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Outlines Pricing

open sourceopen source · Apache-2.0last verified September 6, 2026official site ↗

At a glance

Open-source structured generation library for LLMs using regex, JSON schemas, and context-free grammars (Apache-2.0). 100% free with $0 software cost; guides token logits directly in inference engines like vLLM, llama.cpp, and Transformers to guarantee valid structured outputs with zero syntax errors.

Self-hosting cost

Outlines is open source under the Apache-2.0 license. Self-hosting does not add a software license fee, but you still pay for infrastructure, operations, and any external model or API usage.

Free & cheaper Agent Frameworks

same category, free plan or open-source license

Grok BotBeta access bundled with eligible SuperGrok Plus ($100/mo), Cursor Pro+ ($60/mo), or Cursor Teams ($40/seat/mo); custom pricing for enterprise deployments.Latitudeopen sourceLatitude is an open-source AI agent observability and evaluation platform under the MIT license. It offers a free self-hosted edition and a free cloud Starter tier (20,000 credits/mo), alongside a Pro plan at $99/month for growing teams and custom Enterprise pricing.Judgevalopen sourceJudgeval is an open-source Python SDK (Apache-2.0) for AI agent evaluation and tracing. Judgment Labs offers hosted enterprise agent behavior monitoring and evaluation platform access via custom quotes.Mem0open sourceOpen-source core (Apache-2.0) with $0 self-hosting. Mem0 Cloud Free includes 10k memories and 1k retrieval calls/month. Starter is $19/mo for 50k memories and 5k retrievals. Pro ($99-$249/mo) unlocks Graph Memory (Mem0ᵍ), memory consolidation, and 500k memories with 50k retrievals. Enterprise provides custom pricing for VPC/on-premise deployment, SOC 2/HIPAA compliance, SAML SSO, and 24/7 SLA.
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FAQ

How much does Outlines cost?

Open-source structured generation library for LLMs using regex, JSON schemas, and context-free grammars (Apache-2.0). 100% free with $0 software cost; guides token logits directly in inference engines like vLLM, llama.cpp, and Transformers to guarantee valid structured outputs with zero syntax errors.

Does Outlines have a free plan?

Yes — Outlines is open source and free to use.

Can you self-host Outlines for free?

Outlines is open source under the Apache-2.0 license. Self-hosting does not add a software license fee, but you still pay for infrastructure, operations, and any external model or API usage.

What are free or cheaper Outlines alternatives?

Grok Bot, Latitude, Judgeval are in the same category with a free plan or open-source license.

pricing is editorial catalog data (last verified September 6, 2026) — vendors change plans; confirm on the official site before you buy. Reuse this data under CC-BY 4.0 via /data.