76
Stack Score
Best for
Developers prototyping LLM apps who want to compare models, hedge provider risk, or optimize costs without rewriting code.
At a glance
- Pricing
- paid
- Setup time
- 5 minutes
- Learning curve
- easy
- Last verified
- 5/19/2026
What we love
- ✓Switch models with a single string change — no SDK swaps
- ✓Saves a week of integration work when A/B testing models
- ✓Cheaper provider routing finds you bargains automatically
Where it falls short
- −Small markup on top of underlying model costs
- −Some advanced provider features (Anthropic tool use, OpenAI Realtime) lag
- −Rate limits depend on which provider OpenRouter routes to
Pricing
✓ Pricing verified Jun 21, 20263 tiers
Free
$0
monthly
- ✓25+ free models access
- ✓4 free providers
- ✓Chat and API access
- ✓50 requests/day rate limit
- ✓Community support
Pay-as-you-go
5.5%
platform fee on usage
- ✓400+ models, 60+ providers
- ✓No minimum spend or lock-in
- ✓Activity logs and export
- ✓Credit card, crypto, bank transfer
- ✓Email support
Enterprise
Custom
annual contract
- ✓Bulk discounts on platform fees
- ✓Policy-based routing and SSO/SAML
- ✓Contractual SLAs and invoicing
- ✓BYOK with millions of free requests
- ✓Support SLA with shared Slack channel
Why we picked it
If you're prototyping and want to A/B test models, OpenRouter saves you a week of integration work.
Overview
Unified API for hundreds of LLMs across providers. Pay per token, switch models with a single string change. Free tier on some models.
Key features
- ●Unified API for 200+ models from OpenAI, Anthropic, Google, Meta, Mistral, and more
- ●OpenAI-compatible endpoint — drop-in replacement for existing code
- ●Automatic failover to alternate providers if one is down
- ●Real-time pricing comparison and per-token transparency
- ●Free tier on select open-source models
- ●BYO API keys to route through your own provider accounts
Best use cases
Model A/B testing
Compare GPT-5, Claude Opus, and Gemini Pro on the same prompts without three SDKs.
Provider redundancy
Configure fallback chains so your app stays up when one model provider has an outage.
Cost-optimized routing
Send routine prompts to DeepSeek and reserve frontier models for hard requests.
Integrations
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