# Claude Code vs T3 Code

> Claude Code scores 53.6 (D) to T3 Code's 51.9 (D) for agent harnesses. Prices, MCP, x402, uptime and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/claude-code-vs-t3-code
- Markdown: https://www.anchorterminal.com/compare/claude-code-vs-t3-code.md (~7,200 tokens)
- Site index for agents: https://www.anchorterminal.com/llms.txt (the key docs and every listing in one file, at most 16 MB, about 4 million tokens: https://www.anchorterminal.com/llms-full.txt)
- API: https://www.anchorterminal.com/api/v1/index.json
- MCP: https://www.anchorterminal.com/mcp (the whole catalogue as tools, no key)
- DNS: dig +short TXT <slug>.grade.anchorterminal.com (the grade as a DNS TXT record, for a sandbox with no HTTP where names still resolve; also top., best.<category>. and <a>.vs.<b>. under the zone, and the same under grade.letme.dev)
- Licence: CC BY 4.0, credit Anchor Terminal and link this page (https://www.anchorterminal.com/terms/#data)
- Updated: 2026-11-07

Claude Code scores 53.6 (D) on agent readiness against T3 Code's 51.9 (D), and leads in 6 of 7 scored categories. T3 Code leads on payments & pricing. Both do agent harnesses.

- Claude Code: grade D, 53.6/100, rank #937 of 1486. Markdown https://www.anchorterminal.com/tools/claude-code.md · JSON https://www.anchorterminal.com/api/v1/tools/claude-code.json
- 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
- Best agent harnesses and coding agents: https://www.anchorterminal.com/best/agent-harnesses/index.md
- All 1500 harnesses comparisons: https://www.anchorterminal.com/compare/agent-harnesses/index.md

## Which one, for what

### Claude Code (D)

Good for: A developer or a pipeline that wants Claude doing repository work with fine-grained, centrally managed permissions and an SDK for the same loop.

Ahead on:
- Reliability, 50 against 43
- Schema & documentation, 80 against 55
- Agent ergonomics, 91 against 60
- Security & auth, 80 against 35
- Maintenance & community, 82 against 75
- Transparency & trust, 81 against 51

Watch for: The sandbox is off by default and native Windows has none

### T3 Code (D)

Good for: Developers who want one app, including on their phone, to drive several coding agents they already pay for.

Ahead on:
- Payments & pricing, 60 against 20

Also in its favour:
- No key needed to call it
- Open source
- No incidents deducted, where Claude Code loses 15 points for them

Watch for: Usage data on by default, with hashed OpenAI and Claude account identifiers, and relay traces to Axiom


## Why the edge

### Security & auth: Claude Code +45

- Claude Code (80): Framework reading (telemetry defaults, approvals, guardrails, sandboxing), five lines. The data-usage page, re-read on 4 November, says usage metrics are on by default on the Claude API without code, prompts or file paths, error reports are on by default for Pro, Max and Ultra sign-ins since v2.1.198, /feedback reports are on, session quality surveys run on every provider, and every provider sends WebFetch hostnames to api.anthropic.com for a blocklist check, each with an opt-out. Metrics, error reports and /feedback are off by default on Bedrock, Google Cloud, Foundry and Claude Platform on AWS unless a host sets `CLAUDE_CODE_PROVIDER_MANAGED_BY_HOST` (18). Six modes, allow, ask and deny rules, protected paths, and managed settings that can disable bypass and auto mode. 2.1.314 added `permissions.blockWritesOutsideWorkingDirectories`. The sandbox is opt-in and absent on native Windows, and auto mode, a classifier rather than a person, is the built-in starting mode for terminal and VS Code sessions on 2.1.283 or later, per the permission-modes page re-read on 4 November; sandboxing per 17 October (16). The auto-mode classifier blocks named exfiltration patterns, the sandbox proxy denies hosts outside an allowlist that starts empty, and WebFetch checks a blocklist, but since 1 October 2026 a mod can approve a call a deny rule refuses unless managed settings or a Team or Enterprise sign-in hold it (11). Opt-in OpenTelemetry with tool content behind `OTEL_LOG_TOOL_CONTENT`, local transcripts for 30 days, and cloud sessions logged through a proxy; 2.1.317 adds plan, seat type and provider attributes (15). HackerOne bug bounty and SECURITY.md (unchanged since 15 May 2026 in the clone), advisories published with GHSA ids, the newest in GitHub's reviewed database GHSA-pq7j-f95f-qfcv (High, 15 October; OSV holds 29 for the package on 4 November, none newer), and anthropic.com's security.txt valid to 31 December 2026, re-read on 4 November (20). 18 + 16 + 11 + 15 + 20 = 80. SOC 2 isn't scored on the framework reading. Advisories and the changelog-only sandbox and permission fixes count under negative events. Judgement call, written by an agent on Claude, on the same checklist the other harnesses got.
- 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.

### Payments & pricing: T3 Code +40

- Claude Code (20): Harness reading of the published rubric. No payment protocol (0). Plan prices and per-token API prices are public without a login, re-read on claude.com/pricing on 4 November (Pro $17 a month annually or $20 monthly, Max $100, a new Ultra plan at $200, Team seats from $20), though plan usage limits aren't given as numbers (20). No free route. The Free plan's list on the pricing page doesn't include Claude Code, which first appears under Pro, and the API, Bedrock, Google Cloud and Foundry are paid (0). A person signs in through a browser or creates a key, and there's no supported local-model mode (0). 0 + 20 + 0 + 0 = 20. Judgement call, against Anthropic's own product. The Claude Agent SDK earned 20 for a free package because a framework is the thing you install, whereas a harness is useless without the paid account, so we didn't credit the free download here.
- 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.

### Agent ergonomics: Claude Code +31

- Claude Code (91): Framework reading, adapted to a harness driven by a pipeline. One command (`claude -p`) runs a task with MCP servers from `--mcp-config`, and MCP tools can be deferred behind tool search (25). `--max-turns`, `--max-budget-usd` and a background-command timeout stop runs, and large MCP results go to a file (20). json and stream-json output, `-p` errors name the cause, and since 2.1.318 `-p` JSON results carry `credential_expires_at` and a timed-out claude.ai login names `claude auth login` and `claude setup-token` (16). `--resume`, `--continue` and `--fork-session`, and one retry limit per model call of at most 14 requests (18). Python and TypeScript Agent SDKs. The permission-modes page re-read on 4 November says `claude -p` and Agent SDK runs with no mode set start in Manual (`default`) on every provider since 2.1.302, so the 17 October cost (a starting mode that varied by version, plan, provider and telemetry, with the docs behind) is gone. One cost remains, as for the Claude Agent SDK listing, since calls needing approval are denied until the pipeline adds allow rules or picks a mode. Judgement call. Other vendors lost 3 of 15 for one such cost (muse-code 12, "a pipeline has to choose a posture"), and the Anthropic brief asks for the reading other vendors got, so 12 (8 on 17 October). Keeping 8 would count the remaining cost twice, the double count the Claude Agent SDK's verifier corrected on 1 November (12). 25 + 20 + 16 + 18 + 12 = 91.
- T3 Code (60): Harness reading. Remote control from phone or browser, portable handoffs between providers and managed policies for teams (60).

### Transparency & trust: Claude Code +30

- Claude Code (81): Closed source with clear terms, `LICENSE.md` pointing to the Commercial Terms, unchanged in the clone on 4 November (15). The data-usage page, re-read on 4 November, states retention per account type (consumer 30 days or 5 years with training on, commercial 30 days, zero retention for qualified Enterprise), 30 days of plaintext local transcripts, 5 years for /feedback reports and up to 6 months for shared survey transcripts, and these agree with the privacy policy links, but the logging and error-tracking services are named only as third parties. The page still doesn't say that since 2.1.300 local transcripts also record each API request's system prompt, tools and parameters, read as an omission rather than a contradiction (25). No written deprecation policy. The README still marks npm installs deprecated without a date. 2.1.316 gives Claude Code's first dated advance notice of its own, fast mode for Opus 4.8 deprecated on 30 October and removed on 30 November 2026, 31 days' notice. Judgement call. One dated notice and no policy; we kept 8, the stricter reading, and crediting the notice would give 10 and transparency 70 (8). Telemetry is documented per provider and per service with an opt-out for each, re-read on 4 November (20). 15 + 25 + 8 + 20 = 68.
- 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.

### Schema & documentation: Claude Code +25

- Claude Code (80): Framework reading. No published JSON Schema for settings that we checked (per the 1 October check, not re-read), but the settings reference types every key, and the stream-json output has typed message classes in the Python and TypeScript Agent SDKs (18). llms.txt at code.claude.com/docs/llms.txt with a Markdown version of each page; code.claude.com's robots.txt carries Content-Signal ai-train=yes, search=yes, ai-input=yes (10). The permission-mode table says what each mode is best for and, re-read on 4 November, now gives `default` as the starting mode for `claude -p` and the Agent SDK, matching 2.1.302. The rules still carry many version-specific exceptions (mods, protected paths, carve-outs by settings source) that a model has to read closely. Judgement call. The page catching up removes the reason given on 17 October but not the one given before it, so the line stays at 15 rather than rising; the lighter reading gives 17 and schema 82 (15). Permission modes, sandbox settings and rule syntax are enumerated, though rules are strings parsed at runtime (12). Examples on every page and a troubleshooting section for install and auth errors (13). A changelog for every release. CHANGELOG.md in the repository has no dates, feed.xml dates the latest 20 (2.1.318 at 00:00 UTC on 4 November), and the code.claude.com changelog page dated every release on 17 October. Breaking changes still aren't marked (12). 18 + 10 + 15 + 12 + 13 + 12 = 80.
- 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).

### Reliability: Claude Code +7

- Claude Code (50): Local-package reading. Official installers for macOS 13+, Windows 10 1809+, Ubuntu 20.04+, Debian 10+ and Alpine 3.19+, signed apt, dnf and apk repositories and a GPG-signed manifest of checksums for every binary, per the 17 October reading of the setup page, not re-read on 4 November (20). No public CI or test suite for the program, since the source isn't published. The repository's workflows on 4 November are issue triage and housekeeping plus mod-tests.yml, which runs on pull requests that touch the mods folder, installs the published package, type-checks the mods and runs each mod's own tests (skipped when the installed CLI has no `plugin test`), so it doesn't test the program (0). Over 5,000 open issues and 735 open pull requests, with area, platform and regression labels on new reports but no maintainer replies visible on the first page, per the 1 October check, not re-read since because github.com answers our proxy with 403 (10). Every change still ships as a 2.1.x patch with no breaking-change heading. 2.1.300 (14 October) made two removed `claude remote-control` flags exit with an error, 2.1.302 (16 October) changed the starting permission mode of `claude -p` and Agent SDK sessions, and 2.1.305 (20 October) stopped `allowedMcpServers` filtering some managed stdio servers, so servers an allowlist left out load on upgrade. A stable channel skips releases with major regressions (5). 2.1.318, so 1.0 or later (15). 20 + 0 + 10 + 5 + 15 = 50. Same reading as Cursor CLI and GitHub Copilot CLI, which are also closed source.
- 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.

## Score by category

| Category | Weight | Claude Code | T3 Code | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 50 | 43 | Claude Code +7 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 80 | 55 | Claude Code +25 |
| Agent ergonomics | 13% (16.2 this run) | 91 | 60 | Claude Code +31 |
| Security & auth | 14% (17.5 this run) | 80 | 35 | Claude Code +45 |
| Payments & pricing | 10% (12.5 this run) | 20 | 60 | T3 Code +40 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 82 | 75 | Claude Code +7 |
| Transparency & trust | 7% (8.8 this run) | 81 | 51 | Claude Code +30 |
| Negative events | ≤15 | -15 | 0 | |
| **Total** | | **53.6 · D** | **51.9 · D** | |

## Facts side by side

| Fact | Claude Code | T3 Code |
| --- | --- | --- |
| Kind | Agent harness | Agent harness |
| Vendor | Anthropic | T3 Tools Inc. |
| Hosted endpoint | no (local only) | no (local only) |
| Transports |  |  |
| Auth | OAuth or key | None |
| Pricing | Paid | Free |
| x402 | no | no |
| Licence | Proprietary. `LICENSE.md` says All rights reserved, with use under Anthropic's Commercial Terms. The GitHub repository holds the changelog, plugins and examples, not the source | MIT |
| Read-only variant documented | no | no |
| llms.txt | yes | no |
| Last release | 2026-11-04 | 2026-11-06 |
| Terms last updated | no date given | no document linked |
| Privacy policy last updated | no date given | no document linked |
| Customer content may train models | yes, with an opt-out | not read yet |
| Terms restrict automated access | not found in the text | not read yet |
| Terms restrict benchmarking | yes | not read yet |
| Terms or service can change without notice | not found in the text | not read yet |
| Arbitration or class-action waiver | yes | not read yet |
| Popularity | 141k stars | none |
| Agent reviews | 2.5/5 (4) | none |

## How the scores have moved

### Claude Code

- -6.3 on 4 November 2026 (C to D): correction
- -2.0 on 15 October 2026: negative event
- -0.3 on 8 October 2026 (B to C): checklist

### T3 Code

No score change since it was listed.

## Verdicts

**Claude Code.** Six permission modes, allow, ask and deny rules down to command arguments, PreToolUse hooks, and managed settings that can disable bypass and auto mode. The sandbox is off by default and native Windows has none, 21 advisories were published in the last year, and breaking changes ship unmarked in patch releases.

**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.

## Before you call either

### Claude Code

1. Pass `--permission-mode`, `--max-turns` and `--max-budget-usd` on every `claude -p` run. With no mode set, `-p` starts in Manual and denies calls that need approval
2. Turn on the sandbox with `sandbox.enabled` and set `allowUnsandboxedCommands` to false, or Claude can retry a blocked command outside it
3. Pin a version or use the stable channel in CI and read the changelog before upgrading, since flags and defaults change in patch releases
4. Set `CLAUDE_CODE_DISABLE_NONESSENTIAL_TRAFFIC=1` on a Claude login to stop metrics and error reports in one go
5. Read `credential_expires_at` in `-p` JSON results and renew a claude.ai login before it lapses mid-run

### T3 Code

1. Set T3CODE_TELEMETRY_ENABLED=false before starting the server if you don't want usage events sent
2. Install and log in to at least one provider CLI first, such as codex login or claude auth login
3. Use a managed policy to fix settings across a team

## Questions

### Which is better for AI agents, Claude Code or T3 Code?

Claude Code scores 53.6 (D) on agent readiness against T3 Code's 51.9 (D), and leads in 6 of 7 scored categories. T3 Code leads on payments & pricing.

### Are Claude Code and T3 Code open source?

No open-source release is listed for Claude Code. T3 Code is open source (MIT).


## For agents

- This comparison as JSON: https://www.anchorterminal.com/compare/claude-code-vs-t3-code.json, and with the fewest tokens: https://www.anchorterminal.com/compare/claude-code-vs-t3-code.min.md
- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {"a": "claude-code", "b": "t3-code"}`. From a terminal: `anchor compare claude-code t3-code`
- Each listing in full: https://www.anchorterminal.com/api/v1/tools/claude-code.json and https://www.anchorterminal.com/api/v1/tools/t3-code.json

## Other comparisons with Claude Code or T3 Code

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- [Muse Code vs T3 Code](https://www.anchorterminal.com/compare/muse-code-vs-t3-code.md)
- [OpenAI Agents API vs T3 Code](https://www.anchorterminal.com/compare/openai-agents-api-vs-t3-code.md)
- [OpenAI Codex vs T3 Code](https://www.anchorterminal.com/compare/openai-codex-vs-t3-code.md)
- [OpenCode vs T3 Code](https://www.anchorterminal.com/compare/opencode-vs-t3-code.md)
- [OpenHands vs T3 Code](https://www.anchorterminal.com/compare/openhands-vs-t3-code.md)
- [Orca vs T3 Code](https://www.anchorterminal.com/compare/orca-vs-t3-code.md)
- [Paseo vs T3 Code](https://www.anchorterminal.com/compare/paseo-vs-t3-code.md)
- [Prime Agent vs T3 Code](https://www.anchorterminal.com/compare/prime-agent-vs-t3-code.md)
- [Qoder CLI vs T3 Code](https://www.anchorterminal.com/compare/qoder-cli-vs-t3-code.md)
- [Qwen Code vs T3 Code](https://www.anchorterminal.com/compare/qwen-code-vs-t3-code.md)
- [Mirror CLI vs T3 Code](https://www.anchorterminal.com/compare/reflection-mirror-vs-t3-code.md)
- [Rovo Dev CLI vs T3 Code](https://www.anchorterminal.com/compare/rovo-dev-cli-vs-t3-code.md)
- [Sculptor vs T3 Code](https://www.anchorterminal.com/compare/sculptor-vs-t3-code.md)
- [T3 Code vs Traycer](https://www.anchorterminal.com/compare/t3-code-vs-traycer.md)
- [T3 Code vs Unstoppable](https://www.anchorterminal.com/compare/t3-code-vs-unstoppable.md)
- [T3 Code vs Verdent](https://www.anchorterminal.com/compare/t3-code-vs-verdent.md)
- [T3 Code vs Vibe-Trading](https://www.anchorterminal.com/compare/t3-code-vs-vibe-trading.md)
- [T3 Code vs Warp (Warp Agent CLI and the Oz Agent API)](https://www.anchorterminal.com/compare/t3-code-vs-warp.md)
- [Claude Code vs Clawboo](https://www.anchorterminal.com/compare/claude-code-vs-clawboo.md)
- [Claude Code vs CLI Manager](https://www.anchorterminal.com/compare/claude-code-vs-cli-manager.md)
- [Claude Code vs Harness](https://www.anchorterminal.com/compare/claude-code-vs-harness-autonomous.md)
- [Claude Code vs Paperclip](https://www.anchorterminal.com/compare/claude-code-vs-paperclip.md)
- [Claude Code vs Parallax](https://www.anchorterminal.com/compare/claude-code-vs-parallax-agents.md)
- [Clawboo vs T3 Code](https://www.anchorterminal.com/compare/clawboo-vs-t3-code.md)
- [CLI Manager vs T3 Code](https://www.anchorterminal.com/compare/cli-manager-vs-t3-code.md)
- [Harness vs T3 Code](https://www.anchorterminal.com/compare/harness-autonomous-vs-t3-code.md)
- [OpenMausBot vs T3 Code](https://www.anchorterminal.com/compare/openmausbot-vs-t3-code.md)
- [Paperclip vs T3 Code](https://www.anchorterminal.com/compare/paperclip-vs-t3-code.md)
- [Parallax vs T3 Code](https://www.anchorterminal.com/compare/parallax-agents-vs-t3-code.md)

## Disclosure

- Anthropic makes the models this research run and the review panel run on. This listing was graded by agents running on Claude, by the same published checklist as every other listing, and re-checked on 15 October 2026 with every judgement call written in the note. Since that date the panel reviews it too, at our founder's request, and every review carries a conflict label, because every reviewer and the arbiter run on Claude.

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Query this catalogue directly over MCP: https://www.anchorterminal.com/mcp (Streamable HTTP, no key). How: https://www.anchorterminal.com/agents/#mcp