# Parallax vs T3 Code

> T3 Code scores 51.9 (D) to Parallax's 38.1 (E) for multi-agent orchestration. Prices, MCP, x402, uptime and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/parallax-agents-vs-t3-code
- Markdown: https://www.anchorterminal.com/compare/parallax-agents-vs-t3-code.md (~5,450 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

T3 Code scores 51.9 (D) on agent readiness against Parallax's 38.1 (E), and leads in 6 of 7 scored categories. Parallax leads on security & auth. Both do multi-agent orchestration.

- Parallax: grade E, 38.1/100, rank #1365 of 1510. Markdown https://www.anchorterminal.com/tools/parallax-agents.md · JSON https://www.anchorterminal.com/api/v1/tools/parallax-agents.json
- T3 Code: grade D, 51.9/100, rank #1008 of 1510. 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

### Parallax (E)

Good for: A developer on a Mac who runs several coding agents across Claude and Codex subscriptions and wants cross-lab review of finished sessions on GitHub.

Ahead on:
- Security & auth, 43 against 35

Watch for: No API, MCP server or CLI reference for the app itself. Captain, subscription fallback and fast merge are described only on the product page

### 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:
- Schema & documentation, 55 against 29
- Agent ergonomics, 60 against 42
- Payments & pricing, 60 against 30
- Maintenance & community, 75 against 56

Also in its favour:
- No key needed to call it
- Open source

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


## Why the edge

### Payments & pricing: T3 Code +30

- Parallax (30): No x402, MPP or L402 (0). Parallax episode credit prices are read from the account after sign-in. Gateway token prices are public at `GET /v1/catalog` with no key, which covers Conifer credit spent by agents (10). $50 of Conifer credit and 5 free episodes on GitHub sign-up, with no card mentioned, and agents can run on the owner's own Claude and Codex subscriptions (20). A person has to download the app, sign in and install the GitHub App, so no autonomous onboarding (0).
- 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.

### Schema & documentation: T3 Code +26

- Parallax (29): The review API has no OpenAPI or endpoint reference. Endpoints appear only in curl examples, and the base URL `$PARALLAX_URL` is not published (0). conifer.build/llms.txt covers the gateway in detail and Parallax in two lines that point to the docs (5). The docs explain sessions, sweeps, evidence states, memory and retention at length, but nothing documents the app, Captain, fallback or fast merge (8). parallax.yml keys are listed with allowed values (`deliver: proven-only`, `review: off`, severity floors, sweep modes), but request and response shapes for the API are not (5). curl examples, sample sweep lines and a table of skip reasons with the fix for each (8). Paths sit under `/v1`, with no changelog for Parallax (3).
- 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).

### Maintenance & community: T3 Code +19

- Parallax (56): v1.0.2 on 16 October 2026 (30). Three releases, v1.0.0 to v1.0.2, on 15 and 16 October 2026 (20). Closed service. No public changelog. Support through a GitHub issues link, a Discord server and email, none of which we could check for replies (3). No Parallax SDK and nothing in the MCP registry. Conifer's SDK is for the gateway (0). Signed builds with checksums and a self-updater, with no CI to inspect (3).
- T3 Code (75): Commits and nightly tags on 6 November 2026 (30). More than three releases in 90 days (20). GitHub issues and pull requests weren't read (GitHub's pages refuse these sessions), so that line is scored absent (0). Current official apps and install script (15). CI on push (10). 30 + 20 + 0 + 15 + 10 = 75.

### Agent ergonomics: T3 Code +18

- Parallax (42): Scored on the review API and the hooks, the only parts an agent touches. The session-start brief is cut at 6,000 characters, memory per review call at 12,000, and `lesson_cap` sets 1 to 20 lessons per person (8). `repo` filters on recall and brief, `brain=true` on the ledger, no documented pagination (4). Skip reasons such as `capture_commit_missing` and `test_configuration_missing` each come with a fix, but HTTP error codes for the API are not documented (12). A session is swept once per capture mark, retries use no extra credit, and a fix PR is reused and never reopened or merged by Parallax (14). No SDK for Parallax, and capture of every repository is the default (4).
- T3 Code (60): Harness reading. Remote control from phone or browser, portable handoffs between providers and managed policies for teams (60).

### Security & auth: Parallax +8

- Parallax (43): Harness reading of the framework checklist, as for the other harnesses. 30 for what leaves the machine by default, 20 for approvals and sandboxing, 15 for prompt-injection posture, 15 for audit and 20 for the security programme. Once installed, capture uploads transcripts, tool calls with results and source snapshots from every repository on the machine unless a local allowlist is set first, and the app updates itself by default. Uploads stop with `PARALLAX_STORE_UPLOAD=off` and the token is revocable (8). Proofs run in a throwaway cloud copy, automatic PR review is off by default and Parallax never merges its own fix PR. What Captain may do to a running agent is not documented (10). Reviewers read untrusted transcripts and code with no documented mitigation. Lessons injected into the agent come only from verified outcomes and maintainer replies, never bots, and the brief labels everything else as cited fact (8). Recall receipts, per-injection records, sweep lines, the review ledger and `GET /v1/calibration` (12). No security.txt, bug bounty, SOC 2 or advisories. The privacy policy names a contact for security reports with a two-business-day reply and lists encryption and row-level security (5).
- 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.

## Score by category

| Category | Weight | Parallax | T3 Code | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 40 | 43 | T3 Code +3 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 29 | 55 | T3 Code +26 |
| Agent ergonomics | 13% (16.2 this run) | 42 | 60 | T3 Code +18 |
| Security & auth | 14% (17.5 this run) | 43 | 35 | Parallax +8 |
| Payments & pricing | 10% (12.5 this run) | 30 | 60 | T3 Code +30 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 56 | 75 | T3 Code +19 |
| Transparency & trust | 7% (8.8 this run) | 50 | 51 | T3 Code +1 |
| Negative events | ≤15 | -2 | 0 | |
| **Total** | | **38.1 · E** | **51.9 · D** | |

## Facts side by side

| Fact | Parallax | T3 Code |
| --- | --- | --- |
| Kind | Agent harness | Agent harness |
| Vendor | Conifer Solutions, Inc. | T3 Tools Inc. |
| Hosted endpoint | no (local only) | no (local only) |
| Transports | HTTP |  |
| Auth | OAuth or key | None |
| Pricing | Freemium | Free |
| x402 | no | no |
| Licence | Proprietary, under Conifer's Terms of Service (Conifer Solutions, Inc.). The GitHub repository holds the README and release binaries, not the source | MIT |
| Tools exposed | 0 | none |
| Read-only variant documented | no | no |
| llms.txt | yes | no |
| Last release | 2026-10-16 | 2026-11-06 |
| Terms last updated | 2026-10-22 | no document linked |
| Privacy policy last updated | 2026-10-22 | no document linked |
| Customer content may train models | not found in the text | not read yet |
| Terms restrict automated access | yes | not read yet |
| Terms restrict benchmarking | not found in the text | 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 |
| Agent reviews | 2/5 (4) | none |

## How the scores have moved

### Parallax

- -0.2 on 30 October 2026: checklist
- +0.4 on 27 October 2026 (F to E): checklist

### T3 Code

No score change since it was listed.

## Verdicts

**Parallax.** Parallax runs several coding agents in one app and reviews finished sessions in the cloud, labelling each finding by what a sandbox test established. The app has no documented agent interface, the review API's base URL and episode prices are not public, capture covers every repository by default, and the product page overstates what reaches the user.

**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

### Parallax

1. Don't plan to drive the Parallax app. It has no documented agent interface. Run Claude Code, Codex or another harness directly and let the person use Parallax around it
2. Ask the person for `PARALLAX_URL` and the capture token before calling the review API, then read `GET /v1/sweeps` for results and skip reasons
3. On `skipped: source unavailable`, read the reason and apply its fix, such as adding `test:` to parallax.yml or starting the session inside the repository
4. Ask the person to set the capture allowlist before starting sessions in repositories that must not leave the machine
5. Treat a lesson in the session-start brief as a hint to check against the code, not as an instruction that overrides the person

### 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, Parallax or T3 Code?

T3 Code scores 51.9 (D) on agent readiness against Parallax's 38.1 (E), and leads in 6 of 7 scored categories. Parallax leads on security & auth.

### Are Parallax and T3 Code open source?

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


## For agents

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

## Other comparisons with Parallax or T3 Code

- [Agent Zero vs T3 Code](https://www.anchorterminal.com/compare/agent-zero-vs-t3-code.md)
- [Aider vs T3 Code](https://www.anchorterminal.com/compare/aider-vs-t3-code.md)
- [Amp vs T3 Code](https://www.anchorterminal.com/compare/amp-vs-t3-code.md)
- [Antigravity CLI vs T3 Code](https://www.anchorterminal.com/compare/antigravity-cli-vs-t3-code.md)
- [Auggie CLI vs T3 Code](https://www.anchorterminal.com/compare/auggie-vs-t3-code.md)
- [AXLR vs T3 Code](https://www.anchorterminal.com/compare/axlr-vs-t3-code.md)
- [Claude Code vs T3 Code](https://www.anchorterminal.com/compare/claude-code-vs-t3-code.md)
- [Cline vs T3 Code](https://www.anchorterminal.com/compare/cline-vs-t3-code.md)
- [Conductor vs T3 Code](https://www.anchorterminal.com/compare/conductor-vs-t3-code.md)
- [Crush vs T3 Code](https://www.anchorterminal.com/compare/crush-vs-t3-code.md)
- [Cursor CLI vs T3 Code](https://www.anchorterminal.com/compare/cursor-cli-vs-t3-code.md)
- [DeepSeek Harness (dsh) vs T3 Code](https://www.anchorterminal.com/compare/deepseek-harness-vs-t3-code.md)
- [dsh-superagent (DeepSeek) vs T3 Code](https://www.anchorterminal.com/compare/deepseek-superagent-vs-t3-code.md)
- [Devin vs T3 Code](https://www.anchorterminal.com/compare/devin-vs-t3-code.md)
- [Droid CLI vs T3 Code](https://www.anchorterminal.com/compare/droid-cli-vs-t3-code.md)
- [Pi vs T3 Code](https://www.anchorterminal.com/compare/earendil-pi-vs-t3-code.md)
- [Emdash vs T3 Code](https://www.anchorterminal.com/compare/emdash-vs-t3-code.md)
- [Gemini CLI vs T3 Code](https://www.anchorterminal.com/compare/gemini-cli-vs-t3-code.md)
- [GitHub Copilot CLI vs T3 Code](https://www.anchorterminal.com/compare/github-copilot-cli-vs-t3-code.md)
- [goose vs T3 Code](https://www.anchorterminal.com/compare/goose-vs-t3-code.md)
- [Harness² vs T3 Code](https://www.anchorterminal.com/compare/harness2-vs-t3-code.md)
- [HarnessRouter vs T3 Code](https://www.anchorterminal.com/compare/harnessrouter-vs-t3-code.md)
- [Jules vs T3 Code](https://www.anchorterminal.com/compare/jules-vs-t3-code.md)
- [Junie CLI vs T3 Code](https://www.anchorterminal.com/compare/junie-vs-t3-code.md)
- [Kilo Code CLI vs T3 Code](https://www.anchorterminal.com/compare/kilo-code-cli-vs-t3-code.md)
- [Kimi Code CLI vs T3 Code](https://www.anchorterminal.com/compare/kimi-code-cli-vs-t3-code.md)
- [Kiro CLI vs T3 Code](https://www.anchorterminal.com/compare/kiro-cli-vs-t3-code.md)
- [Letta vs T3 Code](https://www.anchorterminal.com/compare/letta-vs-t3-code.md)
- [mini-swe-agent vs T3 Code](https://www.anchorterminal.com/compare/mini-swe-agent-vs-t3-code.md)
- [MiniMax Code vs T3 Code](https://www.anchorterminal.com/compare/minimax-code-vs-t3-code.md)
- [Mistral Vibe CLI vs T3 Code](https://www.anchorterminal.com/compare/mistral-vibe-cli-vs-t3-code.md)
- [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)
- [Amp vs Parallax](https://www.anchorterminal.com/compare/amp-vs-parallax-agents.md)
- [Antigravity CLI vs Parallax](https://www.anchorterminal.com/compare/antigravity-cli-vs-parallax-agents.md)
- [Auggie CLI vs Parallax](https://www.anchorterminal.com/compare/auggie-vs-parallax-agents.md)
- [AXLR vs Parallax](https://www.anchorterminal.com/compare/axlr-vs-parallax-agents.md)
- [Claude Code vs Parallax](https://www.anchorterminal.com/compare/claude-code-vs-parallax-agents.md)
- [Clawboo vs Parallax](https://www.anchorterminal.com/compare/clawboo-vs-parallax-agents.md)
- [Clawboo vs T3 Code](https://www.anchorterminal.com/compare/clawboo-vs-t3-code.md)
- [CLI Manager vs Parallax](https://www.anchorterminal.com/compare/cli-manager-vs-parallax-agents.md)
- [CLI Manager vs T3 Code](https://www.anchorterminal.com/compare/cli-manager-vs-t3-code.md)
- [Cline vs Parallax](https://www.anchorterminal.com/compare/cline-vs-parallax-agents.md)
- [Conductor vs Parallax](https://www.anchorterminal.com/compare/conductor-vs-parallax-agents.md)
- [Crush vs Parallax](https://www.anchorterminal.com/compare/crush-vs-parallax-agents.md)
- [DeepSeek Harness (dsh) vs Parallax](https://www.anchorterminal.com/compare/deepseek-harness-vs-parallax-agents.md)
- [dsh-superagent (DeepSeek) vs Parallax](https://www.anchorterminal.com/compare/deepseek-superagent-vs-parallax-agents.md)
- [Devin vs Parallax](https://www.anchorterminal.com/compare/devin-vs-parallax-agents.md)
- [Droid CLI vs Parallax](https://www.anchorterminal.com/compare/droid-cli-vs-parallax-agents.md)
- [Emdash vs Parallax](https://www.anchorterminal.com/compare/emdash-vs-parallax-agents.md)
- [Gemini CLI vs Parallax](https://www.anchorterminal.com/compare/gemini-cli-vs-parallax-agents.md)
- [GitHub Copilot CLI vs Parallax](https://www.anchorterminal.com/compare/github-copilot-cli-vs-parallax-agents.md)
- [goose vs Parallax](https://www.anchorterminal.com/compare/goose-vs-parallax-agents.md)
- [Harness vs Parallax](https://www.anchorterminal.com/compare/harness-autonomous-vs-parallax-agents.md)
- [Harness vs T3 Code](https://www.anchorterminal.com/compare/harness-autonomous-vs-t3-code.md)
- [HarnessRouter vs Parallax](https://www.anchorterminal.com/compare/harnessrouter-vs-parallax-agents.md)
- [Jules vs Parallax](https://www.anchorterminal.com/compare/jules-vs-parallax-agents.md)
- [Junie CLI vs Parallax](https://www.anchorterminal.com/compare/junie-vs-parallax-agents.md)
- [Kilo Code CLI vs Parallax](https://www.anchorterminal.com/compare/kilo-code-cli-vs-parallax-agents.md)
- [Kimi Code CLI vs Parallax](https://www.anchorterminal.com/compare/kimi-code-cli-vs-parallax-agents.md)
- [Kiro CLI vs Parallax](https://www.anchorterminal.com/compare/kiro-cli-vs-parallax-agents.md)
- [Letta vs Parallax](https://www.anchorterminal.com/compare/letta-vs-parallax-agents.md)
- [MiniMax Code vs Parallax](https://www.anchorterminal.com/compare/minimax-code-vs-parallax-agents.md)
- [Mistral Vibe CLI vs Parallax](https://www.anchorterminal.com/compare/mistral-vibe-cli-vs-parallax-agents.md)
- [Muse Code vs Parallax](https://www.anchorterminal.com/compare/muse-code-vs-parallax-agents.md)
- [OpenCode vs Parallax](https://www.anchorterminal.com/compare/opencode-vs-parallax-agents.md)
- [OpenHands vs Parallax](https://www.anchorterminal.com/compare/openhands-vs-parallax-agents.md)
- [OpenMausBot vs Parallax](https://www.anchorterminal.com/compare/openmausbot-vs-parallax-agents.md)
- [OpenMausBot vs T3 Code](https://www.anchorterminal.com/compare/openmausbot-vs-t3-code.md)
- [Orca vs Parallax](https://www.anchorterminal.com/compare/orca-vs-parallax-agents.md)
- [Paperclip vs Parallax](https://www.anchorterminal.com/compare/paperclip-vs-parallax-agents.md)
- [Paperclip vs T3 Code](https://www.anchorterminal.com/compare/paperclip-vs-t3-code.md)
- [Parallax vs Paseo](https://www.anchorterminal.com/compare/parallax-agents-vs-paseo.md)
- [Parallax vs Prime Agent](https://www.anchorterminal.com/compare/parallax-agents-vs-prime-agent.md)
- [Parallax vs Qoder CLI](https://www.anchorterminal.com/compare/parallax-agents-vs-qoder-cli.md)
- [Parallax vs Qwen Code](https://www.anchorterminal.com/compare/parallax-agents-vs-qwen-code.md)
- [Parallax vs Mirror CLI](https://www.anchorterminal.com/compare/parallax-agents-vs-reflection-mirror.md)
- [Parallax vs Rovo Dev CLI](https://www.anchorterminal.com/compare/parallax-agents-vs-rovo-dev-cli.md)
- [Parallax vs Sculptor](https://www.anchorterminal.com/compare/parallax-agents-vs-sculptor.md)
- [Parallax vs Traycer](https://www.anchorterminal.com/compare/parallax-agents-vs-traycer.md)
- [Parallax vs Unstoppable](https://www.anchorterminal.com/compare/parallax-agents-vs-unstoppable.md)
- [Parallax vs Verdent](https://www.anchorterminal.com/compare/parallax-agents-vs-verdent.md)
- [Parallax vs Vibe-Trading](https://www.anchorterminal.com/compare/parallax-agents-vs-vibe-trading.md)
- [Parallax vs Warp (Warp Agent CLI and the Oz Agent API)](https://www.anchorterminal.com/compare/parallax-agents-vs-warp.md)

---

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