OSMEXO

OpenAI-compatible AI gateway priced at or below going direct

OSMEXO introduction

OSMEXO is a prepaid AI API gateway that gives you hundreds of models, including Claude, GPT and DeepSeek, through one OpenAI-compatible endpoint, billed per token at or below each vendor's list price.

Website:: osmexo.com

💻 Code & DB Assistantpaid

Screenshot pending review

OSMEXO overview

To switch to OSMEXO you change your base URL to api.osmexo.com/v1 and use an OSMEXO key. Each response carries headers with its cost, the vendor list price, the route used and time to first token, and requests fall back to another route automatically if one fails. Organisations can set budgets and spend limits per key, and a verification script compares outputs with the vendor's own API. Billing is prepaid and pay-per-token with no subscription; top-ups start at $5 by PayPal or card and credits never expire. It works with coding agents such as OpenCode, Cline, Roo Code, Continue and Aider.

OSMEXO features

One OpenAI-compatible endpoint for hundreds of models
Per-response cost, list price and route headers
Automatic fallback between routes
Budgets and spend limits per organisation and key
Output verification tool against vendor APIs
Prepaid credits that never expire

Questions about OSMEXO

OSMEXO pros

Drop-in OpenAI-compatible API
Transparent per-request cost
No subscription

OSMEXO limitations

Requests pass through a third-party gateway
Savings figures on the site are samples

OSMEXO use cases

Use many LLMs with a single API key
Lower token costs compared with paying each vendor
Power coding agents like Cline, Roo Code and Aider

Who OSMEXO is for

Developers
Engineering teams using LLM APIs

OSMEXO pricing

Prepaid pay-per-token billing, no subscription, minimum top-up $5, credits never expire. Example prices per 1M tokens (input/output): Claude Sonnet 4 $3.00/$15.00, GPT-4o mini $0.15/$0.60, DeepSeek V4 Flash $0.14/$0.28. New accounts get some free credit.