--- title: "ai-gateway vs GPTRouter" type: "comparison" canonical_url: "https://www.graphcanon.com/compare/ferro-labs-ai-gateway-vs-writesonic-gptrouter" tools: ["ferro-labs-ai-gateway", "writesonic-gptrouter"] --- # ai-gateway vs GPTRouter *GraphCanon updated Aug 21, 2026* ## Verdict Pick ai-gateway if ai-gateway from Ferro Labs supports over 30 LLMs with integrated caching, guardrails, A/B testing, and cost controls, making it ideal for managing multiple language models in a production environment; pick GPTRouter if gPTRouter is notable for TypeScript and handles multiple LLMs and image models like OpenAI, Anthropic, Azure, Dall-E, SDXL with improved reliability and speed. [ai-gateway](https://docs.ferrolabs.ai) reports 219 GitHub stars, 33 forks, and 63 open issues, last pushed Aug 7, 2026. [GPTRouter](https://gpt-router.writesonic.com/) has 455 stars, 38 forks, and 10 open issues, last pushed Apr 10, 2024. Figures are from public GitHub metadata via [ai-gateway's repository](https://github.com/ferro-labs/ai-gateway) and [GPTRouter's repository](https://github.com/Writesonic/GPTRouter). | | [ai-gateway](/tools/ferro-labs-ai-gateway.md) | [GPTRouter](/tools/writesonic-gptrouter.md) | | --- | --- | --- | | Tagline | Unified AI Gateway for multiple LLMs with caching, guardrails, A/B testing, and cost controls | Manage multiple LLMs and image models for reliable and fast responses | | Stars | 219 | 455 | | Forks | 33 | 38 | | Open issues | 63 | 10 | | Language | Go | TypeScript | | Adopt for | ai-gateway from Ferro Labs supports over 30 LLMs with integrated caching, guardrails, A/B testing, and cost controls, making it ideal for managing multiple language models in a production environment. | GPTRouter is notable for TypeScript and handles multiple LLMs and image models like OpenAI, Anthropic, Azure, Dall-E, SDXL with improved reliability and speed. | | Persona | - | - | | Runtime | - | - | | License | Apache-2.0 - a permissive free software license | The MIT license applies to GPTRouter, offering permissive use with conditions only requiring preservation of copyright and license notices. | | Categories | Inference & Serving, Model Training | Inference & Serving, LLM Frameworks, Model Training | ## Trust and health _Sourced signals - not a safety guarantee. No winner column._ | | [ai-gateway](/tools/ferro-labs-ai-gateway.md) | [GPTRouter](/tools/writesonic-gptrouter.md) | | --- | --- | --- | | Maintenance | Very active (96%) | Dormant (18%) | | Days since push | 2d | 862d | | Open issues (now) | 63 | 10 | | Stars delta | Unknown | 0 (30d) | | Open issues delta | Unknown | 0 (30d) | | Full report | [trust report](/tools/ferro-labs-ai-gateway/trust.md) | [trust report](/tools/writesonic-gptrouter/trust.md) | ## Decision facts: ai-gateway - **Adopt for:** ai-gateway from Ferro Labs supports over 30 LLMs with integrated caching, guardrails, A/B testing, and cost controls, making it ideal for managing multiple language models in a production environment. - **License detail:** Apache-2.0 - a permissive free software license ## Decision facts: GPTRouter - **Pricing:** freemium - GPTRouter is open-source under the MIT License. However, costs might arise from using associated models like OpenAI or Anthropic. - **Requirements:** Min 2 GB RAM - **Adopt for:** GPTRouter is notable for TypeScript and handles multiple LLMs and image models like OpenAI, Anthropic, Azure, Dall-E, SDXL with improved reliability and speed. - **License detail:** The MIT license applies to GPTRouter, offering permissive use with conditions only requiring preservation of copyright and license notices. ## Choose when ### Choose ai-gateway if… - ai-gateway is primarily Go; GPTRouter is TypeScript. - License: ai-gateway is Apache-2.0, GPTRouter is MIT. - Tags unique to ai-gateway: ai-gateway, litellm, llm-cost, llm-proxy. - When you need to integrate more than 30 different LLM services including OpenAI and Anthropic ### Choose GPTRouter if… - GPTRouter is primarily TypeScript; ai-gateway is Go. - License: GPTRouter is MIT, ai-gateway is Apache-2.0. - Pricing: GPTRouter is open-source under the MIT License. However, costs might arise from using associated models like OpenAI or Anthropic.. - Requirements: Min 2 GB RAM. - Tags unique to GPTRouter: anthropic, azure-openai, cohere, google-gemini. - Also covers LLM Frameworks. - GPTRouter ships Docker support for self-hosted deployment. - When your project requires seamless integration of different language models such as OpenAI, Anthropic, and Azure and demands reliability and fast response times. ## When NOT to use ai-gateway - If your project only involves one or two LLMs which does not necessitate the gateway's broad compatibility features - For small-scale projects that do not require comprehensive cost analysis tools - When custom integration for specific guardrails is required, as ai-gateway offers generalized settings ## When NOT to use GPTRouter - Avoid using GPTRouter if your project strictly uses Python without the flexibility to adopt TypeScript, as it may hinder seamless integration. - If your application exclusively focuses on a single LLM or image model provider lacking the need for managing multiple providers, consider alternatives more focused in scope and potentially lighter. ## Common questions ### What is the difference between ai-gateway and GPTRouter? ai-gateway: Unified AI Gateway for multiple LLMs with caching, guardrails, A/B testing, and cost controls. GPTRouter: Manage multiple LLMs and image models for reliable and fast responses. See the comparison table for live GitHub stats and shared categories. ### When should I choose ai-gateway over GPTRouter? Choose ai-gateway over GPTRouter when ai-gateway is primarily Go; GPTRouter is TypeScript; License: ai-gateway is Apache-2.0, GPTRouter is MIT; Tags unique to ai-gateway: ai-gateway, litellm, llm-cost, llm-proxy; When you need to integrate more than 30 different LLM services including OpenAI and Anthropic. ### When should I choose GPTRouter over ai-gateway? Choose GPTRouter over ai-gateway when GPTRouter is primarily TypeScript; ai-gateway is Go; License: GPTRouter is MIT, ai-gateway is Apache-2.0; Pricing: GPTRouter is open-source under the MIT License. However, costs might arise from using associated models like OpenAI or Anthropic.; Requirements: Min 2 GB RAM; Tags unique to GPTRouter: anthropic, azure-openai, cohere, google-gemini; Also covers LLM Frameworks; GPTRouter ships Docker support for self-hosted deployment; When your project requires seamless integration of different language models such as OpenAI, Anthropic, and Azure and demands reliability and fast response times. ### When should I avoid ai-gateway? If your project only involves one or two LLMs which does not necessitate the gateway's broad compatibility features For small-scale projects that do not require comprehensive cost analysis tools When custom integration for specific guardrails is required, as ai-gateway offers generalized settings ### When should I avoid GPTRouter? Avoid using GPTRouter if your project strictly uses Python without the flexibility to adopt TypeScript, as it may hinder seamless integration. If your application exclusively focuses on a single LLM or image model provider lacking the need for managing multiple providers, consider alternatives more focused in scope and potentially lighter. ### Is ai-gateway or GPTRouter more popular on GitHub? GPTRouter has more GitHub stars (455 vs 219). Stars measure visibility, not whether either tool fits your constraints. ### Are ai-gateway and GPTRouter open source? Yes - both are open-source projects on GitHub (ai-gateway: Apache-2.0, GPTRouter: MIT). ### Where can I find alternatives to ai-gateway or GPTRouter? GraphCanon lists graph-backed alternatives at [ai-gateway alternatives](/tools/ferro-labs-ai-gateway/alternatives) and [GPTRouter alternatives](/tools/writesonic-gptrouter/alternatives) ([ai-gateway markdown twin](/tools/ferro-labs-ai-gateway/alternatives.md), [GPTRouter markdown twin](/tools/writesonic-gptrouter/alternatives.md)), ranked by typed relationship edges rather than popularity votes. ### Is there a machine-readable version of this comparison? Yes. The markdown twin at [this comparison](/compare/ferro-labs-ai-gateway-vs-writesonic-gptrouter.md) mirrors this page for agents and LLM crawlers, with the same stats table and FAQ answers. ### Which is better maintained, ai-gateway or GPTRouter? ai-gateway: Very active. GPTRouter: Dormant. Compare maintenance labels, days since push, and release cadence in the trust section below - stars alone do not measure maintenance. ### Where are the full trust reports for ai-gateway and GPTRouter? GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: [ai-gateway trust report](/tools/ferro-labs-ai-gateway/trust); [GPTRouter trust report](/tools/writesonic-gptrouter/trust). --- **Machine-readable endpoints** - JSON: [`/api/graphcanon/graph?tool=ferro-labs-ai-gateway`](/api/graphcanon/graph?tool=ferro-labs-ai-gateway) - LLM index: [/llms.txt](/llms.txt) - Full corpus: [/llms-full.txt](/llms-full.txt) _GraphCanon - The knowledge graph for AI development. https://www.graphcanon.com/_