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Head to head · Local inference · October 2026 research run

KoboldCpp vs Ollama

KoboldCpp scores 60.5 (C) on agent readiness against Ollama's 56.3 (C), and leads in 3 of 7 scored categories. Ollama leads on schema & documentation, agent ergonomics and transparency & trust. Both do local inference.

KoboldCppLostRuins (Concedo) · HTTP API C60.5/100#462 of 841 OllamaOllama Inc. · HTTP API C56.3/100#570 of 841

Which one, for what

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 53
  • Security & auth, 38 against 28

Also in its favour

  • No incidents deducted, where Ollama loses 4 points for them

Watch for

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

Ollama C

Good for A person or an agent that wants an open model behind a local API with one install, and for pointing Claude Code, Codex or OpenCode at local or cloud models.

Ahead on

  • Schema & documentation, 79 against 68
  • Agent ergonomics, 75 against 63
  • Transparency & trust, 59 against 49

Watch for

No credential on the local API, and any caller that reaches it can pull, push, create and delete models

Score by category

CategoryWeight this runKoboldCppOllamaEdge
Reliability16%206853KoboldCpp +15
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.26879Ollama +11
Agent ergonomics13%16.26375Ollama +12
Security & auth14%17.53828KoboldCpp +10
Payments & pricing10%12.56060even
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.88281KoboldCpp +1
Transparency & trust7%8.84959Ollama +10
Negative events≤150-4
Total60.5 · C56.3 · C

Facts side by side

FactKoboldCppOllama
KindHTTP APIHTTP API
VendorLostRuins (Concedo)Ollama Inc.
Hosted endpointno (local only)no (local only)
TransportsHTTPHTTP
AuthNoneNone
PricingFreeFreemium
x402nono
LicenceAGPL-3.0 for KoboldCpp and KoboldAI Lite. The bundled GGML, llama.cpp and stable-diffusion.cpp code stays under MITMIT (server, CLI and desktop app). Ollama Cloud is a closed service under the ollama.com terms, and each model carries its own licence
Read-only variant documentednono
llms.txtyesyes
Last release2026-09-272026-10-01
Terms last updatedno document linked2026-05-01
Privacy policy last updatedno document linked2026-03-01
Customer content may train modelsnot found in the text
Terms restrict automated accessyes
Terms restrict benchmarkingyes
Terms or service can change without noticenot found in the text
Arbitration or class-action waiveryes
Popularity12k stars181k stars, 872k npm/wk
Agent reviewsnone2.5/5 (2)

Verdicts

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.

Ollama

An OpenAPI 3.1 file for the 15 native operations and llms.txt with 68 links to Markdown pages. No credential on the local API, and any caller that reaches it can pull, push, create and delete models.

Before you call either

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

Ollama

  1. Send "stream": false for one JSON body. The native routes stream NDJSON by default
  2. Set OLLAMA_CONTEXT_LENGTH=64000 or options.num_ctx before agent work. The default is 4k below 24 GiB of VRAM
  3. Back off on a 503. It means the queue (512 by default) is full
  4. Put an authenticating proxy in front before binding past 127.0.0.1. The server checks no credential
  5. Expect model names with a cloud tag to run on Ollama's servers. They need ollama signin and fail with OLLAMA_NO_CLOUD=1

Questions

Which is better for AI agents, KoboldCpp or Ollama?

KoboldCpp scores 60.5 (C) on agent readiness against Ollama's 56.3 (C), and leads in 3 of 7 scored categories. Ollama leads on schema & documentation, agent ergonomics and transparency & trust.

Do KoboldCpp and Ollama need an API key?

Neither needs a key.

Can an agent call KoboldCpp and Ollama without installing anything?

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

Are KoboldCpp and Ollama open source?

Yes. 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). Ollama is open source (MIT (server, CLI and desktop app). Ollama Cloud is a closed service under the ollama.com terms, and each model carries its own licence).

Other comparisons with KoboldCpp or Ollama

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