vioscaleAI
Comparison

Keywords AI vs PromptLayer

No clear leader: PromptLayer (63.3) and Keywords AI (62.4) 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.

Keywords AI full profile →PromptLayer full profile →
Machine formatsMarkdownJSONGraphQLMarkdown is open. JSON and GraphQL need a free key.
Keywords AI62
PromptLayer63
Score
vioscaleAI score
Keywords AI62 / 100medium · 68%
PromptLayer63 / 100medium · 72%
Pricing
Free tier
Keywords AI✓
PromptLayer✓
Model
Keywords AIfreemium
PromptLayerfreemium
Price level
Keywords AIhigh
PromptLayermid
Starting price
Keywords AI$199
PromptLayer$49
Transparent
Keywords AI✓
PromptLayer✓
Integrations
Count
Keywords AI2
PromptLayer5
Security
Gdpr
Keywords AI✓
PromptLayer✓
Hipaa
Keywords AI✓
PromptLayer✓
Iso27001
Keywords AI✓
PromptLayer–
Soc2
Keywords AI✓
PromptLayer✓
Reliability
Sla pct
Keywords AI99.9
PromptLayer–
Market
Availability
Content
Faq
Keywords AI7 items
PromptLayer7 items

Capabilities

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

Capabilities
Openai compatible API
Keywords AI✓
PromptLayer✓
Automatic failover
Keywords AI✓
PromptLayer✓
Routing strategy
Keywords AICustom
PromptLayer-
Caching
Keywords AIExact
PromptLayerExact
Virtual key management
Keywords AI✓
PromptLayer-
Budget spend controls
Keywords AI✓
PromptLayer-
Rate limiting
Keywords AI✓
PromptLayer✓
Guardrails moderation
Keywords AI-
PromptLayer-
Request cost observability
Keywords AI✓
PromptLayer✓
Streaming support
Keywords AI-
PromptLayer✓
Deployment model
Keywords AIManaged SaaS
PromptLayerManaged SaaS
Open source
Keywords AI-
PromptLayer✓
Pricing model
Keywords AIUsage based saas
PromptLayerusage/seat-based-saas

What each one is

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

Keywords AI

Provides tools for monitoring language model performance, managing prompts, and evaluating language model outputs for engineering teams

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.

Keywords AI

from $199/moHybridFree tier

Free tier available. Team plan $199/month. Usage add-ons from $1/1k scores and $8/100k logs. Enterprise on request.

  • FreeFree
    • Full platform
    • 2 evaluators
    • 5 prompts
    • Log management
    • Community Discord
  • Team$199/month
    • Everything in Free
    • Unlimited datasets
    • Unlimited evaluators
    • Unlimited prompts
    • Private Slack channel
    • +2 more
  • EnterpriseContact sales
    • Custom packages
    • Volume discount
    • Custom SLAs
    • Dedicated support engineer
    • HIPAA BAA
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
Keywords AI✓
PromptLayer✓
CLI
Keywords AI✓
PromptLayer✗
Deployment
Cloud / SaaS
Keywords AI✓
PromptLayer✓
Self-hosted
Keywords AI✓
PromptLayer✗

Integrations

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

In common (1)
  • OpenTelemetry

Keywords AI

4 total - 3 not shared
  • PostHog
  • Vercel AI
  • n8n
Independently observed

PromptLayer

9 total - 8 not shared
  • Pydantic AI
  • OpenAI
  • Anthropic
  • Google GenAI
  • AWS Bedrock
  • Azure OpenAI
  • Vertex AI
  • Gemini API
Independently observed
Still deciding?

Keywords AI 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.