JugglervsLemma
Generated from the two spec rows. Green marks the better value where a spec has a clear direction. Everything else is just different.
Juggler
Juggler · Agent harness
OSSMCP
Panel
7.12 spec wins
- Reliability
- 6.7
- Usefulness
- 7.3
- Cost
- 8.3
- Longevity
- 6.2
“It restores your session on relaunch, including the approval dialog you were pointedly ignoring, which is a form of cruelty.”
Lemma
Lemma · Agent harness
OSS
Panel
6.81 spec wins
- Reliability
- 6.2
- Usefulness
- 6.8
- Cost
- 7.7
- Longevity
- 6.3
“You install the platform of the future with uv, which is at least honest about which decade the tooling comes from.”
Spec by spec
| Spec | Juggler | Lemma |
|---|---|---|
| Architecture | ||
| Category | Agent harness | Agent harness |
| Runs | local, cloud | local, cloud |
| Platforms | macos, linux, windows, web | macos, linux, windows, web |
| Context window | not documented | not documented |
| Protocols | ||
| MCP client | Yes | No |
| MCP server | No | No |
| Capabilities | ||
| Runs terminal commands | Yes | Yes |
| Multi-file edits | Yes | YesA pod is authored by the coding agent you already use, and pod runs dispatched through Agent Host let that agent change files; Lemma itself edits pod definitions. |
| Git operations | No | No |
| Browser control | No | No |
| Sandboxed execution | No | No |
| Multi-agent orchestration | YesSessions branch into nested sub-threads, and multiple clients can attach to the same server session at once. | Yes |
| Headless / CI mode | No | YesWorkflows are triggered by schedules, webhooks, table events, chat or the API, with optional human approval steps. |
| Models | ||
| Backbone | Claude Code (CLI or API), OpenAI (Codex plan or API), GitHub Copilot, Gemini, Mistral, Z.ai, Ollama, OpenRouter, DeepSeek | Claude Code, Codex, OpenCode, Cursor, any Anthropic-compatible endpoint, any OpenAI-compatible endpoint |
| Bring your own model | Yes | Yes |
| Local models | YesOllama is listed among the supported providers. | YesServer-run agents accept any Anthropic- or OpenAI-compatible endpoint, which covers a self-hosted gateway or a local model. |
| Cost | ||
| Pricing model | byok | byok |
| Starts at | $0/mo | $0/mo |
| Free tier | Yes | Yes |
| Bring your own key | Yes | Yes |
| Openness | ||
| Open source | Yes | Yes |
| License | AGPL-3.0 | AGPL-3.0 |
| GitHub stars | 604 | 475 |
Which one would each critic pick
| Critic | Juggler | Lemma | Pick |
|---|---|---|---|
| El Juez | — | — | not enough reviews |
| El Amigo | 7.5 | 6.8 | Juggler — Pick it when you want to see what the model is doing and change it mid-flight; pick a terminal agent if a scrollback has never actually bothered you. |
| El Crítico | 6.8 | 6.3 | Juggler — A session is a collaborative document and several clients can attach to one at once, and nothing documents what happens when two of them edit the context together. |
| El Profesor | 7.8 | 7.0 | Juggler — Context items, approvals, thread structure and the raw system prompt are laid out as inspectable columns, so the prompt is an object the user edits rather than an internal detail. |
| La Inversora | 6.5 | 6.3 | Juggler — 582 stars, no signup, no hosted tier and no revenue line: a good product with no mechanism by which anybody could pay for it, apparently on purpose. |
| La Jefa | 6.3 | 6.5 | Lemma — Work starts from a schedule, a webhook or a table event with approval steps in the middle, which is the first question procurement asks about automation. |
| El Hacker | 8.0 | 7.8 | Juggler — AGPL-3.0, and the extension points are JavaScript I can fork: context items, slash commands, even the loop strategies, with MCP servers and Ollama sitting alongside them. |
Picks are derived from each critic's own scores. Humans vote on matchups on the duels page.