vioscaleAI
Comparison

LiteLLM vs Not Diamond

No clear leader: Not Diamond (62.1) and LiteLLM (57.6) 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.

LiteLLM full profile →Not Diamond full profile →
Machine formatsMarkdownJSONGraphQLMarkdown is open. JSON and GraphQL need a free key.
LiteLLM58
Not Diamond62
Score
vioscaleAI score
LiteLLM58 / 100low · 35%
Not Diamond62 / 100medium · 60%
Pricing
Free tier
LiteLLM✓
Not Diamond–
Model
LiteLLMfreemium
Not Diamondcommercial
Price level
LiteLLMlow
Not Diamondlow
Starting price
LiteLLM–
Not Diamond$0.05
Transparent
LiteLLM✗
Not Diamond✓
Integrations
Count
LiteLLM140
Not Diamond–
Security
Certifications
LiteLLM–
Not DiamondSOC 2, ISO 27001
Iso27001
LiteLLM–
Not Diamond✓
Soc2
LiteLLM–
Not Diamond✓
Market
Availability
Content
Faq
LiteLLM5 items
Not Diamond–

Capabilities

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

Capabilities
Openai compatible API
LiteLLM✓
Not Diamond-
Automatic failover
LiteLLM✓
Not Diamond-
Routing strategy
LiteLLMCost based
Not DiamondCustom
Caching
LiteLLM-
Not Diamond-
Virtual key management
LiteLLM✓
Not Diamond-
Budget spend controls
LiteLLM✓
Not Diamond-
Rate limiting
LiteLLM✓
Not Diamond-
Guardrails moderation
LiteLLMBuilt in
Not Diamond-
Request cost observability
LiteLLM✓
Not Diamond✓
Streaming support
LiteLLM-
Not Diamond-
Deployment model
LiteLLMSelf hosted
Not DiamondManaged SaaS
Open source
LiteLLM✓
Not Diamond-
Pricing model
LiteLLMOpen source self host
Not DiamondUsage based saas

What each one is

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

LiteLLM

An open-source AI gateway that abstracts access to over 140 language model providers behind a single OpenAI-compatible API, enabling teams to implement spend tracking, request routing, and governance controls without changing application code.

Independently observed

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

Pricing

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

LiteLLM

HybridFree tier30-day trial

Free open-source self-hosted tier; Enterprise priced to scale

  • Open SourceFree
    • 100+ LLM providers, one OpenAI API
    • Virtual keys, users & teams
    • Spend tracking
    • Budgets + rate limits
    • LLM fallbacks
    • +3 more
  • EnterpriseContact sales
    • Everything in Open Source, plus:
    • SSO + SCIM
    • OIDC / JWT auth
    • Audit logs
    • Secret managers + key rotation
    • +5 more
as of verify ↗

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 ↗

Platform & deployment

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

Platforms
Web
LiteLLM✓
Not Diamond–
CLI
LiteLLM✓
Not Diamond–
Deployment
Cloud / SaaS
LiteLLM✓
Not Diamond✓
Self-hosted
LiteLLM✓
Not Diamond✗
On-premise
LiteLLM✓
Not Diamond✗
Air-gapped
LiteLLM✓
Not Diamond✗

Integrations

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

LiteLLM

36 total
  • OpenAI
  • Anthropic
  • Azure
  • AWS Bedrock
  • Cloudflare
  • Google VertexAI
  • Meta Llama
  • Mistral AI
  • NLP Cloud
  • OVHCloud
  • vLLM
  • Nvidia NIM
  • Slack
  • Discord
  • Microsoft Teams
  • PagerDuty
  • Prometheus
  • AWS Secrets Manager
  • Google Cloud Secret Manager
  • MCP servers
  • Gemini
  • Bedrock
  • VertexAI
  • Langfuse
  • +12 more
Independently observed

Not Diamond

Not documented yet.

Still deciding?

LiteLLM or Not Diamond: 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.