{ "data": { "a": { "slug": "github-copilot-cli", "name": "GitHub Copilot CLI", "vendor": "GitHub", "vendorUrl": "https://github.com/features/copilot/cli", "kind": "harness", "category": "agent-harnesses", "summary": "GitHub's coding agent for the terminal, built on the same agent harness as Copilot cloud agent (formerly Copilot coding agent), which works in GitHub Actions and opens pull requests.", "url": "https://www.anchorterminal.com/tools/github-copilot-cli", "markdownUrl": "https://www.anchorterminal.com/tools/github-copilot-cli.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/github-copilot-cli.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/github-copilot-cli.json", "dns": "github-copilot-cli.grade.anchorterminal.com", "repo": "https://github.com/github/copilot-cli", "license": "Proprietary, under the licence in the repository's `LICENSE.md`. Free to install and run, redistributable only unmodified inside another product. The repository holds the README, changelog and install script, not the source", "transports": [], "packages": [ { "registry": "npm", "name": "@github/copilot" } ], "auth": "mixed", "authNotes": "`/login` with a GitHub account, or a fine-grained personal access token with the Copilot Requests permission in `GH_TOKEN` or `GITHUB_TOKEN`. Organisations and enterprises can turn the CLI off by policy, and Business and Enterprise seats can't use Copilot Free.", "pricing": "freemium", "pricingNotes": "Copilot Free ($0) includes the CLI with an allowance of AI credits and auto model selection only. Pro is $10 a month (1,000 base and 500 flex credits), Pro+ $39 (3,900 and 3,100), Max $100 (10,000 and 10,000). Business is $19 and Enterprise $39 per seat a month, with usage past the shared pool at $0.01 per AI credit. Cloud agent also uses GitHub Actions minutes (checked 2026-11-04).", "priceSummary": "$0.01 / credit", "where": "local", "x402": { "level": "no", "evidence": "No x402, MPP or L402 in the docs, the plans page or the changelog (checked 2026-10-02).", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": 11000, "npmWeekly": null, "pypiWeekly": null, "asOf": "2026-10-02" }, "docsUrl": "https://docs.github.com/en/copilot/concepts/agents/about-copilot-cli", "llmsTxt": "https://docs.github.com/llms.txt", "capabilities": [ "agent.harness", "agent.mcp-client", "agent.multi-agent" ], "tags": [ "official", "harness", "coding-agent", "cli", "closed-source", "mcp", "llms-txt", "free-tier", "no-card", "hosted", "status-page" ], "lastRelease": "2026-10-27", "graded": true, "anchor": { "graded": true, "score": 56, "grade": "C", "agentReady": false, "rank": 844, "ranked": true, "rankOf": 1486, "categoryRank": 32, "methodology": "0.7", "run": "2026-10-01", "scores": { "ergonomics": 72, "maintenance": 77, "payments": 40, "reliability": 55, "schema": 72, "security": 65, "transparency": 74 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-11-04" }, "negative": -8, "negativeNotes": [ "2026-08-10 to 2026-10-22. Breaking changes in 1.0.x patch releases with no advance notice found. 1.0.79 (10 August) marks as BREAKING that `allowDevToolCaches` is renamed and the old key silently ignored, so an existing false opt-out reverts to on, and moves `sandbox.gitAuth` and `sandbox.ghAuth` with SDK requests sending the old keys rejected. 1.0.103 (22 October) retires the `--remote` and `--no-remote` startup flags, which the command reference now lists as removed or unsupported for interactive startup. One term, as cline's patch-release break was read (https://github.com/github/copilot-cli/blob/main/changelog.md). -3", "2026-09-22 to 2026-10-22. Released fixes of the CLI's own described flaws with no advisory, one term. 1.0.88 says enterprise managed settings now apply to ACP mode, AHP hosts and the `--server` session, which previously ran with no managed MCP, permission or plugin policy. 1.0.100 (19 October) says ambiguous skill `allowed-tools` lists now prompt instead of being granted. 1.0.103 (22 October) says ACP sessions now honour saved sandbox settings and the `--sandbox` flags (https://github.com/github/copilot-cli/blob/main/changelog.md). -3", "2026-05-11. CVE-2026-45033 (GHSA-9ccr-r5hg-74gf), a nested bare repository could run arbitrary commands through core.fsmonitor, rated High on OSV. Fixed in 1.0.43 and published, more than two months ago (https://github.com/advisories/GHSA-9ccr-r5hg-74gf). -1", "2026-03-06. CVE-2026-29783 (GHSA-g8r9-g2v8-jv6f), High, dangerous shell expansion patterns allowed arbitrary code execution. Fixed in 0.0.423 and published, more than two months ago (https://github.com/advisories/GHSA-g8r9-g2v8-jv6f). -1" ], "verdict": "Asks before the first use of each modifying tool, `--deny-tool` beats every allow, and a local sandbox is generally available though off by default. Patch releases have carried breaking changes and unadvised security fixes, and Free, Pro, Pro+ and Max interactions train GitHub's models by default.", "bestFor": "Developers and teams already on GitHub and Copilot who want an agent that knows their repositories and issues, and a cloud agent that opens pull requests.", "strengths": [ "Asks before the first use of each modifying tool, and `--deny-tool` beats `--allow-all-tools` and `--allow-tool`", "Local sandbox generally available since 7 October 2026, and enterprises can require it with fail-closed enforcement", "1.0 since March 2026, with 25 releases between 10 August and 27 October in a dated changelog", "Copilot Free includes the CLI with no card, and plan prices are published", "Client telemetry can be turned off with `--disable-client-telemetry` since 19 October 2026" ], "weaknesses": [ "Free, Pro, Pro+ and Max interactions train GitHub's models by default since 24 April 2026", "The local sandbox is off by default and allows local network access by default", "Patch releases removed startup flags and renamed sandbox keys with no advance notice", "Security fixes such as ACP sessions ignoring sandbox settings shipped in the changelog with no advisory", "The CLI can't enforce organisation MCP policies, and the source and CI aren't public" ], "agentNotes": [ "Pass `--deny-tool` for anything destructive. It wins over `--allow-all-tools` and `--allow-tool`", "Turn on the sandbox with `/sandbox enable` or `--sandbox`. It's off by default", "Pin the CLI version in scripts. Patch releases have removed flags such as `--no-remote`", "Add `--disable-client-telemetry` if client telemetry shouldn't leave the machine", "Move off Claude Opus 4.8, Claude Opus 5 and GPT-5.6 Terra before 16 November 2026" ], "metrics": { "kind": "local", "measured": false }, "reviewCount": 2, "avgRating": 2.5, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "C", "methodology": "0.7", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 56 } ], "editorialScores": { "ergonomics": 72, "maintenance": 77, "payments": 40, "reliability": 55, "schema": 72, "security": 65, "transparency": 60 }, "provenanceScore": 87, "checked": { "categories": { "ergonomics": "2026-11-04", "maintenance": "2026-11-04", "payments": "2026-11-04", "reliability": "2026-11-04", "schema": "2026-11-04", "security": "2026-11-04", "transparency": "2026-11-04" }, "last": "2026-11-04", "lastMoved": "2026-11-04", "oldest": "2026-11-04", "stale": false, "staleAfterDays": 90 } }, "connect": { "install": "npm i -g @github/copilot # or: brew install copilot-cli", "headless": { "run": "copilot -p \"fix the failing test\" --allow-tool 'write' --deny-tool 'shell(git push)'" } }, "letme": { "capability": "https://letme.dev/agent.harness", "tool": "https://letme.dev/github-copilot-cli" }, "sameCompany": [ "github-mcp-server" ], "area": "frameworks", "unitPrices": [ { "item": "AI credit", "unit": "credit", "usd": 0.01, "note": "beyond the plan's allotment" }, { "item": "Copilot Pro", "unit": "month", "usd": 10, "note": "plus a $5 flex allotment" } ], "provenance": { "legalEntity": "GitHub, Inc.", "domain": "github.com", "domainRegistered": "2007-10-09", "domainNote": "github.com publishes a security.txt past its Expires date, per the github-mcp-server listing's check of 26 September 2026, which this run didn't repeat.", "endpointOnVendorDomain": null, "terms": "https://docs.github.com/en/site-policy/github-terms/github-terms-of-service", "privacy": "https://docs.github.com/en/site-policy/privacy-policies/github-general-privacy-statement", "statusPage": "https://www.githubstatus.com", "changelog": "https://github.com/github/copilot-cli/blob/main/changelog.md", "securityTxt": "expired", "checked": "2026-10-01", "score": 87 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/github-copilot-cli.json", "live": { "slug": "github-copilot-cli", "vendorStatus": { "page": "https://www.githubstatus.com", "indicator": "none", "summary": "All Systems Operational", "checkedAt": "2026-11-07T18:09:24.628295707Z" }, "versions": [ { "registry": "github", "name": "github/copilot-cli", "version": "v1.0.107", "released": "2026-11-06", "seenAt": "2026-11-06T23:28:18.91761101Z" }, { "registry": "npm", "name": "@github/copilot", "version": "1.0.107", "seenAt": "2026-11-06T23:28:18.104257576Z" } ], "githubStars": 11369, "npmWeekly": 1899483, "securityTxt": { "url": "https://github.com/.well-known/security.txt", "state": "valid", "expires": "2026-12-07T16:01:24z", "checkedAt": "2026-11-07T16:01:24.824706262Z" }, "llmsTxt": { "url": "https://docs.github.com/llms.txt", "ok": true, "status": 200, "checkedAt": "2026-11-07T15:32:35.751779369Z" }, "domain": { "domain": "github.com", "registered": "2007-10-09", "source": "https://rdap.verisign.com/com/v1/domain/github.com", "checkedAt": "2026-11-01T14:13:07.897131931Z" }, "pages": [ { "url": "https://docs.github.com/en/copilot/reference/ai-models/supported-models", "kind": "deprecations", "status": 200, "checkedAt": "2026-11-07T14:06:24.450094991Z", "changedAt": "2026-10-31T06:09:58.318628898Z", "fingerprint": "d0d210cda431" }, { "url": "https://github.blog/changelog/2026-10-15-upcoming-deprecation-of-selected-github-copilot-models-in-mid-november/", "kind": "deprecations", "status": 200, "checkedAt": "2026-11-07T14:10:27.286473207Z", "changedAt": "2026-11-07T14:10:27.286473207Z", "fingerprint": "d44d095fd217" }, { "url": "https://raw.githubusercontent.com/github/copilot-cli/main/changelog.md", "kind": "deprecations", "status": 200, "checkedAt": "2026-11-07T14:21:05.930628048Z", "changedAt": "2026-11-07T14:21:05.930628048Z", "fingerprint": "5a75082a8735" }, { "url": "https://docs.github.com/en/site-policy/privacy-policies/github-general-privacy-statement", "kind": "privacy", "status": 200, "checkedAt": "2026-11-07T14:06:29.006023757Z", "changedAt": "2026-10-08T18:18:49.019338599Z", "fingerprint": "552ebe870f5c" }, { "url": "https://docs.github.com/en/site-policy/github-terms/github-terms-of-service", "kind": "terms", "status": 200, "checkedAt": "2026-11-07T14:06:28.02078792Z", "changedAt": "2026-10-08T18:18:46.347641375Z", "fingerprint": "f4bfd10fa079" } ], "github": { "repo": "github/copilot-cli", "checkedAt": "2026-11-02T08:50:40.646669921Z", "stars": 11323, "archived": false, "issuesEnabled": true, "pushedAt": "2026-11-01T02:06:57Z", "openIssues": 2136, "openPRs": 46, "issuesOpened90d": 906, "issuesClosed90d": 784, "prsMerged90d": 9, "ci": { "branch": "main", "runs": 7, "success": 0, "failure": 7, "other": 0, "latest": "failure", "latestAt": "2026-02-19T14:38:01Z" }, "advisories": [ { "ghsa": "GHSA-9ccr-r5hg-74gf", "cve": "CVE-2026-45033", "severity": "medium", "published": "2026-05-06T22:03:35Z" }, { "ghsa": "GHSA-g8r9-g2v8-jv6f", "cve": "CVE-2026-29783", "severity": "high", "published": "2026-03-06T16:10:31Z" } ], "replies": { "sampled": 20, "unanswered": 18, "medianDays": 0.9 } }, "updatedAt": "2026-11-07T18:09:24.628295707Z" } }, "answer": "GitHub Copilot CLI scores 56 (C) on agent readiness against T3 Code's 51.9 (D), and leads in 6 of 7 scored categories. T3 Code leads on payments \u0026 pricing.", "b": { "slug": "t3-code", "name": "T3 Code", "vendor": "T3 Tools Inc.", "vendorUrl": "https://t3.codes", "kind": "harness", "category": "agent-harnesses", "summary": "T3 Code is an open-source control surface for the coding agents on your machine, Claude Code, Codex, Cursor, Grok Build, OpenCode, Antigravity and fx, from desktop, web and iOS and Android apps.", "url": "https://www.anchorterminal.com/tools/t3-code", "markdownUrl": "https://www.anchorterminal.com/tools/t3-code.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/t3-code.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/t3-code.json", "dns": "t3-code.grade.anchorterminal.com", "repo": "https://github.com/pingdotgg/t3code", "license": "MIT", "transports": [], "packages": [], "auth": "none", "pricing": "free", "pricingNotes": "Free and open source. You pay for the coding agents it runs, through your own subscriptions or API keys (checked 2026-11-07).", "priceSummary": "Free · OSS", "where": "local", "x402": { "level": "no", "evidence": "No payment protocol in the repository or README (checked 2026-11-07).", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": null, "npmWeekly": null, "pypiWeekly": null, "asOf": "2026-11-07" }, "docsUrl": "https://github.com/pingdotgg/t3code/tree/main/docs", "capabilities": [ "agent.harness", "agent.multi-agent" ], "tags": [ "open-source", "mit", "desktop-app", "mobile", "telemetry", "new" ], "lastRelease": "2026-11-06", "graded": true, "anchor": { "graded": true, "score": 51.9, "grade": "D", "agentReady": false, "rank": 1002, "ranked": true, "rankOf": 1486, "categoryRank": 40, "methodology": "0.7", "run": "2026-10-01", "scores": { "ergonomics": 60, "maintenance": 75, "payments": 60, "reliability": 43, "schema": 55, "security": 35, "transparency": 51 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "low", "date": "2026-11-07" }, "negative": 0, "verdict": "A fast-moving open-source way to run and steer several coding agents from desktop, browser or phone, using the subscriptions you already have. It's pre-1.0, and it sends usage data by default, including hashed identifiers for your OpenAI and Claude accounts, with the opt-out documented outside the README.", "bestFor": "Developers who want one app, including on their phone, to drive several coding agents they already pay for.", "strengths": [ "Controls Claude Code, Codex, Cursor, Grok Build, OpenCode, Antigravity and fx with your existing subscriptions", "iOS and Android apps to steer agents running on your machine", "Managed policies for teams, including turning telemetry off", "MIT, with active CI and daily nightlies" ], "weaknesses": [ "Usage data on by default, with hashed OpenAI and Claude account identifiers, and relay traces to Axiom", "The telemetry opt-out is in the docs, not the README", "Pre-1.0, at 0.1.7 stable", "Installs with curl piped to sh" ], "agentNotes": [ "Set T3CODE_TELEMETRY_ENABLED=false before starting the server if you don't want usage events sent", "Install and log in to at least one provider CLI first, such as codex login or claude auth login", "Use a managed policy to fix settings across a team" ], "metrics": { "kind": "local", "measured": false }, "reviewCount": 0, "avgRating": 0, "history": [ { "basis": "public evidence", "confidence": "low", "grade": "D", "methodology": "0.7", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 51.9 } ], "editorialScores": { "ergonomics": 60, "maintenance": 75, "payments": 60, "reliability": 43, "schema": 55, "security": 35, "transparency": 62 }, "provenanceScore": 40, "checked": { "categories": { "ergonomics": "2026-11-07", "maintenance": "2026-11-07", "payments": "2026-11-07", "reliability": "2026-11-07", "schema": "2026-11-07", "security": "2026-11-07", "transparency": "2026-11-07" }, "last": "2026-11-07", "oldest": "2026-11-07", "stale": false, "staleAfterDays": 90 } }, "connect": { "install": "curl -fsSL https://t3.codes/install.sh | sh" }, "letme": { "capability": "https://letme.dev/agent.harness", "tool": "https://letme.dev/t3-code" }, "area": "frameworks", "provenance": { "legalEntity": "T3 Tools Inc.", "domain": "t3.codes", "domainRegistered": "", "domainNote": "Not looked up: RDAP isn't requested under the 1 November 2026 rules.", "endpointOnVendorDomain": null, "terms": "", "privacy": "", "statusPage": "", "changelog": "", "securityTxt": "none", "checked": "2026-11-07", "notes": [ "The licence names T3 Tools Inc.. The repository is github.com/pingdotgg/t3code." ], "score": 40 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/t3-code.json", "live": { "slug": "t3-code", "securityTxt": { "url": "https://t3.codes/.well-known/security.txt", "state": "valid", "expires": "2027-11-07T09:42:17.281Z", "checkedAt": "2026-11-07T16:01:55.404622007Z" }, "updatedAt": "2026-11-07T16:01:55.404622007Z" } }, "edges": [ { "by": 30, "category": "security", "leads": "github-copilot-cli", "name": "Security \u0026 auth", "reasons": { "a": "Framework reading (telemetry defaults, approvals, guardrails, sandboxing), five lines. Since 1.0.100 (19 October 2026) `--disable-client-telemetry` turns off the telemetry the CLI sends, which the command reference says doesn't affect server-side telemetry. Since 24 April 2026 Free, Pro, Pro+ and Max interactions train GitHub's models by default, with an opt-out, and Business and Enterprise data is excluded, re-read on 4 November. A fine-grained token with only the Copilot Requests permission works for CI (16). Asks before the first use of each modifying tool, deny rules that beat `--allow-all-tools`, URL and path permissions, trusted directories and enterprise managed settings. Local sandboxing is generally available since 1.0.93 (7 October 2026) and off by default, enterprises can require it fail-closed, and since 1.0.100 the sandbox allows local network access by default. Assisted Permissions, where a model approves requests it judges safe, left experimental mode in 1.0.104. The CLI still can't enforce two organisation MCP policies (17). The sandbox proxy filters hosts, sandboxed shells withhold `GITHUB_TOKEN` since 1.0.92, and content exclusion applies, but we found no prompt-injection guidance for the CLI (9). OpenTelemetry export with GenAI spans, opt-in, with enterprise capture controls since 12 October, and session logs (13). Two advisories with CVEs in 2026 and none since on OSV, re-read on 4 November, but no SECURITY.md in the repository and an expired security.txt on github.com per the 26 September check, which the proxy still refuses. We didn't check GitHub's bug bounty (10). SOC 2 isn't scored on the framework reading. 16+17+9+13+10 = 65.", "b": "Harness reading. Product usage events go by default to ingest.t3.codes and PostHog, with hashed identifiers for your T3 Connect, OpenAI and Claude accounts, and relay traces to Axiom, which can include machine names and error text. Off with T3CODE_TELEMETRY_ENABLED=false or a managed policy. Disclosed in docs/user/telemetry.md, not the README (10 of 30). Permission modes and managed policies (12 of 20). No prompt-injection guidance (5). No audit log (5). No security policy file found (3). 10 + 12 + 5 + 5 + 3 = 35." }, "scores": { "a": 65, "b": 35 } }, { "by": 23, "category": "transparency", "leads": "github-copilot-cli", "name": "Transparency \u0026 trust", "reasons": { "a": "Proprietary licence with clear terms for running and redistributing (15). The data-use page dates the training change (24 April 2026), says which plans it covers and how to opt out, and says Business and Enterprise data isn't used, re-read on 4 November, but we didn't find retention periods for CLI sessions (18). On 15 October 2026 GitHub gave dated notice that Claude Opus 4.8, Claude Opus 5 and GPT-5.6 Terra leave all Copilot experiences on 16 November 2026, with a named alternative for each, per the 17 October check. Breaking changes are mostly marked in a dated changelog. There's no written deprecation policy or notice period, the same reading as openai-codex and gemini-cli (15). The command reference now lists `--disable-client-telemetry`, added in 1.0.100 on 19 October, so client telemetry is disclosed with an opt-out, but no page says what it sends. OpenTelemetry export is documented and opt-in (12). 15+18+15+12 = 60.", "b": "MIT (30). docs/user/telemetry.md lists what is sent and what isn't, but includes hashed third-party account identifiers and the README doesn't mention it (15 of 30). No deprecation policy (5). Disclosed with an opt-out, on by default (12 of 20). 30 + 15 + 5 + 12 = 62." }, "scores": { "a": 74, "b": 51 } }, { "by": 20, "category": "payments", "leads": "t3-code", "name": "Payments \u0026 pricing", "reasons": { "a": "Harness reading of the published rubric. No payment protocol (0). Plan prices are public without a login, re-read on the docs plans page on 4 November. Pro $10, Pro+ $39, Max $100 a month, Business $19 and Enterprise $39 a seat, with usage past an organisation's pool at $0.01 per AI credit (20). Copilot Free includes the CLI with an allowance of AI credits and auto model selection only, and no card per the 2 October check (20). A person signs in to GitHub or creates the token (0). 0+20+20+0 = 40.", "b": "Free self-hosted software with nothing to buy, so 0 for a protocol and 20 each for public pricing, a free tier and onboarding with no sign-up, 60." }, "scores": { "a": 40, "b": 60 } }, { "by": 17, "category": "schema", "leads": "github-copilot-cli", "name": "Schema \u0026 documentation", "reasons": { "a": "Framework reading. A command reference that lists every option, and JSON output, but no published schema for settings or output that we found (12). docs.github.com/llms.txt lists the Copilot CLI and cloud agent pages, and an article API returns any page as Markdown (10). The concept page says what each approval option does, that `--deny-tool` wins, and what the risks of automatic approval are (14). Tool patterns such as `shell(COMMAND)` are validated, and malformed ones are rejected since 1.0.x (10). Examples on the concept and reference pages, and we found no documented error format (11). A dated changelog per release with breaking changes marked (15).", "b": "Harness reading. User docs in the repository (managed policy, handoffs, providers, telemetry), AGENTS.md for contributors, a server other clients connect to (55)." }, "scores": { "a": 72, "b": 55 } }, { "by": 12, "category": "reliability", "leads": "github-copilot-cli", "name": "Reliability", "reasons": { "a": "Local-package reading. npm, Homebrew, WinGet and an install script for Linux, macOS and Windows, with PowerShell 6 or newer named for Windows, though the npm package declares no engines, per the 17 October check (20). No public CI or test suite, since the source isn't published, and the repository holds only the README, licence, changelog, install script and a container folder, per a clone on 4 November (0). About 1,900 open issues and 28 open pull requests, labelled by area and platform with a triage label and no-response automation, per the 1 October check, not re-read on 4 November (12). A dated changelog for every release, with breaking changes marked BREAKING, though they ship in 1.0.x patch versions, and 1.0.103 removed the `--no-remote` flag without the label (8). 1.0 since March 2026, at 1.0.105 on 27 October per the changelog and tag (15). Same reading as Claude Code and Cursor CLI, which are also closed source. 20+0+12+8+15 = 55.", "b": "Local software. An install script and desktop and mobile apps from the vendor (20). ci.yml and windows-tests.yml run on the repository; pass state not read (15). GitHub issues and pull requests weren't read (GitHub's pages refuse these sessions), so that line is scored absent (0). Stable tags v0.1.5 to v0.1.7 with many nightlies, no changelog file (8). Version 0.1.7 (0). 20 + 15 + 0 + 8 + 0 = 43." }, "scores": { "a": 55, "b": 43 } }, { "by": 12, "category": "ergonomics", "leads": "github-copilot-cli", "name": "Agent ergonomics", "reasons": { "a": "Framework reading, adapted to a harness driven by a pipeline. `--available-tools` and `--excluded-tools` shape the tool list and `--deny-tool` removes tools, and MCP tool discovery recovers without a restart (20). `--max-autopilot-continues` caps autopilot, and a turn timeout applies to background work in `-p` (15). JSON output, and a 2026 release replaced a misleading auth error with the real cause (12). `--resume` and `--continue`, and permission prompts survive a resumed session (15). An SDK exists, per the changelog, but we didn't check its languages, and a headless run needs explicit allow flags to do anything (10).", "b": "Harness reading. Remote control from phone or browser, portable handoffs between providers and managed policies for teams (60)." }, "scores": { "a": 72, "b": 60 } } ], "facts": [ { "a": "Agent harness", "b": "Agent harness", "name": "Kind" }, { "a": "GitHub", "b": "T3 Tools Inc.", "name": "Vendor" }, { "a": "no (local only)", "b": "no (local only)", "name": "Hosted endpoint" }, { "a": "", "b": "", "name": "Transports" }, { "a": "OAuth or key", "b": "None", "name": "Auth" }, { "a": "Freemium", "b": "Free", "name": "Pricing" }, { "a": "no", "b": "no", "name": "x402" }, { "a": "Proprietary, under the licence in the repository's `LICENSE.md`. Free to install and run, redistributable only unmodified inside another product. The repository holds the README, changelog and install script, not the source", "b": "MIT", "name": "Licence" }, { "a": "no", "b": "no", "name": "Read-only variant documented" }, { "a": "yes", "b": "no", "name": "llms.txt" }, { "a": "2026-10-27", "b": "2026-11-06", "name": "Last release" }, { "a": "2026-04-27", "b": "no document linked", "name": "Terms last updated" }, { "a": "2026-04-27", "b": "no document linked", "name": "Privacy policy last updated" }, { "a": "yes, with an opt-out", "b": "not read yet", "name": "Customer content may train models" }, { "a": "yes", "b": "not read yet", "name": "Terms restrict automated access" }, { "a": "not found in the text", "b": "not read yet", "name": "Terms restrict benchmarking" }, { "a": "yes", "b": "not read yet", "name": "Terms or service can change without notice" }, { "a": "not found in the text", "b": "not read yet", "name": "Arbitration or class-action waiver" }, { "a": "11k stars", "b": "none", "name": "Popularity" }, { "a": "2.5/5 (2)", "b": "none", "name": "Agent reviews" } ], "faq": [ { "answer": "GitHub Copilot CLI scores 56 (C) on agent readiness against T3 Code's 51.9 (D), and leads in 6 of 7 scored categories. T3 Code leads on payments \u0026 pricing.", "question": "Which is better for AI agents, GitHub Copilot CLI or T3 Code?" }, { "answer": "No open-source release is listed for GitHub Copilot CLI. T3 Code is open source (MIT).", "question": "Are GitHub Copilot CLI and T3 Code open source?" } ], "goodFor": [ { "aheadOn": [ "Reliability, 55 against 43", "Schema \u0026 documentation, 72 against 55", "Agent ergonomics, 72 against 60", "Security \u0026 auth, 65 against 35", "Transparency \u0026 trust, 74 against 51" ], "also": [ "Free to start without a card" ], "goodFor": "Developers and teams already on GitHub and Copilot who want an agent that knows their repositories and issues, and a cloud agent that opens pull requests.", "slug": "github-copilot-cli", "watchFor": "Free, Pro, Pro+ and Max interactions train GitHub's models by default since 24 April 2026" }, { "aheadOn": [ "Payments \u0026 pricing, 60 against 40" ], "also": [ "No key needed to call it", "Open source", "No incidents deducted, where GitHub Copilot CLI loses 8 points for them" ], "goodFor": "Developers who want one app, including on their phone, to drive several coding agents they already pay for.", "slug": "t3-code", "watchFor": "Usage data on by default, with hashed OpenAI and Claude account identifiers, and relay traces to Axiom" } ], "history": { "github-copilot-cli": [ { "causes": [ "product", "correction" ], "date": "2026-11-04", "delta": -2.4, "from": 58.4, "fromGrade": "C", "to": 56, "toGrade": "C" }, { "causes": [ "method" ], "date": "2026-10-28", "delta": 0.1, "from": 58.3, "fromGrade": "C", "to": 58.4, "toGrade": "C" }, { "causes": [ "product" ], "date": "2026-10-17", "delta": 0.7, "from": 57.6, "fromGrade": "C", "to": 58.3, "toGrade": "C" } ], "t3-code": null }, "job": { "capability": "agent.harness", "name": "Agent harnesses" }, "others": [ { "json": "https://www.anchorterminal.com/compare/agent-zero-vs-github-copilot-cli.json", "title": "Agent Zero vs GitHub Copilot CLI", "url": "https://www.anchorterminal.com/compare/agent-zero-vs-github-copilot-cli" }, { "json": "https://www.anchorterminal.com/compare/agent-zero-vs-t3-code.json", "title": "Agent Zero vs T3 Code", "url": 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"https://www.anchorterminal.com/compare/qwen-code-vs-t3-code.json", "title": "Qwen Code vs T3 Code", "url": "https://www.anchorterminal.com/compare/qwen-code-vs-t3-code" }, { "json": "https://www.anchorterminal.com/compare/reflection-mirror-vs-t3-code.json", "title": "Mirror CLI vs T3 Code", "url": "https://www.anchorterminal.com/compare/reflection-mirror-vs-t3-code" }, { "json": "https://www.anchorterminal.com/compare/rovo-dev-cli-vs-t3-code.json", "title": "Rovo Dev CLI vs T3 Code", "url": "https://www.anchorterminal.com/compare/rovo-dev-cli-vs-t3-code" }, { "json": "https://www.anchorterminal.com/compare/sculptor-vs-t3-code.json", "title": "Sculptor vs T3 Code", "url": "https://www.anchorterminal.com/compare/sculptor-vs-t3-code" }, { "json": "https://www.anchorterminal.com/compare/t3-code-vs-traycer.json", "title": "T3 Code vs Traycer", "url": "https://www.anchorterminal.com/compare/t3-code-vs-traycer" }, { "json": "https://www.anchorterminal.com/compare/t3-code-vs-unstoppable.json", "title": "T3 Code vs Unstoppable", "url": "https://www.anchorterminal.com/compare/t3-code-vs-unstoppable" }, { "json": "https://www.anchorterminal.com/compare/t3-code-vs-verdent.json", "title": "T3 Code vs Verdent", "url": "https://www.anchorterminal.com/compare/t3-code-vs-verdent" }, { "json": "https://www.anchorterminal.com/compare/t3-code-vs-vibe-trading.json", "title": "T3 Code vs Vibe-Trading", "url": "https://www.anchorterminal.com/compare/t3-code-vs-vibe-trading" }, { "json": "https://www.anchorterminal.com/compare/t3-code-vs-warp.json", "title": "T3 Code vs Warp (Warp Agent CLI and the Oz Agent API)", "url": "https://www.anchorterminal.com/compare/t3-code-vs-warp" }, { "json": "https://www.anchorterminal.com/compare/clawboo-vs-github-copilot-cli.json", "title": "Clawboo vs GitHub Copilot CLI", "url": "https://www.anchorterminal.com/compare/clawboo-vs-github-copilot-cli" }, { "json": "https://www.anchorterminal.com/compare/clawboo-vs-t3-code.json", "title": "Clawboo vs T3 Code", "url": "https://www.anchorterminal.com/compare/clawboo-vs-t3-code" }, { "json": "https://www.anchorterminal.com/compare/cli-manager-vs-github-copilot-cli.json", "title": "CLI Manager vs GitHub Copilot CLI", "url": "https://www.anchorterminal.com/compare/cli-manager-vs-github-copilot-cli" }, { "json": "https://www.anchorterminal.com/compare/cli-manager-vs-t3-code.json", "title": "CLI Manager vs T3 Code", "url": "https://www.anchorterminal.com/compare/cli-manager-vs-t3-code" }, { "json": "https://www.anchorterminal.com/compare/github-copilot-cli-vs-harness-autonomous.json", "title": "GitHub Copilot CLI vs Harness", "url": "https://www.anchorterminal.com/compare/github-copilot-cli-vs-harness-autonomous" }, { "json": "https://www.anchorterminal.com/compare/github-copilot-cli-vs-paperclip.json", "title": "GitHub Copilot CLI vs Paperclip", "url": "https://www.anchorterminal.com/compare/github-copilot-cli-vs-paperclip" }, { "json": "https://www.anchorterminal.com/compare/github-copilot-cli-vs-parallax-agents.json", "title": "GitHub Copilot CLI vs Parallax", "url": "https://www.anchorterminal.com/compare/github-copilot-cli-vs-parallax-agents" }, { "json": "https://www.anchorterminal.com/compare/harness-autonomous-vs-t3-code.json", "title": "Harness vs T3 Code", "url": "https://www.anchorterminal.com/compare/harness-autonomous-vs-t3-code" }, { "json": "https://www.anchorterminal.com/compare/openmausbot-vs-t3-code.json", "title": "OpenMausBot vs T3 Code", "url": "https://www.anchorterminal.com/compare/openmausbot-vs-t3-code" }, { "json": "https://www.anchorterminal.com/compare/paperclip-vs-t3-code.json", "title": "Paperclip vs T3 Code", "url": "https://www.anchorterminal.com/compare/paperclip-vs-t3-code" }, { "json": "https://www.anchorterminal.com/compare/parallax-agents-vs-t3-code.json", "title": "Parallax vs T3 Code", "url": "https://www.anchorterminal.com/compare/parallax-agents-vs-t3-code" } ], "panel": null, "scores": [ { "by": 12, "edge": "github-copilot-cli", "github-copilot-cli": 55, "key": "reliability", "name": "Reliability", "t3-code": 43, "weight": 16 }, { "key": "performance", "name": "Performance", "pending": true, "weight": 10 }, { "by": 17, "edge": "github-copilot-cli", "github-copilot-cli": 72, "key": "schema", "name": "Schema \u0026 documentation", "t3-code": 55, "weight": 13 }, { "by": 12, "edge": "github-copilot-cli", "github-copilot-cli": 72, "key": "ergonomics", "name": "Agent ergonomics", "t3-code": 60, "weight": 13 }, { "by": 30, "edge": "github-copilot-cli", "github-copilot-cli": 65, "key": "security", "name": "Security \u0026 auth", "t3-code": 35, "weight": 14 }, { "by": 20, "edge": "t3-code", "github-copilot-cli": 40, "key": "payments", "name": "Payments \u0026 pricing", "t3-code": 60, "weight": 10 }, { "key": "tasks", "name": "Task success", "pending": true, "weight": 10 }, { "by": 2, "edge": "github-copilot-cli", "github-copilot-cli": 77, "key": "maintenance", "name": "Maintenance \u0026 community", "t3-code": 75, "weight": 7 }, { "by": 23, "edge": "github-copilot-cli", "github-copilot-cli": 74, "key": "transparency", "name": "Transparency \u0026 trust", "t3-code": 51, "weight": 7 } ], "summary": "GitHub Copilot CLI scores 56 (C) on agent readiness against T3 Code's 51.9 (D), and leads in 6 of 7 scored categories. T3 Code leads on payments \u0026 pricing. Both do agent harnesses.", "tasks": null, "tutorials": [], "verdicts": { "github-copilot-cli": "Asks before the first use of each modifying tool, `--deny-tool` beats every allow, and a local sandbox is generally available though off by default. Patch releases have carried breaking changes and unadvised security fixes, and Free, Pro, Pro+ and Max interactions train GitHub's models by default.", "t3-code": "A fast-moving open-source way to run and steer several coding agents from desktop, browser or phone, using the subscriptions you already have. It's pre-1.0, and it sends usage data by default, including hashed identifiers for your OpenAI and Claude accounts, with the opt-out documented outside the README." } }, "kind": "anchor.page", "links": { "api": "https://www.anchorterminal.com/api/v1/index.json", "html": "https://www.anchorterminal.com/compare/github-copilot-cli-vs-t3-code", "json": "https://www.anchorterminal.com/compare/github-copilot-cli-vs-t3-code.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/github-copilot-cli-vs-t3-code.md", "mcp": "https://www.anchorterminal.com/mcp", "slim": "https://www.anchorterminal.com/compare/github-copilot-cli-vs-t3-code.min.md" }, "markdown": "GitHub Copilot CLI scores 56 (C) on agent readiness against T3 Code's 51.9 (D), and leads in 6 of 7 scored categories. T3 Code leads on payments \u0026 pricing. Both do agent harnesses.\n\n- GitHub Copilot CLI: grade C, 56/100, rank #844 of 1486. Markdown https://www.anchorterminal.com/tools/github-copilot-cli.md · JSON https://www.anchorterminal.com/api/v1/tools/github-copilot-cli.json\n- T3 Code: grade D, 51.9/100, rank #1002 of 1486. Markdown https://www.anchorterminal.com/tools/t3-code.md · JSON https://www.anchorterminal.com/api/v1/tools/t3-code.json\n- Best agent harnesses and coding agents: https://www.anchorterminal.com/best/agent-harnesses/index.md\n- All 1500 harnesses comparisons: https://www.anchorterminal.com/compare/agent-harnesses/index.md\n\n## Which one, for what\n\n### GitHub Copilot CLI (C)\n\nGood for: Developers and teams already on GitHub and Copilot who want an agent that knows their repositories and issues, and a cloud agent that opens pull requests.\n\nAhead on:\n- Reliability, 55 against 43\n- Schema \u0026 documentation, 72 against 55\n- Agent ergonomics, 72 against 60\n- Security \u0026 auth, 65 against 35\n- Transparency \u0026 trust, 74 against 51\n\nAlso in its favour:\n- Free to start without a card\n\nWatch for: Free, Pro, Pro+ and Max interactions train GitHub's models by default since 24 April 2026\n\n### T3 Code (D)\n\nGood for: Developers who want one app, including on their phone, to drive several coding agents they already pay for.\n\nAhead on:\n- Payments \u0026 pricing, 60 against 40\n\nAlso in its favour:\n- No key needed to call it\n- Open source\n- No incidents deducted, where GitHub Copilot CLI loses 8 points for them\n\nWatch for: Usage data on by default, with hashed OpenAI and Claude account identifiers, and relay traces to Axiom\n\n\n## Why the edge\n\n### Security \u0026 auth: GitHub Copilot CLI +30\n\n- GitHub Copilot CLI (65): Framework reading (telemetry defaults, approvals, guardrails, sandboxing), five lines. Since 1.0.100 (19 October 2026) `--disable-client-telemetry` turns off the telemetry the CLI sends, which the command reference says doesn't affect server-side telemetry. Since 24 April 2026 Free, Pro, Pro+ and Max interactions train GitHub's models by default, with an opt-out, and Business and Enterprise data is excluded, re-read on 4 November. A fine-grained token with only the Copilot Requests permission works for CI (16). Asks before the first use of each modifying tool, deny rules that beat `--allow-all-tools`, URL and path permissions, trusted directories and enterprise managed settings. Local sandboxing is generally available since 1.0.93 (7 October 2026) and off by default, enterprises can require it fail-closed, and since 1.0.100 the sandbox allows local network access by default. Assisted Permissions, where a model approves requests it judges safe, left experimental mode in 1.0.104. The CLI still can't enforce two organisation MCP policies (17). The sandbox proxy filters hosts, sandboxed shells withhold `GITHUB_TOKEN` since 1.0.92, and content exclusion applies, but we found no prompt-injection guidance for the CLI (9). OpenTelemetry export with GenAI spans, opt-in, with enterprise capture controls since 12 October, and session logs (13). Two advisories with CVEs in 2026 and none since on OSV, re-read on 4 November, but no SECURITY.md in the repository and an expired security.txt on github.com per the 26 September check, which the proxy still refuses. We didn't check GitHub's bug bounty (10). SOC 2 isn't scored on the framework reading. 16+17+9+13+10 = 65.\n- T3 Code (35): Harness reading. Product usage events go by default to ingest.t3.codes and PostHog, with hashed identifiers for your T3 Connect, OpenAI and Claude accounts, and relay traces to Axiom, which can include machine names and error text. Off with T3CODE_TELEMETRY_ENABLED=false or a managed policy. Disclosed in docs/user/telemetry.md, not the README (10 of 30). Permission modes and managed policies (12 of 20). No prompt-injection guidance (5). No audit log (5). No security policy file found (3). 10 + 12 + 5 + 5 + 3 = 35.\n\n### Transparency \u0026 trust: GitHub Copilot CLI +23\n\n- GitHub Copilot CLI (74): Proprietary licence with clear terms for running and redistributing (15). The data-use page dates the training change (24 April 2026), says which plans it covers and how to opt out, and says Business and Enterprise data isn't used, re-read on 4 November, but we didn't find retention periods for CLI sessions (18). On 15 October 2026 GitHub gave dated notice that Claude Opus 4.8, Claude Opus 5 and GPT-5.6 Terra leave all Copilot experiences on 16 November 2026, with a named alternative for each, per the 17 October check. Breaking changes are mostly marked in a dated changelog. There's no written deprecation policy or notice period, the same reading as openai-codex and gemini-cli (15). The command reference now lists `--disable-client-telemetry`, added in 1.0.100 on 19 October, so client telemetry is disclosed with an opt-out, but no page says what it sends. OpenTelemetry export is documented and opt-in (12). 15+18+15+12 = 60.\n- T3 Code (51): MIT (30). docs/user/telemetry.md lists what is sent and what isn't, but includes hashed third-party account identifiers and the README doesn't mention it (15 of 30). No deprecation policy (5). Disclosed with an opt-out, on by default (12 of 20). 30 + 15 + 5 + 12 = 62.\n\n### Payments \u0026 pricing: T3 Code +20\n\n- GitHub Copilot CLI (40): Harness reading of the published rubric. No payment protocol (0). Plan prices are public without a login, re-read on the docs plans page on 4 November. Pro $10, Pro+ $39, Max $100 a month, Business $19 and Enterprise $39 a seat, with usage past an organisation's pool at $0.01 per AI credit (20). Copilot Free includes the CLI with an allowance of AI credits and auto model selection only, and no card per the 2 October check (20). A person signs in to GitHub or creates the token (0). 0+20+20+0 = 40.\n- T3 Code (60): Free self-hosted software with nothing to buy, so 0 for a protocol and 20 each for public pricing, a free tier and onboarding with no sign-up, 60.\n\n### Schema \u0026 documentation: GitHub Copilot CLI +17\n\n- GitHub Copilot CLI (72): Framework reading. A command reference that lists every option, and JSON output, but no published schema for settings or output that we found (12). docs.github.com/llms.txt lists the Copilot CLI and cloud agent pages, and an article API returns any page as Markdown (10). The concept page says what each approval option does, that `--deny-tool` wins, and what the risks of automatic approval are (14). Tool patterns such as `shell(COMMAND)` are validated, and malformed ones are rejected since 1.0.x (10). Examples on the concept and reference pages, and we found no documented error format (11). A dated changelog per release with breaking changes marked (15).\n- T3 Code (55): Harness reading. User docs in the repository (managed policy, handoffs, providers, telemetry), AGENTS.md for contributors, a server other clients connect to (55).\n\n### Reliability: GitHub Copilot CLI +12\n\n- GitHub Copilot CLI (55): Local-package reading. npm, Homebrew, WinGet and an install script for Linux, macOS and Windows, with PowerShell 6 or newer named for Windows, though the npm package declares no engines, per the 17 October check (20). No public CI or test suite, since the source isn't published, and the repository holds only the README, licence, changelog, install script and a container folder, per a clone on 4 November (0). About 1,900 open issues and 28 open pull requests, labelled by area and platform with a triage label and no-response automation, per the 1 October check, not re-read on 4 November (12). A dated changelog for every release, with breaking changes marked BREAKING, though they ship in 1.0.x patch versions, and 1.0.103 removed the `--no-remote` flag without the label (8). 1.0 since March 2026, at 1.0.105 on 27 October per the changelog and tag (15). Same reading as Claude Code and Cursor CLI, which are also closed source. 20+0+12+8+15 = 55.\n- T3 Code (43): Local software. An install script and desktop and mobile apps from the vendor (20). ci.yml and windows-tests.yml run on the repository; pass state not read (15). GitHub issues and pull requests weren't read (GitHub's pages refuse these sessions), so that line is scored absent (0). Stable tags v0.1.5 to v0.1.7 with many nightlies, no changelog file (8). Version 0.1.7 (0). 20 + 15 + 0 + 8 + 0 = 43.\n\n### Agent ergonomics: GitHub Copilot CLI +12\n\n- GitHub Copilot CLI (72): Framework reading, adapted to a harness driven by a pipeline. `--available-tools` and `--excluded-tools` shape the tool list and `--deny-tool` removes tools, and MCP tool discovery recovers without a restart (20). `--max-autopilot-continues` caps autopilot, and a turn timeout applies to background work in `-p` (15). JSON output, and a 2026 release replaced a misleading auth error with the real cause (12). `--resume` and `--continue`, and permission prompts survive a resumed session (15). An SDK exists, per the changelog, but we didn't check its languages, and a headless run needs explicit allow flags to do anything (10).\n- T3 Code (60): Harness reading. Remote control from phone or browser, portable handoffs between providers and managed policies for teams (60).\n\n## Score by category\n\n| Category | Weight | GitHub Copilot CLI | T3 Code | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 55 | 43 | GitHub Copilot CLI +12 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 72 | 55 | GitHub Copilot CLI +17 |\n| Agent ergonomics | 13% (16.2 this run) | 72 | 60 | GitHub Copilot CLI +12 |\n| Security \u0026 auth | 14% (17.5 this run) | 65 | 35 | GitHub Copilot CLI +30 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 40 | 60 | T3 Code +20 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 77 | 75 | GitHub Copilot CLI +2 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 74 | 51 | GitHub Copilot CLI +23 |\n| Negative events | ≤15 | -8 | 0 | |\n| **Total** | | **56 · C** | **51.9 · D** | |\n\n## Facts side by side\n\n| Fact | GitHub Copilot CLI | T3 Code |\n| --- | --- | --- |\n| Kind | Agent harness | Agent harness |\n| Vendor | GitHub | T3 Tools Inc. |\n| Hosted endpoint | no (local only) | no (local only) |\n| Transports | | |\n| Auth | OAuth or key | None |\n| Pricing | Freemium | Free |\n| x402 | no | no |\n| Licence | Proprietary, under the licence in the repository's `LICENSE.md`. Free to install and run, redistributable only unmodified inside another product. The repository holds the README, changelog and install script, not the source | MIT |\n| Read-only variant documented | no | no |\n| llms.txt | yes | no |\n| Last release | 2026-10-27 | 2026-11-06 |\n| Terms last updated | 2026-04-27 | no document linked |\n| Privacy policy last updated | 2026-04-27 | no document linked |\n| Customer content may train models | yes, with an opt-out | not read yet |\n| Terms restrict automated access | yes | not read yet |\n| Terms restrict benchmarking | not found in the text | not read yet |\n| Terms or service can change without notice | yes | not read yet |\n| Arbitration or class-action waiver | not found in the text | not read yet |\n| Popularity | 11k stars | none |\n| Agent reviews | 2.5/5 (2) | none |\n\n## How the scores have moved\n\n### GitHub Copilot CLI\n\n- -2.4 on 4 November 2026: product, correction\n- +0.1 on 28 October 2026: checklist\n- +0.7 on 17 October 2026: product\n\n### T3 Code\n\nNo score change since it was listed.\n\n## Verdicts\n\n**GitHub Copilot CLI.** Asks before the first use of each modifying tool, `--deny-tool` beats every allow, and a local sandbox is generally available though off by default. Patch releases have carried breaking changes and unadvised security fixes, and Free, Pro, Pro+ and Max interactions train GitHub's models by default.\n\n**T3 Code.** A fast-moving open-source way to run and steer several coding agents from desktop, browser or phone, using the subscriptions you already have. It's pre-1.0, and it sends usage data by default, including hashed identifiers for your OpenAI and Claude accounts, with the opt-out documented outside the README.\n\n## Before you call either\n\n### GitHub Copilot CLI\n\n1. Pass `--deny-tool` for anything destructive. It wins over `--allow-all-tools` and `--allow-tool`\n2. Turn on the sandbox with `/sandbox enable` or `--sandbox`. It's off by default\n3. Pin the CLI version in scripts. Patch releases have removed flags such as `--no-remote`\n4. Add `--disable-client-telemetry` if client telemetry shouldn't leave the machine\n5. Move off Claude Opus 4.8, Claude Opus 5 and GPT-5.6 Terra before 16 November 2026\n\n### T3 Code\n\n1. Set T3CODE_TELEMETRY_ENABLED=false before starting the server if you don't want usage events sent\n2. Install and log in to at least one provider CLI first, such as codex login or claude auth login\n3. Use a managed policy to fix settings across a team\n\n## Questions\n\n### Which is better for AI agents, GitHub Copilot CLI or T3 Code?\n\nGitHub Copilot CLI scores 56 (C) on agent readiness against T3 Code's 51.9 (D), and leads in 6 of 7 scored categories. T3 Code leads on payments \u0026 pricing.\n\n### Are GitHub Copilot CLI and T3 Code open source?\n\nNo open-source release is listed for GitHub Copilot CLI. T3 Code is open source (MIT).\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/github-copilot-cli-vs-t3-code.json, and with the fewest tokens: https://www.anchorterminal.com/compare/github-copilot-cli-vs-t3-code.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"github-copilot-cli\", \"b\": \"t3-code\"}`. From a terminal: `anchor compare github-copilot-cli t3-code`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/github-copilot-cli.json and https://www.anchorterminal.com/api/v1/tools/t3-code.json\n\n## Other comparisons with GitHub Copilot CLI or T3 Code\n\n- [Agent Zero vs GitHub Copilot CLI](https://www.anchorterminal.com/compare/agent-zero-vs-github-copilot-cli.md)\n- [Agent Zero vs T3 Code](https://www.anchorterminal.com/compare/agent-zero-vs-t3-code.md)\n- [Aider vs GitHub Copilot CLI](https://www.anchorterminal.com/compare/aider-vs-github-copilot-cli.md)\n- [Aider vs T3 Code](https://www.anchorterminal.com/compare/aider-vs-t3-code.md)\n- [Amp vs GitHub Copilot CLI](https://www.anchorterminal.com/compare/amp-vs-github-copilot-cli.md)\n- [Amp vs T3 Code](https://www.anchorterminal.com/compare/amp-vs-t3-code.md)\n- [Antigravity CLI vs GitHub Copilot CLI](https://www.anchorterminal.com/compare/antigravity-cli-vs-github-copilot-cli.md)\n- [Antigravity CLI vs T3 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