vioscaleAI
Comparison

Not Diamond vs PromptLayer

No clear leader: PromptLayer (63.3) and Not Diamond (62.1) are within the 5-point margin; treat as a tie. The attribute-by-attribute breakdown below, with a source and date on every value, is the honest way to compare them.

Not Diamond full profile →PromptLayer full profile →
Machine formatsMarkdownJSONGraphQLMarkdown is open. JSON and GraphQL need a free key.
Not Diamond62
PromptLayer63
Score
vioscaleAI score
Not Diamond62 / 100medium · 60%
PromptLayer63 / 100medium · 72%
Pricing
Free tier
Not Diamond–
PromptLayer✓
Model
Not Diamondcommercial
PromptLayerfreemium
Price level
Not Diamondlow
PromptLayermid
Starting price
Not Diamond$0.05
PromptLayer$49
Transparent
Not Diamond✓
PromptLayer✓
Integrations
Count
Not Diamond–
PromptLayer5
Security
Certifications
Not DiamondSOC 2, ISO 27001
PromptLayer–
Gdpr
Not Diamond–
PromptLayer✓
Hipaa
Not Diamond–
PromptLayer✓
Iso27001
Not Diamond✓
PromptLayer–
Soc2
Not Diamond✓
PromptLayer✓
Market
Availability
Content
Faq
Not Diamond–
PromptLayer7 items

Capabilities

Feature-by-feature on the axes that matter for llm gateways. “-” means undocumented, not absent.

Capabilities
Openai compatible API
Not Diamond-
PromptLayer✓
Automatic failover
Not Diamond-
PromptLayer✓
Routing strategy
Not DiamondCustom
PromptLayer-
Caching
Not Diamond-
PromptLayerExact
Virtual key management
Not Diamond-
PromptLayer-
Budget spend controls
Not Diamond-
PromptLayer-
Rate limiting
Not Diamond-
PromptLayer✓
Guardrails moderation
Not Diamond-
PromptLayer-
Request cost observability
Not Diamond✓
PromptLayer✓
Streaming support
Not Diamond-
PromptLayer✓
Deployment model
Not DiamondManaged SaaS
PromptLayerManaged SaaS
Open source
Not Diamond-
PromptLayer✓
Pricing model
Not DiamondUsage based saas
PromptLayerusage/seat-based-saas

What each one is

The product in its own terms, so the numbers below have context.

Not Diamond

A model routing service for coding agents that uses machine learning to predict and recommend the most cost-effective and accurate AI model for each request. Engineering teams typically achieve 20-40% cost savings without quality degradation through continuous learning from real usage patterns.

Independently observed

PromptLayer

A platform that maintains logs of prompts and API requests, enabling debugging and replay of previous completions. Provides version tracking, testing, and monitoring with integrated tracing and evaluation features.

Independently observed

Pricing

List pricing as published by each vendor, with the date we read it. Always verify at the source before you buy.

Not Diamond

from $0.05/million tokensUsage-based

$0.05 per million tokens; enterprise plans available

  • Pay-as-you-go$0.05 per million tokens routed
    • Multi-harness support
    • Multi-provider support
    • Savings and usage dashboard
    • Continuous learning from harness usage
  • EnterpriseContact sales
    • Volume-based discounts
    • Organization-wide analytics
    • Advanced security and admin controls
    • SSO with SAML
    • Privacy-preserving deployment
as of verify ↗

PromptLayer

from $49/moHybridFree tier

Free tier available. Pro starts at $49/month, Team at $500/month, both with usage-based billing ($0.002–$0.003 per transaction). Enterprise custom pricing.

  • FreeFree
    • 5 Users
    • 2.5k/month Requests
    • 1 Workspace
    • 250/month Eval Cell Executions
    • 10MB max per Dataset
    • +1 more
  • Pro$49/month plus $0.003/transaction
    • Unlimited Playgrounds
    • Unlimited Workspaces
    • 150MB max per Dataset
    • Webhooks Included
    • Dedicated Support
  • Team$500/month plus $0.002/transaction
    • 25 Users
    • 100k+/month Requests
    • 7.5k+/month Eval Cell Executions
    • 1GB max per Dataset
    • Webhooks Included
    • +2 more
  • EnterpriseContact sales
    • Custom limits on everything
    • Role Based Access Controls
    • Deployment Approvals
    • HIPAA with BAA
    • Flexible Hosting Options
    • +2 more
as of verify ↗

Platform & deployment

Where each product runs and how it can be hosted. A dash means undocumented, not unsupported.

Platforms
Web
Not Diamond–
PromptLayer✓
Deployment
Cloud / SaaS
Not Diamond✓
PromptLayer✓

Integrations

What each product connects to. Counts come from the vendor's own integration directory where one exists.

Not Diamond

Not documented yet.

PromptLayer

9 total
  • Pydantic AI
  • OpenAI
  • Anthropic
  • Google GenAI
  • AWS Bedrock
  • OpenTelemetry
  • Azure OpenAI
  • Vertex AI
  • Gemini API
Independently observed
Still deciding?

Not Diamond or PromptLayer: which one depends on you

A composite score cannot know your constraints. Describe them and both get re-weighted against what you actually need, with the evidence behind every position.

Free to run, no account needed to start. How the evaluation works

Comparison generated from independently-sourced facts. Every value links to its source and retrieval date. See the method.