agentgateway
★ 5.5k
vs
llmkit
★ 15
agentgateway vs llmkit
agentgateway: Agentgateway is an open-source proxy offering a complete connectivity solution for Agentic AI, built on AI-native protocols like MCP and A2A. It provides security, observability, and governance for agent-to-LLM, agent-to-tool, and agent-to-agent communication across various frameworks.; llmkit: LLMKit is an open-source AI gateway and SDK suite designed to measure the costs of your AI agents and prevent requests from exceeding predefined budgets. It provides cost attribution, budget admission, and request evidence, ensuring efficient and controlled AI expenditure.
01
TL;DR
agentgatewayObservability · ★ 5.5k
When to choose:
- You want one proxy for LLM calls (OpenAI-compatible API with spend controls, failover and load balancing), MCP tools and A2A traffic.
- You need guardrails from several sources: regex, OpenAI moderation, AWS Bedrock Guardrails, Google Model Armor or webhooks.
- You need security and observability built in: JWT, API keys, OAuth, RBAC with a CEL policy engine, rate limiting, TLS and OpenTelemetry.
When to skip:
- You only need to bridge one MCP transport: a small proxy is simpler.
- You want the inference-routing features without Kubernetes: the README ties them to Kubernetes Inference Gateway extensions.
- You want detailed setup instructions in the README: it is short and points to the documentation site.
llmkitObservability · ★ 15
Local cost monitoring for existing Python/TypeScript AI SDK calls
02
Side-by-Side Comparison
Field
agentgatewayllmkitCategory
Observability
Observability
Stars
★ 5.5k
★ 15
License
Apache-2.0
MIT
Install Command
curl -sL https://agentgateway.dev/install.sh | bash -s -- --install-path /usr/local/bin
pip install llmkit-sdk
Updated
1d ago
1d ago
Open Source
Yes
Yes
Tags
AI Gateway, Multi-Agent Communication, LLM Proxy
AI Gateway, Cost Management, Budget Control
03
Features
agentgateway01LLM Gateway: Route traffic to major LLM providers through a unified OpenAI-compatible API with budget controls, load balancing, and failover.
02MCP Gateway: Connect LLMs to tools and external data sources via MCP with OpenAPI integration and OAuth authentication.
03A2A Gateway: Enable secure agent-to-agent communication using A2A, with capability discovery, modality negotiation, and task collaboration.
04Guardrails: Multi-layered content filtering with regex, OpenAI moderation, AWS Bedrock Guardrails, Google Model Armor, and custom webhooks.
05Security & Observability: Provide authentication (JWT, API keys, OAuth), fine-grained RBAC, rate limiting, TLS, and OpenTelemetry metrics/logs/tracing.
llmkit01Cost Attribution and Estimation
02Budget Admission and Enforcement
03Request Evidence and Analytics
04Multi-Language SDK and CLI Support
04
Use Cases
agentgateway↳Managing and routing traffic to multiple LLM providers with a unified API and cost controls.
↳Enabling secure and standardized communication between AI agents and external tools/data sources.
↳Facilitating collaborative task execution among multiple AI agents across different environments.
↳Implementing intelligent inference routing for self-hosted models based on resource utilization.
↳Applying multi-layered content filtering and moderation for AI interactions to ensure safety and compliance.
llmkit↳Local cost monitoring for existing Python/TypeScript AI SDK calls
↳Zero-code CLI tracking for quick cost summaries
↳Managing shared budgets and provider routing for multiple AI applications
↳Inspecting session data within MCP clients for cost and budget insights
05
Best For
agentgatewayEssentialTrending
llmkit—
FAQ
FAQ
What is the difference between agentgateway and llmkit?
Both agentgateway and llmkit are in the Observability category. agentgateway has 5.5k stars, while llmkit has 15 stars.
Which is better, agentgateway or llmkit?
The best choice depends on your use case. Choose agentgateway if Managing and routing traffic to multiple LLM providers with a unified API and cost controls., and llmkit if Local cost monitoring for existing Python/TypeScript AI SDK calls.
Is agentgateway free or open source?
Yes, agentgateway is open source on GitHub (Apache-2.0).
Is llmkit free or open source?
Yes, llmkit is open source on GitHub (MIT).
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