Hosted routers and marketplaces - verified
Not Diamond
Not Diamond is a model routing service that says it is not a gateway, listed under hosted routers and marketplaces. Its first listed fee, in its own words: $0.05 per million tokens routed, pay-as-you-go routing fee. No compatible API format is stated in the pages we checked. Routing stated: automatic model routing. Read from the vendor's own pages on October 18, 2026.
Read from docs.notdiamond.ai, notdiamond.ai. Docs - Pricing - Compare every gateway
Status
- Not a gatewayNot Diamond
Not Diamond describes itself as a model router, not a gateway: it integrates with an existing gateway rather than replacing one.
“Not Diamond is not a gateway. Rather, we integrate with your existing gateway infrastructure.”
notdiamond.ai
- Status, as we read it
access by application (pay-as-you-go button reads "Apply for access")inferred
Our reading: The page implies this status without labelling it.
“Apply for access”
notdiamond.ai
How Not Diamond charges
Every fee line Not Diamond states, in its own words and units, with the quote. Nothing is converted.
| Product | Fee, in the vendor's words | Applies to | Quote and source |
|---|---|---|---|
| Not DiamondNot a gateway | $0.05 per million tokens routed | pay-as-you-go routing fee | “$0.05 per million tokens routed” |
| Volume-based discounts | Enterprise | “Volume-based discounts” |
Access and keys
- Free tier
- Not stated
Not stated on the pricing page.
- Bring your own key
- Not stated
Not applicable as stated (routes alongside your existing gateway); not stated.
- BYOK fee
- Not stated
Not stated.
- How it describes itself
model router, not a gateway; integrates with existing gateways
“Not Diamond is not a gateway. Rather, we integrate with your existing gateway infrastructure.”
notdiamond.ai
API formats
- OpenAI-compatible
- Not stated
Not stated in the checked pages (Python, TypeScript and REST API support stated).
- Anthropic-compatible
- Not stated
Not stated as an API format; the pricing FAQ says it works with Claude Code.
- OpenAI base URL
- Not stated
Not stated in the checked pages.
- Anthropic base URL
- Not stated
Not stated in the checked pages.
Routing
- Fallbacks
- Not stated
Not stated in the checked pages.
- Load balancing
- Not stated
Not stated in the checked pages.
- Automatic model routing
yes (per-prompt model recommendation; custom routers trainable)
“Intelligent model routing predicts which AI model to use for each prompt, maximizing accuracy while minimizing cost.”
notdiamond.ai
Caching
- Exact-match cache
- Not stated
Not stated in the checked pages.
- Semantic cache
- Not stated
Not stated in the checked pages.
Controls and observability
- Spend controls
- Not stated
Not stated in the checked pages.
- Rate limits
- Not stated
Not stated in the checked pages.
- Guardrails
- Not stated
Not stated in the checked pages.
- Observability
savings and usage dashboard
“Savings and usage dashboard”
notdiamond.ai - Telemetry and log export
- Not stated
Not stated in the checked pages.
Data, deployment and license
- Data logging and retention
privacy-preserving routing option (payload not seen)
“With privacy preserving routing enabled, Not Diamond bases routing decisions solely on derived request metadata and locally computed features, meaning we never see your payload, inputs, or outputs.”
notdiamond.ai - Regions
- Not stated
Not stated in the checked pages.
- Self-hosting
"Privacy-preserving deployment" listed for Enterpriseinferred
Our reading: Listed as privacy-preserving deployment on Enterprise. The page does not say it runs on your own infrastructure.
“Privacy-preserving deployment”
notdiamond.ai - License
- Not stated
Hosted proprietary service; no open-source license stated.
Vendor-stated counts
Model and provider counts as Not Diamond states them, dated. When two pages disagree, both are shown.
No vendor-stated model or provider count found on the checked pages.
Research notes
Not a gateway or marketplace by its own description; included as a routing product because the directory scope names it. Fee is per million tokens routed.
FAQ
How much does Not Diamond cost?
In Not Diamond's own terms: $0.05 per million tokens routed (pay-as-you-go routing fee); Volume-based discounts (Enterprise). As of October 18, 2026; fees are not converted.
Does Not Diamond support bring your own key?
Not stated. Not applicable as stated (routes alongside your existing gateway); not stated.
Is Not Diamond OpenAI-compatible or Anthropic-compatible?
OpenAI: not stated. Not stated in the checked pages (Python, TypeScript and REST API support stated). Anthropic: not stated. Not stated as an API format; the pricing FAQ says it works with Claude Code.
Sources
- Source: docs.notdiamond.ai/docs/what-is-not-diamond
- Source: notdiamond.ai/pricing
Last verified from each vendor's own docs, pricing pages, READMEs and license files; every quote was string-matched against the page that day. Fees are shown in the vendor's own words and change without notice, so check the linked source before you commit.
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