The 3 best LLM gateways and routers (2026)
All LLM gateways & routers
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Know when LLM gateways and routers change their prices
Agents we’ve just listed and every plan whose price changed.
One API in front of many models: routing, fallbacks, keys, spend limits and logs.
What the 3 offer
YesNo
Each cell is one LLM gateway
AgentVendor's priceMCP serverAPIOpen sourceSelf-host
theagentsindex.com · All 3 LLM gateways and routers we list.
AgentAPIFreeMCPKeyOpenSelf
LiteLLM
?API +FREE +MCP +KEY ?OPEN +SELF- Not stated: not stated
- Yes: yes
- Yes: yes
- Yes: yes
- Not stated: not stated
- Yes: yes
OpenRouter
?API +FREE +MCP +KEY -OPEN ?SELF- Not stated: not stated
- Yes: yes
- Yes: yes
- Yes: yes
- No: no
- Not stated: not stated
Portkey
?API +FREE +MCP +KEY +OPEN +SELF- Not stated: not stated
- Yes: yes
- Yes: yes
- Yes: yes
- Yes: yes
- Yes: yes
Each answer is read from the agent's own docs and pricing pages. How we check →
theagentsindex.com · 3 agents in this ranking, sheets checked by 29 October 2026.theagentsindex.com/listings.json
No agent meets every filter.
Questions buyers ask
Which LLM gateway here costs the least?
All 3 have a free plan: LiteLLM, OpenRouter and Portkey.
When were these prices checked?
On 29 October 2026, each read on the maker's own pricing page.
Sources and method
The ones whose price, API, docs, sources and limits we could confirm come first. How we check
Every price here was read on the maker's own pricing page.
- LiteLLM: litellm.ai/pricing, checked 29 October 2026
- Portkey: portkey.ai/pricing, checked 29 October 2026