI), Claude Code docs (Anthropic). The Codex and Claude Code pages are used only for the comparison, not for the lead claims. News does not carry an independence minimum, so no requirement is missed.

Every quote, version, date, number and limit traces to the snapshots or the RSS text listed above. Quantifier/absence scan (grep for no/none/neither/only/both/every/each/all/never/first/any) run on title, summary and body: (1) 'each added ... on November 6' - correct for Cursor, announcement-only for Antigravity (correction filed); (2) 'both features follow a pattern ...' is labelled the Herald's reading and holds for both vendors' descriptions; (3) 'voice mode works in both the Antigravity desktop app and its command-line tool' matches The New Stack; (4) 'None of the sources cited here reports usage figures, latency, accuracy or pricing for either new feature' holds across all six (the $60 billion acquisition figure in The New Stack is not a feature price and is not used); (5) 'Cursor's documentation gives no number for its daily voice-call limit' holds; (6) '9to5Google ... does not say whether Voice Mode depends on a plan' holds (note: Google's changelog excludes business and enterprise accounts from the completed rollout; not in the cited sources, and the article's hedge is accurate to them); (7) 'None of the cited sources says whether Anthropic plans two-way voice for Claude Code' holds. No relative dates in the body (every date is a calendar date). Codex: 'published 2026-09-22 (UTC) according to the GitHub API' is exact and states the basis; 'enabled by default' matches the release-note wording. Claude Code: the article does not overstate (dictation only). Rule 15: not required, see source_verification. Omission, not an error: The New Stack reports Cursor 'was acquired by Elon Musk's SpaceX in August for $60 billion' and that Grok Voice is xAI's; the article names neither (neither Cursor page names xAI), so the relationship between the voice supplier and Cursor's owner is absent; recorded as a recommendation, no statement in the article is wrong because of it. One issue: the Antigravity availability date (see concerns).

Accurate, well-attributed News article whose sources, quotes, limits, versions and comparisons all check out, with one date-framing issue for Antigravity published with a public corrections record. Featured candidacy: 1 - accurate coverage of a notable same-day feature convergence among AI coding tools for a defined developer audience, but an incremental feature rather than an industry shift