OpenRouter vs Portkey: LLM Gateways Comparison
Compare OpenRouter and Portkey side by side. Both are tools in the LLM Gateways category.
Updated April 29, 2026
The short answer
Choose OpenRouter if largest model catalog in the gateway space — 300+ models.
Choose Portkey if massive scale—10B requests monthly with 99.9999% uptime.
Want to compare OpenRouter and Portkey on your own traffic?
Respan lets you trace LLM and agent calls across any model or framework, A/B test prompts on production traffic, and route requests across 250+ models through one gateway. Free tier covers 10K traces per month. Setup in 5 minutes, no credit card.
Quick Comparison
| Category | LLM Gateways | LLM Gateways |
| Pricing | Free tier + pay-as-you-go (passthrough + 5.5% fee) | Freemium |
| Best For | Developers and teams who want one API for hundreds of LLMs without provider lock-in | Engineering teams who need a reliable, observable gateway for production LLM applications |
| Website | openrouter.ai | portkey.ai |
| Key Features |
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| Use Cases |
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Pros & Cons: OpenRouter vs Portkey
- +Largest model catalog in the gateway space — 300+ models
- +OpenAI-compatible API drops in with zero code change
- +Reasonable platform fee — 5.5% over passthrough rates
- +Per-key spend tracking and isolated rate limits
- +Active free tier viable for prototyping
- −Adds ~25-40ms latency over direct provider calls
- −Credits expire after 365 days
- −5.5% fee + $0.80 minimum charge stings on small purchases
- −Free models can be flaky — timeouts and required cooldowns
- +Massive scale—10B requests monthly with 99.9999% uptime
- +Comprehensive observability and analytics
- +Dedicated support even during POC phase
- +Strong security certifications (SOC2, ISO27001)
- −Real-world latency (20-40ms) higher than claimed
- −Benchmarks show competitors 228% faster
- −Complex feature set overwhelming for new users
- −High pricing for smaller teams
Pricing: OpenRouter vs Portkey
- · Access to 25+ free models
- · 50 requests/day (1,000 with $10+ credits)
- · 20 requests/minute
- · OpenAI-compatible API
- · 300+ models, 60+ providers
- · Passthrough provider rates + 5.5% credit-card fee
- · 5% fee on crypto purchases
- · Per-API-key spend tracking
- · Open-source gateway
- · Infrastructure costs only
- · Full control
- · Community support
- · Managed infrastructure
- · Standard support
- · Advanced observability
- · Prompt management
- · RBAC, SSO
- · Private cloud/VPC
- · Data isolation
- · SOC2, ISO27001
What people are saying
Curated quotes from Hacker News, Reddit, Product Hunt, and review blogs. Dates shown so you can judge whether early criticism still applies.
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“OpenRouter adds 5% on top of the model provider's base prices — for a single API across 300+ models that's a fair tax.”
— Reddit user, Reddit / Toksta summary · Feb 2026 - +
“The ability to track cost of each request and separate usages through different API keys is huge for indie devs running side projects.”
— Hacker News commenter, Hacker News · Apr 2026 - ·
“OpenRouter claims ~25ms added latency in ideal conditions, with ~40ms typical — acceptable for most apps but noticeable on streaming.”
— Cost analysis, Costbench · Apr 2026 - −
“Free models are somewhat fragile with timeouts and require sleep between invocations — most users end up moving to paid models.”
— Honest review, Ofox.ai · Mar 2026
When to Choose OpenRouter vs Portkey
- Model-agnostic AI apps that swap providers freely
- Fallback routing when a primary provider is degraded
- Cost optimization across price-equivalent models
- Enterprise LLM deployment with reliability
- Multi-provider failover and load balancing
- Cost reduction through semantic caching
About OpenRouter
OpenRouter is a unified LLM gateway that routes requests to the best available provider for each model, with a single API key giving access to 300+ models from OpenAI, Anthropic, Google, Meta, Mistral, Cohere, and dozens of smaller providers. It exposes an OpenAI-compatible API, so any existing OpenAI SDK code works unchanged.
Two pricing tiers: a Free tier (25+ free-of-charge models, 50 requests/day, 20 RPM, raised to 1,000/day after $10+ in credits) and Pay-as-you-go (300+ models, passthrough provider rates, 5.5% platform fee on credit-card purchases / 5% on crypto). OpenRouter adds ~25-40ms latency over direct provider calls in typical conditions.
Major use cases: avoiding vendor lock-in across OpenAI/Anthropic/Google, fallback routing when a provider is down, cost optimization across price-equivalent models, and tracking spend per API key. Free credits expire after 365 days. As of 2026, OpenRouter is the most-used model gateway for AI startups and indie developers building model-agnostic applications.
About Portkey
Portkey is an AI gateway and control panel trusted by thousands of development teams worldwide, providing comprehensive infrastructure for production AI applications. The platform processes over 10 billion LLM requests monthly with 99.9999% uptime and sub-40ms latency. Portkey's suite includes AI Gateway, Guardrails, Observability, and Prompt Management, routing requests to 1600+ models across major providers through a unified interface. Users praise easy integration, intuitive dashboards, dedicated support, and analytics providing detailed insights into traces, errors, caching, and cost visibility. However, real-world deployments often experience 20-40ms latency overhead (higher than claimed), with Kong benchmarks showing competitors 228% faster. Pricing typically ranges USD 2,000-10,000+ monthly depending on volume and deployment model. While powerful for enterprises, the platform can be overwhelming for new users and may require separate tools for comprehensive MLOps capabilities.
What is LLM Gateways?
Unified API platforms and proxies that aggregate multiple LLM providers behind a single endpoint, providing model routing, fallback, caching, rate limiting, cost optimization, and access control.
Browse all LLM Gatewaystools →Other LLM Gateways Tools
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