Can I use Weights & Biases and LightOn together?

Yes, many teams use both tools together for different purposes. Use the Stack Builder section above to combine Weights & Biases and LightOn with other tools and save your AI toolkit.

Does Weights & Biases or LightOn have a free plan?

Weights & Biases is available for free with a free trial. LightOn is a paid tool. Always verify current pricing directly with the vendor.

Weights & Biases vs LightOn

Comprehensive side-by-side comparison — features, pricing, performance, and more.

Updated May 2026

Weights & Biases

Accelerate AI development with experiment tracking, model management, and LLM observability.

0.0(0)

FREEMIUM

95% data quality

LightOn

Secure AI Search & Reasoning for Enterprise Data

0.0(0)

PAID

91% data quality

Trust & Reliability

Weights & Biases

Users:1M-10M

Customers (per vendor):Canva, Microsoft, Toyota +1

SOC 2

HIPAA

Too Close to Call

Weights & Biases (6.7) vs LightOn (6.7) — difference of 0.0 points

AI Comparison Summary

Weights & Biases

6.7

avg score

LightOn

6.7

avg score

Both tools score very similarly overall — the best choice depends on your specific priorities.

Based on 6 dimensions

How scores are calculated

Too close to call — it's a tie

Weights & Biases

Best For

Tracking and visualizing machine learning experiments

Optimizing hyperparameters for AI models

Managing and versioning AI models and datasets

Debugging and evaluating LLM applications

Not Ideal For

Non-technical users without ML development experience

Simple data visualization tasks not related to ML experiments

Users looking for a no-code AI development platform

LightOn

Best For

Implementing secure AI search on internal knowledge bases

Automating RFP responses with reliable content

Powering self-service customer support portals

Developing AI-powered internal assistants

Not Ideal For

Individuals or small teams seeking a free or low-cost AI search solution

Users who prefer fully managed SaaS solutions without data residency concerns

Organizations without significant internal IT resources for deployment and management

* Verdict is based on our algorithmic scoring of publicly available data. Learn about our methodology

Weights & Biases is best for

🎨Image & Design8.0📊Data & Analytics7.2💻Coding & Dev7.0

LightOn is best for

✍️Writing & Content9.0💬Chat & Conversation9.0

Filter by your use case:

Pros & Cons

Weights & Biases

Pros

Comprehensive platform for MLOps lifecycle, from experimentation to production monitoring
Supports a wide range of AI models and frameworks for training and inference
Offers specialized tools for LLM observability, including traces, evaluations, and guardrails
Provides flexible deployment options including cloud-hosted and self-hosted
Includes a free tier for personal development and academic research

Cons

Corporate use is not allowed on the free Personal self-hosted plan
Cloud storage and tracked hours are limited on free and lower-tier plans
Pricing for inference is usage-based and can vary
Requires Docker and Python for self-hosting
No explicit mention of a simple GUI for non-technical users

LightOn

Pros

Ensures zero data exfiltration with on-premise or sovereign cloud deployment
Handles massive, multimodal unstructured data including complex formats like images and diagrams
Supports advanced search behaviors like conversational Q&A and agentic reasoning
Mirrors native permissions (ACLs) for strict data governance and segregation
Offers both API for developers and ready-to-use white-label interface for business teams
GDPR compliant and SOC 2 Type 1 compliant

Cons

Requires significant hardware (GPU) investment for on-premise deployment
SOC 2 Type 1 is mentioned, not Type II certification
Deployment takes about three weeks, which might be long for some use cases
No explicit mention of a free tier or transparent pricing

Weighted Score — Adjust What Matters to You

Pick a profile or drag sliders — scores and radar update instantly on the right.

Quick profiles:

Ease of Use5

Output Quality5

Value for Money5

Customizability5

Support & Ecosystem5

Integration Power5

Dimension Comparison

Weights & Biases

6.7

/ 10

LightOn

6.7

/ 10

Dimension Breakdown

Ease of Use

How easy it is to get started and use daily

Weights & Biases

6.0

LightOn

6.0

Output Quality

Quality and accuracy of generated results

Weights & Biases

8.0

LightOn

8.0

Value for Money

Cost vs. features and output quality

Weights & Biases

7.0

LightOn

7.0

Customizability

Calculated

Ability to tailor to specific needs

Weights & Biases

6.0

LightOn

6.0

Support & Ecosystem

Documentation, community, and support quality

Weights & Biases

8.0▲ +1.0

LightOn

7.0

Integration Power

Calculated

Ability to connect with other tools and workflows

Weights & Biases

5.0

LightOn

6.0▲ +1.0

Calculated = derived from verified integration count and API/open-source signals. AI = LLM-assessed from public website content. Methodology

Data is sourced from public information and vendor websites. It may not always be up-to-date — verify pricing and features directly with the vendor before purchasing.Report inaccuracy

Frequently Asked Questions

Which is better, Weights & Biases or LightOn?

Both are strong options. Weights & Biases has a rating of 0.0/5 (0 reviews), while LightOn has a rating of 0.0/5 (0 reviews). The best choice depends on your specific use case, budget, and workflow requirements.

Is Weights & Biases cheaper than LightOn?

Weights & Biases starts at free (freemium model) with a free trial. LightOn starts at free (paid model). Use the Cost Calculator above for a detailed estimate.

What are the main differences between Weights & Biases and LightOn?

Weights & Biases — "Accelerate AI development with experiment tracking, model management, and LLM observability.". LightOn — "Secure AI Search & Reasoning for Enterprise Data". Key differences include their pricing models, platform support, integrations, and technical capabilities. See the Feature Comparison table above for a complete side-by-side breakdown.

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