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Ell Pricing

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

At a glance

100% free and open source under the Apache-2.0 license ($0 software cost). ell is an open-source prompt engineering and execution library with automatic versioning and local observability studio with zero licensing fees.

Self-hosting cost

Ell 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 BotPer cursor.com/pricing, Grok Bot is included on Cursor Premium ($30/month), Super ($100/month), Ultra ($200/month), Teams (from $30/user/month) and Enterprise (custom); it is not included on Free or Plus.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 Ell cost?

100% free and open source under the Apache-2.0 license ($0 software cost). ell is an open-source prompt engineering and execution library with automatic versioning and local observability studio with zero licensing fees.

Does Ell have a free plan?

Yes — Ell is open source and free to use.

Can you self-host Ell for free?

Ell 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 Ell 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.