Comparison

Keywords AI vs TensorZero

On the evidence we track, Keywords AI leads this comparison with a composite score of 64/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.

Keywords AI full profile →TensorZero full profile →

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★Keywords AI64

TensorZero47

Attribute comparison across 2 tools
Attribute	Keywords AILeader	TensorZero
Vioscale score	64 / 100medium · 74%	47 / 100low · 21%
Pricing
Free tierpricing.free_tier	✓	✓
Modelpricing.model	freemium	open_source
Price levelpricing.price_level	high	free
Starting pricepricing.starting_price	$199	-
Transparentpricing.transparent	✓	-
Integrations
Countintegrations.count	4	3
Security
Gdprsecurity.gdpr	✓	-
Hipaasecurity.hipaa	✓	-
Iso27001security.iso27001	✓	-
Soc2security.soc2	✓	-
Vulnerabilitiessecurity.vulnerabilities	-	Count: 1 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=pypi&package_name=tensorzero&per_page=100 · Last 12m: 1 · Max severity: HIGH
Reliability
Sla pctreliability.sla_pct	99.9	-
Adoption
Dependent reposadoption.dependent_repos	-	0
Github starsadoption.github_stars	-	11,719
Release
Cadence daysrelease.cadence_days	-	6
Historyrelease.history	-	20 items
License
Spdxlicense.spdx	-	Apache-2.0
Language
Primarylanguage.primary	-	Rust
Market
Availabilitymarket.availability	Available worldwide · Popular in US	-

Score

Vioscale score

Keywords AI64 / 100medium · 74%

TensorZero47 / 100low · 21%

Pricing

Free tier

Keywords AI✓

TensorZero✓

Model

Keywords AIfreemium

TensorZeroopen_source

Price level

Keywords AIhigh

TensorZerofree

Starting price

Keywords AI$199

TensorZero–

Transparent

Keywords AI✓

TensorZero–

Integrations

Count

Keywords AI4

TensorZero3

Security

Gdpr

Keywords AI✓

TensorZero–

Hipaa

Keywords AI✓

TensorZero–

Iso27001

Keywords AI✓

TensorZero–

Soc2

Keywords AI✓

TensorZero–

Vulnerabilities

Keywords AI–

TensorZeroCount: 1 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=pypi&package_name=tensorzero&per_page=100 · Last 12m: 1 · Max severity: HIGH

Reliability

Sla pct

Keywords AI99.9

TensorZero–

Adoption

Dependent repos

Keywords AI–

TensorZero0

Github stars

Keywords AI–

TensorZero11,719

Release

Cadence days

Keywords AI–

TensorZero6

History

Keywords AI–

TensorZero20 items

License

Spdx

Keywords AI–

TensorZeroApache-2.0

Language

Primary

Keywords AI–

TensorZeroRust

Market

Availability

Keywords AIAvailable worldwide · Popular in US

TensorZero–

Capabilities

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

Capability comparison for Llm Gateways
Capability	Keywords AI	TensorZero
Capabilities
Openai compatible API	✓	✓
Automatic failover	✓	-
Routing strategy	Custom	-
Caching	Exact	-
Virtual key management	✓	✓
Budget spend controls	✓	-
Rate limiting	✓	-
Guardrails moderation	-	-
Request cost observability	✓	✓
Streaming support	-	-
Deployment model	Managed SaaS	Self hosted
Open source	-	✓
Pricing model	Usage based saas	Open source self host

Capabilities

Openai compatible API

Keywords AI✓

TensorZero✓

Automatic failover

Keywords AI✓

TensorZero-

Routing strategy

Keywords AICustom

TensorZero-

Caching

Keywords AIExact

TensorZero-

Virtual key management

Keywords AI✓

TensorZero✓

Budget spend controls

Keywords AI✓

TensorZero-

Rate limiting

Keywords AI✓

TensorZero-

Guardrails moderation

Keywords AI-

TensorZero-

Request cost observability

Keywords AI✓

TensorZero✓

Streaming support

Keywords AI-

TensorZero-

Deployment model

Keywords AIManaged SaaS

TensorZeroSelf hosted

Open source

Keywords AI-

TensorZero✓

Pricing model

Keywords AIUsage based saas

TensorZeroOpen source self host

What each one is

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

Keywords AI

Leader

An LLM engineering platform providing a single endpoint to reach 1000+ language models from all major providers, with built-in request caching, automatic fallback when services fail, real-time cost and usage observability, and granular budget and rate limiting controls per key or user.

Independently observed

TensorZero

A unified operations platform for LLM applications that provides infrastructure for routing API calls, tracking performance metrics, running experiments, and optimizing model and prompt configurations. Built as self-hosted open-source software designed for production-scale deployments.

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

Leader

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 2026-08-25verify ↗

TensorZero

Open sourceFree tier

as of 2026-08-21verify ↗

Platform & deployment

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

Platform and deployment support comparison
Supports	Keywords AI	TensorZero
WebPlatforms	✓	✓
CLIPlatforms	✓	✗
Cloud / SaaSDeployment	✓	✗
Self-hostedDeployment	✓	✓

Platforms

Web

Keywords AI✓

TensorZero✓

CLI

Keywords AI✓

TensorZero✗

Deployment

Cloud / SaaS

Keywords AI✓

TensorZero✗

Self-hosted

Keywords AI✓

TensorZero✓

Integrations

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

Keywords AI

Leader

4 total

PostHog
Vercel AI
n8n
OpenTelemetry

Independently observed

TensorZero

3 total

OpenAI
Ollama
Slack

Independently observed

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