variA/Bly

pricing

Pricing for AI teams shipping production AI.

The deterministic alternative to LLM-as-judge pricing. Context-aware evaluation, 40+ metrics, and production A/B testing — no judge-model surcharge, no token-cost surprises. Pay for what you use.

What teams use Variably for

Context-aware RAG evaluation with claim-level grounding
Hallucination detection and multi-turn interaction analysis
A/B test prompts, models, and retrieval on real traffic
Ship winners with statistical confidence
free

$0

forever free

Get started
1 experiment with 3 variants
  • 1 project
  • 3 variants max
  • 50 experiment evaluations/month
lite

$19

/month

Get started
500 SEUs/month (~250-500 evaluation runs)
  • 2 projects
  • 5 feature flags per project
  • Email support
Overage: $0.09/SEU (managed), $0.015/SEU (BYOK)
starter

$49

/month

Get started
1,000 SEUs/month (~500-1,000 evaluation runs)
  • 3 projects
  • 10 feature flags per project
  • Email support (24hr)
Overage: $0.08/SEU (managed), $0.015/SEU (BYOK)
popular
professional

$149

/month

Get started
2,500 SEUs/month (~1,000-2,500 evaluation runs)
  • 10 projects
  • 30 feature flags per project
  • Priority email support
Overage: $0.07/SEU (managed), $0.015/SEU (BYOK)
business

$249

/month

Get started
5,000 SEUs/month (~2,000-5,000 evaluation runs)
  • 25 projects
  • Unlimited feature flags
  • Email + Slack support
Overage: $0.06/SEU (managed), $0.015/SEU (BYOK)
enterprise

Custom

tailored to your needs

Contact sales
Custom experiment volumes
  • Unlimited projects
  • Custom SEU caps
  • SSO/SAML authentication
  • RBAC & audit logs
  • Dedicated support
Overage: Volume-based pricing
what is an seu?

Standard Evaluation Unit

SEU is our universal measure of platform usage. Each experiment evaluation consumes SEUs based on complexity. Most standard evaluation runs use 1-3 SEUs, making costs predictable.

Managed LLM

We handle all LLM API calls. SEU pricing covers model cost + platform.

  • No API key management
  • Included SEUs per tier
  • Overage at tier rates

BYOK (Bring Your Own Key)

Use your API keys. Pay LLM providers directly. Platform fee only.

  • Platform fee: $0.015/SEU
  • Use existing API contracts
  • Full control over LLM spend
typical experiment outcomes
-18%
cost per evaluation run
+0.22
quality delta per experiment
7 days
median time to winner
annual billing

Save with annual plans

Get 2 months free (~17% discount) with annual prepayment.

Lite
$190
/year
Save $38
Starter
$490
/year
Save $98
Professional
$1,490
/year
Save $298
Business
$2,490
/year
Save $498
faq

Frequently asked questions

What's included in the free tier?

The free tier includes 1 experiment with up to 3 variants and 50 evaluation runs per month. It's perfect for trying out the platform and running your first AI evaluation.

What is an SEU (Standard Evaluation Unit)?

SEU is our universal measure of platform usage. Each experiment evaluation consumes SEUs based on complexity. Most standard evaluation runs use 1-3 SEUs.

What's the difference between Managed LLM and BYOK?

Managed: We handle LLM API calls, SEU covers model + platform cost. BYOK: You use your own API keys, pay providers directly, platform fee is $0.015/SEU.

What happens if I exceed my SEU limit?

You'll receive alerts at 50%, 80%, and 100% usage. Beyond your included SEUs, overage rates apply automatically based on your tier.

Do you offer annual discounts?

Yes. Annual plans save ~17% (2 months free). Enterprise contracts are custom negotiated.

Ready to ship AI you can defend?

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1,000 free credits.