OpenRouter alternative: when a gateway is cheaper
OpenRouter is the default answer for "one key, many models". It is good at breadth. It is not always the cheapest per token, and the difference compounds if you push real volume.
What each is optimised for
| OpenRouter | Pay-as-you-go gateway | |
|---|---|---|
| Model breadth | Very large | Large, incl. Chinese models |
| Pricing model | Provider price + platform fee | Flat volume rate |
| Frontier model cost | Close to list | 50% of list for Claude (verified) |
| Minimum top-up | Low | $1 |
| Failover routing | Built in | Varies |
Honest answer: if you need breadth across dozens of niche providers and automatic failover, OpenRouter is hard to beat. If you push most of your volume through three or four frontier models, a discounted flat rate will usually win on cost.
Where the gap shows up
Take Claude Sonnet 5 at 200M input and 20M output a month:
- At list price: $400 + $200 = $600 / month
- At the volume rate: $200 + $100 = $300 / month
That is $3,600 a year on one model. Run your own volume through the calculator.
Can you use both?
Yes, and many teams should. Keep OpenRouter for breadth and fallback, route your high-volume frontier traffic through the cheaper endpoint. Both are just a base_url away — see the SDK guide.