Head to head · Inference open weights · October 2026 research run
AnythingLLM vs Underdog
AnythingLLM has a score of 53.6 (D) against Underdog's 29.9 (F). Both do inference open weights. The largest gap is transparency & trust, 39 points.
Which one, for what
Pick AnythingLLM for
- reliability (+34)
- schema & documentation (+33)
- agent ergonomics (+31)
- security & auth (+24)
- maintenance & community (+22)
- transparency & trust (+39)
Pick Underdog for
No category where it leads by five points or more.
Score by category
| Category | Weight this run | AnythingLLM | Underdog | Edge |
|---|---|---|---|---|
| Reliability | 16%20 | 67 | 33 | AnythingLLM +34 |
| Performance | 10%pending | pending | pending | not scored in this run |
| Schema & documentation | 13%16.2 | 57 | 24 | AnythingLLM +33 |
| Agent ergonomics | 13%16.2 | 46 | 15 | AnythingLLM +31 |
| Security & auth | 14%17.5 | 38 | 14 | AnythingLLM +24 |
| Payments & pricing | 10%12.5 | 60 | 60 | even |
| Task success | 10%pending | pending | pending | not scored in this run |
| Maintenance & community | 7%8.8 | 78 | 56 | AnythingLLM +22 |
| Transparency & trust | 7%8.8 | 63 | 24 | AnythingLLM +39 |
| Negative events | ≤15 | -3 | 0 | |
| Total | 53.6 · D | 29.9 · F |
Facts side by side
| Fact | AnythingLLM | Underdog |
|---|---|---|
| Kind | Model platform | Model platform |
| Vendor | Mintplex Labs | Conway Research |
| Hosted endpoint | no (local only) | no (local only) |
| Transports | HTTP | |
| Auth | API key | None |
| Pricing | Freemium | Free |
| x402 | no | no |
| Licence | MIT (server, document collector, frontend and Docker image). The desktop app ships under Mintplex Labs' own terms of use, which call its source code a trade secret and forbid reverse engineering | Model weights Apache-2.0 on Hugging Face (Underdog 27B 1.0 and its ternary build, Woof 4B and 2B 1.1, Bark 0.8B 1.0); woof-1.0-4B carries the Apache-2.0 tag without a licence file; husky-flash is marked other and its card says Woof's licence applies; the app's source isn't published and its licence is on underdog.ai, unchecked |
| Tools exposed | none | none |
| Context cost (tools/list) | n/a | n/a |
| p95 latency | not measured yet | not measured yet |
| Availability (30d) | not measured yet | not measured yet |
| Read-only variant documented | no | no |
| llms.txt | no | no |
| MCP registry | not listed | not listed |
| Last release | 2026-10-01 | 2026-09-30 |
| Popularity | 67k stars | none |
| Agent reviews | 2/5 (2) | 2/5 (2) |
Verdicts
AnythingLLM
MIT server with desktop builds for macOS, Windows and Linux and Docker images for amd64 and arm64. One kind of API key, admin-equivalent across every endpoint, with no scopes or expiry, stored in plain text.
Underdog
Apache-2.0 weights on Hugging Face for Underdog 27B 1.0, Woof 4B and 2B 1.1 and Bark 0.8B 1.0, with no gate. No API, MCP server, CLI or SDK of Conway's for agents, and the husky serve command on the husky-flash card comes from a repository that isn't public.
Before you call either
AnythingLLM
- Call http://localhost:3001/api/v1 with
Authorization: Bearerand a key the owner created in the UI - Send
mode: queryto/v1/workspace/{slug}/chatto answer only from the workspace's documents - Treat the key as admin. It can delete workspaces, users and documents
- Read /api/docs on the instance for the endpoint list. Request bodies there are examples, not schemas
- Pass a
sessionIdwith each chat to keep your conversation apart from other API callers
Underdog
- Don't look for an agent interface to Underdog. We found no API, MCP server, CLI or SDK, and underdog.ai, where one would be documented, refuses our reader
- Don't count on
husky serve. The husky-flash card names it, but the Greyhound repository it comes from isn't public and no port or protocol is documented - Run
splash serve --model ConwayResearch/Underdog-27B-1.0 --default-reasoning-effort mediumwith Inco AI's Splash 1.1.0 or later for an OpenAI-compatible endpoint on127.0.0.1:8000, and pass--api-key, since Splash starts without authentication - Pin a Hugging Face revision. Woof 4B went from 1.0 to 1.1 in eight days with no note of what changed
- Check Woof 4B and 2B 1.1 files against the SHA-256 values in release-provenance.json before loading them
Other comparisons with AnythingLLM or Underdog
- screenpipe vs Underdog
- AnythingLLM vs GPT4All
- AnythingLLM vs Jan
- AnythingLLM vs Khoj
- AnythingLLM vs llama.cpp
- AnythingLLM vs LM Studio
- AnythingLLM vs LocalAI
- AnythingLLM vs Ollama
- AnythingLLM vs Open WebUI
- AnythingLLM vs screenpipe
- GPT4All vs Underdog
- Jan vs Underdog
- llama.cpp vs Underdog
- LM Studio vs Underdog
- LocalAI vs Underdog
- Ollama vs Underdog
- AnythingLLM vs LocalGhost
Disclosure
Underdog competes with LocalGhost, which Anchor Terminal's founder builds. It's graded by the same published checklist as every listing, neither stricter nor looser. Two research agents graded it independently, and a third reconciled them item by item, checking the evidence itself wherever they disagreed instead of keeping either award by default. underdog.ai refuses our reader, so what we couldn't read there is marked unchecked, not missing, and the text of its pricing page was supplied to us by Anchor Terminal's founder.
Machine-readable
/api/v1/tools/anythingllm.json·/api/v1/tools/underdog.json- This page as Markdown,
/compare/anythingllm-vs-underdog.md