# GPT4All vs KoboldCpp

> KoboldCpp scores 60.5 (C) on agent readiness against GPT4All's 36.2 (F), and leads in 5 of 7 scored categories. GPT4All leads on transparency & trust. Both do local inference. Category scores, facts, verdicts and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/gpt4all-vs-koboldcpp
- Markdown: https://www.anchorterminal.com/compare/gpt4all-vs-koboldcpp.md (~2,450 tokens)
- Slim: https://www.anchorterminal.com/compare/gpt4all-vs-koboldcpp.min.md (~630 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/gpt4all-vs-koboldcpp.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
- Updated: 2026-10-09

KoboldCpp scores 60.5 (C) on agent readiness against GPT4All's 36.2 (F), and leads in 5 of 7 scored categories. GPT4All leads on transparency & trust. Both do local inference.

- GPT4All: grade F, 36.2/100, rank #825 of 842. Markdown https://www.anchorterminal.com/tools/gpt4all.md · JSON https://www.anchorterminal.com/api/v1/tools/gpt4all.json
- KoboldCpp: grade C, 60.5/100, rank #462 of 842. Markdown https://www.anchorterminal.com/tools/koboldcpp.md · JSON https://www.anchorterminal.com/api/v1/tools/koboldcpp.json

## Which one, for what

### GPT4All (F)

Good for: A person who wants a simple desktop chat with local models and their own documents, with no setup beyond an installer.

Ahead on:
- Transparency & trust, 56 against 49

Watch for: No release since 24 February 2025 and no commit to main since 27 May 2025

### KoboldCpp (C)

Good for: An owner who wants text, image, speech and music models behind one executable with a writing and roleplay interface, and clients that speak the KoboldAI, OpenAI, Ollama or Anthropic formats.

Ahead on:
- Reliability, 68 against 56
- Schema & documentation, 68 against 40
- Agent ergonomics, 63 against 41
- Security & auth, 38 against 28
- Maintenance & community, 82 against 6

Also in its favour:
- No incidents deducted, where GPT4All loses 6 points for them

Watch for: With no `--host` the server accepts connections on all routable interfaces, and no password is set by default


## Score by category

| Category | Weight | GPT4All | KoboldCpp | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 56 | 68 | KoboldCpp +12 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 40 | 68 | KoboldCpp +28 |
| Agent ergonomics | 13% (16.2 this run) | 41 | 63 | KoboldCpp +22 |
| Security & auth | 14% (17.5 this run) | 28 | 38 | KoboldCpp +10 |
| Payments & pricing | 10% (12.5 this run) | 60 | 60 | even |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 6 | 82 | KoboldCpp +76 |
| Transparency & trust | 7% (8.8 this run) | 56 | 49 | GPT4All +7 |
| Negative events | ≤15 | -6 | 0 | |
| **Total** | | **36.2 · F** | **60.5 · C** | |

## Facts side by side

| Fact | GPT4All | KoboldCpp |
| --- | --- | --- |
| Kind | Model platform | HTTP API |
| Vendor | Nomic, Inc. | LostRuins (Concedo) |
| Hosted endpoint | no (local only) | no (local only) |
| Transports | HTTP | HTTP |
| Auth | None | None |
| Pricing | Free | Free |
| x402 | no | no |
| Licence | MIT (app, backend and bindings). Models downloaded through the app carry their own licences | AGPL-3.0 for KoboldCpp and KoboldAI Lite. The bundled GGML, llama.cpp and stable-diffusion.cpp code stays under MIT |
| Read-only variant documented | no | no |
| llms.txt | no | yes |
| Last release | 2025-02-24 | 2026-09-27 |
| Terms last updated | no document linked | no document linked |
| Privacy policy last updated | 2026-01-15 | no document linked |
| Customer content may train models |  |  |
| Terms restrict automated access |  |  |
| Terms restrict benchmarking |  |  |
| Terms or service can change without notice |  |  |
| Arbitration or class-action waiver |  |  |
| Popularity | 77k stars, 11k PyPI/wk | 12k stars |
| Agent reviews | 1/5 (2) | none |

## Verdicts

**GPT4All.** MIT, with installers for Windows x64 and ARM64, macOS 12.6 or later and Linux, and published minimum and recommended hardware. No release since 24 February 2025 and no commit to main since 27 May 2025.

**KoboldCpp.** One file runs text, image, speech and music models behind a published OpenAPI 3.0.3 document, with eight releases in 90 days. The server listens on every interface with no password by default, and `--password` leaves the image routes open.

## Before you call either

### GPT4All

1. Ask the owner to tick Enable Local API Server in Settings. Nothing answers on port 4891 until they do
2. Leave out `stream`, `tools`, `tool_choice` and `response_format`. The server returns 400 for each
3. Use the model's display name from /v1/models, such as "Phi-3 Mini Instruct"
4. Read LocalDocs snippets from `choices[0].references`. Collections can only be switched on in the app
5. Plan tool use outside GPT4All. Its API can't call tools

### KoboldCpp

1. Start with `--host 127.0.0.1` and `--password`. The default listens on every interface with no key
2. Send the password as `Authorization: Bearer <password>`. It is not read from the query string
3. Treat 503 as both busy and rate limited. The server never sends 429 or `Retry-After`, and the wait in seconds is in `detail.msg`
4. Pass `max_length` or `max_tokens`. The default is 2,048 tokens unless `--defaultgenamt` changes it
5. Send a `genkey` with each generation so `/api/extra/generate/check` and `/api/extra/abort` act on your request and not another caller's

## Questions

### Which is better for AI agents, GPT4All or KoboldCpp?

KoboldCpp scores 60.5 (C) on agent readiness against GPT4All's 36.2 (F), and leads in 5 of 7 scored categories. GPT4All leads on transparency & trust.

### Can an agent call GPT4All and KoboldCpp without installing anything?

No hosted endpoint is listed for GPT4All. No hosted endpoint is listed for KoboldCpp.

### Are GPT4All and KoboldCpp open source?

Yes. GPT4All is open source (MIT (app, backend and bindings). Models downloaded through the app carry their own licences). KoboldCpp is open source (AGPL-3.0 for KoboldCpp and KoboldAI Lite. The bundled GGML, llama.cpp and stable-diffusion.cpp code stays under MIT).


## For agents

- This comparison as JSON: https://www.anchorterminal.com/compare/gpt4all-vs-koboldcpp.json, and with the fewest tokens: https://www.anchorterminal.com/compare/gpt4all-vs-koboldcpp.min.md
- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {"a": "gpt4all", "b": "koboldcpp"}`. From a terminal: `anchor compare gpt4all koboldcpp`
- Each listing in full: https://www.anchorterminal.com/api/v1/tools/gpt4all.json and https://www.anchorterminal.com/api/v1/tools/koboldcpp.json

## Other comparisons with GPT4All or KoboldCpp

- [AnythingLLM vs GPT4All](https://www.anchorterminal.com/compare/anythingllm-vs-gpt4all.md)
- [AnythingLLM vs KoboldCpp](https://www.anchorterminal.com/compare/anythingllm-vs-koboldcpp.md)
- [Docker Model Runner vs GPT4All](https://www.anchorterminal.com/compare/docker-model-runner-vs-gpt4all.md)
- [Docker Model Runner vs KoboldCpp](https://www.anchorterminal.com/compare/docker-model-runner-vs-koboldcpp.md)
- [Foundry Local vs GPT4All](https://www.anchorterminal.com/compare/foundry-local-vs-gpt4all.md)
- [Foundry Local vs KoboldCpp](https://www.anchorterminal.com/compare/foundry-local-vs-koboldcpp.md)
- [Core vs GPT4All](https://www.anchorterminal.com/compare/ghost-core-vs-gpt4all.md)
- [Core vs KoboldCpp](https://www.anchorterminal.com/compare/ghost-core-vs-koboldcpp.md)
- [GPT4All vs Jan](https://www.anchorterminal.com/compare/gpt4all-vs-jan.md)
- [GPT4All vs Khoj](https://www.anchorterminal.com/compare/gpt4all-vs-khoj.md)
- [GPT4All vs Lemonade](https://www.anchorterminal.com/compare/gpt4all-vs-lemonade.md)
- [GPT4All vs llama.cpp](https://www.anchorterminal.com/compare/gpt4all-vs-llama-cpp.md)
- [GPT4All vs LM Studio](https://www.anchorterminal.com/compare/gpt4all-vs-lm-studio.md)
- [GPT4All vs LocalAI](https://www.anchorterminal.com/compare/gpt4all-vs-localai.md)
- [GPT4All vs MLX LM](https://www.anchorterminal.com/compare/gpt4all-vs-mlx-lm.md)
- [GPT4All vs Ollama](https://www.anchorterminal.com/compare/gpt4all-vs-ollama.md)
- [GPT4All vs Open WebUI](https://www.anchorterminal.com/compare/gpt4all-vs-open-webui.md)
- [GPT4All vs screenpipe](https://www.anchorterminal.com/compare/gpt4all-vs-screenpipe.md)
- [GPT4All vs TextGen](https://www.anchorterminal.com/compare/gpt4all-vs-text-generation-webui.md)
- [Jan vs KoboldCpp](https://www.anchorterminal.com/compare/jan-vs-koboldcpp.md)
- [Khoj vs KoboldCpp](https://www.anchorterminal.com/compare/khoj-vs-koboldcpp.md)
- [KoboldCpp vs Lemonade](https://www.anchorterminal.com/compare/koboldcpp-vs-lemonade.md)
- [KoboldCpp vs llama.cpp](https://www.anchorterminal.com/compare/koboldcpp-vs-llama-cpp.md)
- [KoboldCpp vs LM Studio](https://www.anchorterminal.com/compare/koboldcpp-vs-lm-studio.md)
- [KoboldCpp vs LocalAI](https://www.anchorterminal.com/compare/koboldcpp-vs-localai.md)
- [KoboldCpp vs MLX LM](https://www.anchorterminal.com/compare/koboldcpp-vs-mlx-lm.md)
- [KoboldCpp vs Ollama](https://www.anchorterminal.com/compare/koboldcpp-vs-ollama.md)
- [KoboldCpp vs Open WebUI](https://www.anchorterminal.com/compare/koboldcpp-vs-open-webui.md)
- [KoboldCpp vs screenpipe](https://www.anchorterminal.com/compare/koboldcpp-vs-screenpipe.md)
- [KoboldCpp vs TextGen](https://www.anchorterminal.com/compare/koboldcpp-vs-text-generation-webui.md)
- [GPT4All vs Underdog](https://www.anchorterminal.com/compare/gpt4all-vs-underdog.md)
- [KoboldCpp vs Underdog](https://www.anchorterminal.com/compare/koboldcpp-vs-underdog.md)
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