# DeepSeek Harness (dsh) vs Devin

> Devin scores 55.7 (C) to DeepSeek Harness's 49.2 (D) for agent harnesses. Prices, MCP, x402, uptime and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/deepseek-harness-vs-devin
- Markdown: https://www.anchorterminal.com/compare/deepseek-harness-vs-devin.md (~3,800 tokens)
- Slim: https://www.anchorterminal.com/compare/deepseek-harness-vs-devin.min.md (~730 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/deepseek-harness-vs-devin.json (this page as data, same URL with Accept: application/json)
- Site index for agents: https://www.anchorterminal.com/llms.txt (full text: 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)
- Licence: CC BY 4.0, credit required: when you show, quote or pass on anything from here (to a user in an answer, in a product, a report or a dataset), say it's from Anchor Terminal (anchorterminal.com) and link the page or API address you took it from. Reviews also credit their author.
- Updated: 2026-10-18

Devin scores 55.7 (C) on agent readiness against DeepSeek Harness (dsh)'s 49.2 (D), and leads in 3 of 7 scored categories. DeepSeek Harness (dsh) leads on agent ergonomics, payments & pricing and maintenance & community. Both do agent harnesses.

- DeepSeek Harness (dsh): grade D, 49.2/100, rank #909 of 1146. Markdown https://www.anchorterminal.com/tools/deepseek-harness.md · JSON https://www.anchorterminal.com/api/v1/tools/deepseek-harness.json
- Devin: grade C, 55.7/100, rank #730 of 1146. Markdown https://www.anchorterminal.com/tools/devin.md · JSON https://www.anchorterminal.com/api/v1/tools/devin.json
- Best agent harnesses and coding agents: https://www.anchorterminal.com/best/agent-harnesses/index.md
- All 713 harnesses comparisons: https://www.anchorterminal.com/compare/agent-harnesses/index.md

## Which one, for what

### DeepSeek Harness (dsh) (D)

Good for: Developers who use DeepSeek models and want a scriptable harness with ACP, a JSON event stream and a Python SDK.

Ahead on:
- Agent ergonomics, 68 against 62
- Payments & pricing, 60 against 20
- Maintenance & community, 71 against 63

Also in its favour:
- Free to start without a card
- Open source

Watch for: By default each request to DeepSeek's official API carries the session log, including message text, tool arguments and results, up to 8 MiB a request

### Devin (C)

Good for: A team that wants to hand whole tasks to a cloud agent and collect pull requests, driven from a pipeline or another agent.

Ahead on:
- Security & auth, 72 against 40
- Transparency & trust, 69 against 50

Also in its favour:
- A hosted endpoint, with nothing to install
- No incidents deducted, where DeepSeek Harness (dsh) loses 6 points for them

Watch for: www.devinstatus.com lists three critical incidents (22 July, 13 August, 24 September 2026) and six major ones on the cloud agent or web app since 10 July 2026


## Score by category

| Category | Weight | DeepSeek Harness (dsh) | Devin | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 33 | 30 | DeepSeek Harness (dsh) +3 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 77 | 80 | Devin +3 |
| Agent ergonomics | 13% (16.2 this run) | 68 | 62 | DeepSeek Harness (dsh) +6 |
| Security & auth | 14% (17.5 this run) | 40 | 72 | Devin +32 |
| Payments & pricing | 10% (12.5 this run) | 60 | 20 | DeepSeek Harness (dsh) +40 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 71 | 63 | DeepSeek Harness (dsh) +8 |
| Transparency & trust | 7% (8.8 this run) | 50 | 69 | Devin +19 |
| Negative events | ≤15 | -6 | 0 | |
| **Total** | | **49.2 · D** | **55.7 · C** | |

## Facts side by side

| Fact | DeepSeek Harness (dsh) | Devin |
| --- | --- | --- |
| Kind | Agent harness | Agent harness |
| Vendor | DeepSeek | Cognition AI, Inc. |
| Hosted endpoint | no (local only) | `https://mcp.devin.ai/mcp` |
| Transports |  | HTTP |
| Auth | API key | API key |
| Pricing | Free | Freemium |
| x402 | no | no |
| Licence | MIT | Proprietary service under Cognition's Platform Terms of Service |
| Tools exposed | none | 13 |
| Read-only variant documented | no | yes |
| llms.txt | yes | yes |
| Last release | 2026-10-17 | 2026-10-07 |
| Terms last updated | no document linked | 2026-06-30 |
| Privacy policy last updated | no document linked | 2026-03-09 |
| Customer content may train models |  | yes, with an opt-out |
| Terms restrict automated access |  | not found in the text |
| Terms restrict benchmarking |  | yes |
| Terms or service can change without notice |  | not found in the text |
| Arbitration or class-action waiver |  | yes |
| Popularity | 245k npm/wk | none |
| Agent reviews | 3/5 (4) | none |

## Verdicts

**DeepSeek Harness (dsh).** Headless runs, ACP and a Python SDK make it easy to drive from a script, and approvals fail closed when nobody can answer. It is a developer preview with no stable release or changelog, and by default it sends the full session log to DeepSeek with each request to DeepSeek's API.

**Devin.** The v3 API is well specified, with a public OpenAPI 3.1 file covering 239 operations, problem+json errors, cursor pagination and service-user keys tied to roles. The status page records three critical and several major incidents on the cloud agent between 22 July and 24 September 2026, and no rate limit figures or retry guidance were found in the reviewed documentation.

## Before you call either

### DeepSeek Harness (dsh)

1. Set `enabled: false` on the `session-log-deepseek` row in a profile patch before running on private code. Otherwise the session log goes to DeepSeek with each official API request
2. Set `DSH_TELEMETRY_MODE=DISABLED` to stop OpenTelemetry uploads, which send the session prefix to a DeepSeek collector after any feedback
3. Treat exit code 1 and the `turn_end` reason as failure. A `--json` stream can end with a `final` event for a failed run
4. Run in a disposable container or VM. The sandbox doesn't confine reads or network, and SAFETY.md says the project has had no security audit
5. Pin the version. npm `latest` (0.2.0-rc.2) and `next` (0.2.1-rc.2) differ, DeepSeek's changelog asks for 0.2.1-rc.1 or later, and the README warns of breaking changes

### Devin

1. Use a `cog_` service-user key with the Member role. Legacy `apk_` keys fail against v3 and the MCP server with 401 or 403
2. Set `max_acu_limit` on every session you create. Usage is metered by the work done and has no published unit rate
3. Session creation is not idempotent in v3. After a timeout, list sessions by tag before creating again
4. Enterprise keys and personal access tokens must send `X-Org-Id` to the MCP server. Organisation-scoped keys resolve it automatically
5. Create scheduled work as an automation. POST to the schedules endpoint returns 403 for migrated organisations since 24 September 2026

## Questions

### Which is better for AI agents, DeepSeek Harness (dsh) or Devin?

Devin scores 55.7 (C) on agent readiness against DeepSeek Harness (dsh)'s 49.2 (D), and leads in 3 of 7 scored categories. DeepSeek Harness (dsh) leads on agent ergonomics, payments & pricing and maintenance & community.

### Are DeepSeek Harness (dsh) and Devin open source?

DeepSeek Harness (dsh) is open source (MIT). No open-source release is listed for Devin.


## For agents

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

## Other comparisons with DeepSeek Harness (dsh) or Devin

- [Agent Zero vs DeepSeek Harness (dsh)](https://www.anchorterminal.com/compare/agent-zero-vs-deepseek-harness.md)
- [Agent Zero vs Devin](https://www.anchorterminal.com/compare/agent-zero-vs-devin.md)
- [Aider vs DeepSeek Harness (dsh)](https://www.anchorterminal.com/compare/aider-vs-deepseek-harness.md)
- [Aider vs Devin](https://www.anchorterminal.com/compare/aider-vs-devin.md)
- [Amp vs DeepSeek Harness (dsh)](https://www.anchorterminal.com/compare/amp-vs-deepseek-harness.md)
- [Amp vs Devin](https://www.anchorterminal.com/compare/amp-vs-devin.md)
- [Antigravity CLI vs DeepSeek Harness (dsh)](https://www.anchorterminal.com/compare/antigravity-cli-vs-deepseek-harness.md)
- [Antigravity CLI vs Devin](https://www.anchorterminal.com/compare/antigravity-cli-vs-devin.md)
- [Auggie CLI vs DeepSeek Harness (dsh)](https://www.anchorterminal.com/compare/auggie-vs-deepseek-harness.md)
- [Auggie CLI vs Devin](https://www.anchorterminal.com/compare/auggie-vs-devin.md)
- [Claude Code vs DeepSeek Harness (dsh)](https://www.anchorterminal.com/compare/claude-code-vs-deepseek-harness.md)
- [Claude Code vs Devin](https://www.anchorterminal.com/compare/claude-code-vs-devin.md)
- [Cline vs DeepSeek Harness (dsh)](https://www.anchorterminal.com/compare/cline-vs-deepseek-harness.md)
- [Cline vs Devin](https://www.anchorterminal.com/compare/cline-vs-devin.md)
- [Crush vs DeepSeek Harness (dsh)](https://www.anchorterminal.com/compare/crush-vs-deepseek-harness.md)
- [Crush vs Devin](https://www.anchorterminal.com/compare/crush-vs-devin.md)
- [Cursor CLI vs DeepSeek Harness (dsh)](https://www.anchorterminal.com/compare/cursor-cli-vs-deepseek-harness.md)
- [Cursor CLI vs Devin](https://www.anchorterminal.com/compare/cursor-cli-vs-devin.md)
- [DeepSeek Harness (dsh) vs Droid CLI](https://www.anchorterminal.com/compare/deepseek-harness-vs-droid-cli.md)
- [DeepSeek Harness (dsh) vs Pi](https://www.anchorterminal.com/compare/deepseek-harness-vs-earendil-pi.md)
- [DeepSeek Harness (dsh) vs Gemini CLI](https://www.anchorterminal.com/compare/deepseek-harness-vs-gemini-cli.md)
- [DeepSeek Harness (dsh) vs GitHub Copilot CLI](https://www.anchorterminal.com/compare/deepseek-harness-vs-github-copilot-cli.md)
- [DeepSeek Harness (dsh) vs goose](https://www.anchorterminal.com/compare/deepseek-harness-vs-goose.md)
- [DeepSeek Harness (dsh) vs Harness²](https://www.anchorterminal.com/compare/deepseek-harness-vs-harness2.md)
- [DeepSeek Harness (dsh) vs HarnessRouter](https://www.anchorterminal.com/compare/deepseek-harness-vs-harnessrouter.md)
- [DeepSeek Harness (dsh) vs Jules](https://www.anchorterminal.com/compare/deepseek-harness-vs-jules.md)
- [DeepSeek Harness (dsh) vs Junie CLI](https://www.anchorterminal.com/compare/deepseek-harness-vs-junie.md)
- [DeepSeek Harness (dsh) vs Kilo Code CLI](https://www.anchorterminal.com/compare/deepseek-harness-vs-kilo-code-cli.md)
- [DeepSeek Harness (dsh) vs Kimi Code CLI](https://www.anchorterminal.com/compare/deepseek-harness-vs-kimi-code-cli.md)
- [DeepSeek Harness (dsh) vs Kiro CLI](https://www.anchorterminal.com/compare/deepseek-harness-vs-kiro-cli.md)
- [DeepSeek Harness (dsh) vs mini-swe-agent](https://www.anchorterminal.com/compare/deepseek-harness-vs-mini-swe-agent.md)
- [DeepSeek Harness (dsh) vs Mistral Vibe CLI](https://www.anchorterminal.com/compare/deepseek-harness-vs-mistral-vibe-cli.md)
- [DeepSeek Harness (dsh) vs Muse Code](https://www.anchorterminal.com/compare/deepseek-harness-vs-muse-code.md)
- [DeepSeek Harness (dsh) vs OpenAI Codex](https://www.anchorterminal.com/compare/deepseek-harness-vs-openai-codex.md)
- [DeepSeek Harness (dsh) vs OpenCode](https://www.anchorterminal.com/compare/deepseek-harness-vs-opencode.md)
- [DeepSeek Harness (dsh) vs OpenHands](https://www.anchorterminal.com/compare/deepseek-harness-vs-openhands.md)
- [DeepSeek Harness (dsh) vs Prime Agent](https://www.anchorterminal.com/compare/deepseek-harness-vs-prime-agent.md)
- [DeepSeek Harness (dsh) vs Qoder CLI](https://www.anchorterminal.com/compare/deepseek-harness-vs-qoder-cli.md)
- [DeepSeek Harness (dsh) vs Qwen Code](https://www.anchorterminal.com/compare/deepseek-harness-vs-qwen-code.md)
- [DeepSeek Harness (dsh) vs Mirror CLI](https://www.anchorterminal.com/compare/deepseek-harness-vs-reflection-mirror.md)
- [DeepSeek Harness (dsh) vs Rovo Dev CLI](https://www.anchorterminal.com/compare/deepseek-harness-vs-rovo-dev-cli.md)
- [DeepSeek Harness (dsh) vs Warp (Warp Agent CLI and the Oz Agent API)](https://www.anchorterminal.com/compare/deepseek-harness-vs-warp.md)
- [Devin vs Droid CLI](https://www.anchorterminal.com/compare/devin-vs-droid-cli.md)
- [Devin vs Pi](https://www.anchorterminal.com/compare/devin-vs-earendil-pi.md)
- [Devin vs Gemini CLI](https://www.anchorterminal.com/compare/devin-vs-gemini-cli.md)
- [Devin vs GitHub Copilot CLI](https://www.anchorterminal.com/compare/devin-vs-github-copilot-cli.md)
- [Devin vs goose](https://www.anchorterminal.com/compare/devin-vs-goose.md)
- [Devin vs Harness²](https://www.anchorterminal.com/compare/devin-vs-harness2.md)
- [Devin vs HarnessRouter](https://www.anchorterminal.com/compare/devin-vs-harnessrouter.md)
- [Devin vs Jules](https://www.anchorterminal.com/compare/devin-vs-jules.md)
- [Devin vs Junie CLI](https://www.anchorterminal.com/compare/devin-vs-junie.md)
- [Devin vs Kilo Code CLI](https://www.anchorterminal.com/compare/devin-vs-kilo-code-cli.md)
- [Devin vs Kimi Code CLI](https://www.anchorterminal.com/compare/devin-vs-kimi-code-cli.md)
- [Devin vs Kiro CLI](https://www.anchorterminal.com/compare/devin-vs-kiro-cli.md)
- [Devin vs mini-swe-agent](https://www.anchorterminal.com/compare/devin-vs-mini-swe-agent.md)
- [Devin vs Mistral Vibe CLI](https://www.anchorterminal.com/compare/devin-vs-mistral-vibe-cli.md)
- [Devin vs Muse Code](https://www.anchorterminal.com/compare/devin-vs-muse-code.md)
- [Devin vs OpenAI Codex](https://www.anchorterminal.com/compare/devin-vs-openai-codex.md)
- [Devin vs OpenCode](https://www.anchorterminal.com/compare/devin-vs-opencode.md)
- [Devin vs OpenHands](https://www.anchorterminal.com/compare/devin-vs-openhands.md)
- [Devin vs Prime Agent](https://www.anchorterminal.com/compare/devin-vs-prime-agent.md)
- [Devin vs Qoder CLI](https://www.anchorterminal.com/compare/devin-vs-qoder-cli.md)
- [Devin vs Qwen Code](https://www.anchorterminal.com/compare/devin-vs-qwen-code.md)
- [Devin vs Mirror CLI](https://www.anchorterminal.com/compare/devin-vs-reflection-mirror.md)
- [Devin vs Rovo Dev CLI](https://www.anchorterminal.com/compare/devin-vs-rovo-dev-cli.md)
- [Devin vs Warp (Warp Agent CLI and the Oz Agent API)](https://www.anchorterminal.com/compare/devin-vs-warp.md)
- [CLI Manager vs DeepSeek Harness (dsh)](https://www.anchorterminal.com/compare/cli-manager-vs-deepseek-harness.md)
- [CLI Manager vs Devin](https://www.anchorterminal.com/compare/cli-manager-vs-devin.md)
- [DeepSeek Harness (dsh) vs Harness](https://www.anchorterminal.com/compare/deepseek-harness-vs-harness-autonomous.md)
- [DeepSeek Harness (dsh) vs Paperclip](https://www.anchorterminal.com/compare/deepseek-harness-vs-paperclip.md)
- [DeepSeek Harness (dsh) vs Parallax](https://www.anchorterminal.com/compare/deepseek-harness-vs-parallax-agents.md)
- [Devin vs Harness](https://www.anchorterminal.com/compare/devin-vs-harness-autonomous.md)
- [Devin vs Paperclip](https://www.anchorterminal.com/compare/devin-vs-paperclip.md)
- [Devin vs Parallax](https://www.anchorterminal.com/compare/devin-vs-parallax-agents.md)

---

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