Alternatives

One API alternatives

On the evidence we track, the strongest alternative to One API is OpenRouter at 67/100. One API itself ranks #19 of 21 in llm gateways. Every product below is scored on the same independent signals, so the ranking is comparable rather than a matter of opinion.

Machine formatsMarkdownJSONGraphQLMarkdown is open. JSON and GraphQL need a free key.

Ranked alternatives to One API

  1. 167
    OpenRouter

    Universal API gateway for routing across hundreds of language models with automatic provider failover

    low · 34%
    vs One API →
  2. 266
    Unify

    AI agents that improve their performance through continuous learning from real-world production work

    medium · 73%
    vs One API →
  3. 365
    Cloudflare AI Gateway

    Route AI model requests through Cloudflare for monitoring, caching, cost control, and data protection

    low · 35%
    vs One API →
  4. 463
    TrueFoundry AI Gateway

    A unified AI gateway that connects multiple models with intelligent routing, cost controls, and built-in observability

    high · 76%
    vs One API →
  5. 562
    Keywords AI

    A comprehensive platform for engineering with large language models

    medium · 68%
    vs One API →
  6. 662
    Eden AI

    Unified API to access and route between hundreds of AI models from multiple providers

    medium · 60%
    vs One API →
  7. 762
    Not Diamond

    Intelligent model routing that automatically selects optimal AI models to reduce inference costs while maintaining quality

    medium · 60%
    vs One API →
  8. 859
    Envoy AI Gateway

    Unified API gateway for routing to multiple AI models without code changes

    medium · 54%
    vs One API →
  9. 958
    Higress

    Open-source gateway for unified management of AI applications, language models, and agent tools

    medium · 55%
    vs One API →
  10. 1058
    LiteLLM

    Unified API gateway providing centralized access and cost management across 100+ language model providers

    low · 35%
    vs One API →
  11. 1156
    TensorZero

    Open-source infrastructure for deploying and optimizing language models in production

    low · 48%
    vs One API →
  12. 1253
    Kong AI Gateway

    A gateway that routes application and agent requests to multiple language model providers with centralized governance, cost controls, and compliance enforcement

    low · 34%
    vs One API →
Still deciding?

Not sure which of these fits?

This ranking uses our balanced weighting. Say what actually matters to you (budget, compliance, self-hosting, team size) and the same llm gateways get reordered against that instead.

Free to run, no account needed to start. How the evaluation works

Why these ones

An alternative here means a product in the same category as One API (Llm Gateways), ranked by the vioscaleAI composite: a confidence-weighted blend of independent signals such as adoption, release activity, pricing transparency and security posture. There are no user reviews in it, and no vendor can pay to appear or to rank higher. Where we have not confirmed something, we show that rather than guessing.

Generated . See the method for how the composite is built, and why we are independent.