vioscale
Comparison

ChainForge vs PromptLayer

On the evidence we track, PromptLayer leads this comparison with a composite score of 70/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.

ChainForge full profile →PromptLayer full profile →
Machine formatsJSONMarkdownGraphQLor send Accept: application/json
ChainForge37
★PromptLayer70
Score
Vioscale score
ChainForge37 / 100low · 32%
PromptLayer70 / 100medium · 54%
Pricing
Free tier
ChainForge✓
PromptLayer✓
Model
ChainForgeopen_source
PromptLayerfreemium
Price level
ChainForgefree
PromptLayermid
Starting price
ChainForge–
PromptLayer$49
Transparent
ChainForge✓
PromptLayer✓
Integrations
Count
ChainForge5
PromptLayer7
Security
Gdpr
ChainForge–
PromptLayer✓
Hipaa
ChainForge–
PromptLayer✓
Soc2
ChainForge–
PromptLayer✓
Vulnerabilities
Adoption
Dependent repos
ChainForge0
PromptLayer–
Github stars
ChainForge3,027
PromptLayer–
Activity
Commits last 30d
ChainForge0
PromptLayer–
Release
Cadence days
ChainForge24
PromptLayer–
History
ChainForge20 items
PromptLayer–
License
Spdx
ChainForgeMIT
PromptLayer–
Language
Primary
ChainForgeTypeScript
PromptLayer–
Market
Availability

Capabilities

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

Capabilities
Versioning model
ChainForge-
PromptLayerGit native
Diff and rollback
ChainForge-
PromptLayer✓
Deploy without redeploy
ChainForge-
PromptLayer✓
Non engineer editing
ChainForge✓
PromptLayer✓
Multi model playground
ChainForge✓
PromptLayer✓
Ab testing
ChainForge✓
PromptLayer✓
LLM judge or human eval
ChainForge✓
PromptLayer✓
Multi step flows
ChainForge✓
PromptLayer✓
Approval workflow
ChainForge-
PromptLayer✓
Tracing included
ChainForge-
PromptLayer✓
Self hostable
ChainForge✓
PromptLayer✓
Deployment model
ChainForgeSelf hosted
PromptLayerManaged SaaS
Pricing model
ChainForgeOpen source self host
PromptLayerUsage/seat based saas

What each one is

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

ChainForge

An open-source platform that enables users to experiment with multiple language models, compare outputs across different prompts and settings, and evaluate LLM quality without requiring extensive coding knowledge.

Independently observed

PromptLayer

Leader

A platform combining prompt versioning, evaluation tools, and observability for LLM applications. It enables domain experts to test and refine prompts, track API usage and costs, and monitor application performance—all without changing application code.

Independently observed

Pricing

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

ChainForge

Open sourceFree tier

Open source and free to use

as of verify ↗

PromptLayer

Leader
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
ChainForge✓
PromptLayer✓
CLI
ChainForge✗
PromptLayer✓
Deployment
Cloud / SaaS
ChainForge✓
PromptLayer✓
Self-hosted
ChainForge✓
PromptLayer✓
On-premise
ChainForge✗
PromptLayer✓
Hybrid
ChainForge✗
PromptLayer✓

Integrations

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

In common (1)
  • OpenAI

ChainForge

5 total - 4 not shared
  • Google Gemini
  • Alpaca
  • Llama
  • Dalai
Independently observed

PromptLayer

Leader
8 total - 7 not shared
  • Pydantic AI
  • Anthropic
  • Google GenAI
  • AWS Bedrock
  • OpenTelemetry
  • Azure OpenAI
  • Vertex AI
Independently observed

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