01
List price or lower
Every model at the vendor’s list price or below, no platform fee. Ask for a discount on the model you use most.
One API · Every major model · Verified routes
The AI gateway that costs less than going direct.
One OpenAI-compatible API for every major model. Requests are routed to providers we have verified, billed at or below list price, with volume discounts on request and per-request insight into cost, speed and savings.
Free credit to startBase URL
api.osmexo.com/v1dashboard.osmexo.com
Acme Corp
Dashboard
What you spent, how much you used, and how reliable it was.
Balance
$1240.55
At this pace it lasts 4 more months.
vs direct this week$248.60 · saved 41%
Spent
$248.60
Requests
12,480
Saved vs direct
$171.90
Requests per day
hover a day in the real thing
Sample figures. Yours appear within a minute of your first request.Open the real one →
- models in the catalog
- 400+
- text, image, audio, video, music
- model vendors
- 25+
- one key, one bill
- verified provider routes
- 30+
- probed before they serve you
- minimum top-up
- $5
- no subscription, no seats
Top features
Everything a gateway should do. Priced like it should not.
The three that matter most are marked. The rest you will be glad are there.
02
Verified routes
A provider serves you only after automated checks pass, and is re-checked continuously. Verify any model yourself with your own vendor key.
03
Insight per request
Cost, tokens, time to first word and the route taken, on every single response.
04
OpenAI-compatible
Change the base URL and the key. The official SDKs, your frameworks and coding agents (OpenCode, Cline, Roo Code, Continue, Aider) keep working.
05
500+ models, one key
GPT, Claude, Gemini, DeepSeek, Llama, Qwen and more, from 60+ vendors, behind one endpoint.
06
Automatic fallback
If a route fails mid-flight the next verified one answers before your users see an error.
07
Pay per token, from $5
Prepaid credits by PayPal, Visa or Mastercard. No subscription, no seats.
08
Budgets and limits
A limit per organisation, a budget per key, alerts when spend looks wrong.
Models & prices
The models people run most, priced at list or below.
Ranked by requests through OSMEXO in the last 24 hours. Green is what you are billed, per million tokens, in USD.
DeepSeek V4 Flash
DeepSeek · 128k context
Input, per 1M tokens$0.14
Output, per 1M tokens$0.28
toolsreasoning
deepseek/deepseek-v4-flashGPT-4o mini
OpenAI · 128k context
Input, per 1M tokens$0.15
Output, per 1M tokens$0.60
tools
openai/gpt-4o-miniClaude Sonnet 4
Anthropic · 200k context
Input, per 1M tokens$3.00
Output, per 1M tokens$15.00
tools
anthropic/claude-sonnet-4Swipe for more →
Green is what you pay. The 3 most-used models in the last 24 hours, all live on every key. Click a card to explore that model and every other one. Prices captured Sep 17, 12:00 AM UTC.All 400 models and prices Get a key
Anthropic
1 model you can call now
from, per 1M input tokens
$3.00
hover for the models people run most
- Claude Sonnet 4$3.00/M in
DeepSeek
1 model you can call now
from, per 1M input tokens
$0.14
hover for the models people run most
- DeepSeek V4 Flash$0.14/M in
OpenAI
1 model you can call now
from, per 1M input tokens
$0.15
- GPT-4o mini$0.15/M in
Swipe for more →
Pick a family
Pick a family. See the cheapest way to run it.
Choose the vendor, set your month. The five cheapest models we serve in that family, with the price you are billed and what the month comes to.
1 · Family
2 · Tokens per month
200M
10M200M2B
Half input, half output, at the billed price per 1M tokens. Every model here answers on your key today.
Cheapest Anthropic for a month
$1,800with Claude Sonnet 4
Why OSMEXO
Ship to production. Keep the margin.
Six claims, each with the thing that proves it: the live price gap, route checks, the request receipt, budgets, failover and verification.
Cheaper by design
List price or lower on every model, no platform fee, and volume discounts you request per model instead of negotiating with five vendors.
GPT-4o mini · 1M in + 1M outSave 0%
Direct from vendor$0.75
On OSMEXO$0.75
Same model, same tokens. Discounts apply to every request, and each response reports the saving.
Check us
Don’t take our word for it. Check.
Cheaper, and the real model behind the name: two claims you can test yourself, with your own keys.
Compare the price yourself
Every model page shows what you are billed next to what OpenRouter, Together and the others publish for the same model.
Open any model in the dashboard: your billed price sits next to each gateway’s published price for the same model.
Open the comparisonVerify the model yourself
Copy a two-line command from any model page. It sends the same prompts to the vendor with your key and to OSMEXO, and scores how alike the answers are.
your terminal
curl -fsSLO https://dashboard.osmexo.com/verify.mjs
VENDOR_API_KEY=… OSMEXO_API_KEY=… node verify.mjs \
--model anthropic/claude-opus-5 \
--vendor anthropic --vendor-model claude-opus-5
- 1Tokenizer fingerprint
- 2Knowledge cutoff
- 3Hidden system prompt
- 4Exact tasks
Four deterministic checks, nothing that depends on random sampling. Your keys go only to their own vendor; one file, no dependencies.
How it works
One key, one line, one bill.
If your code speaks OpenAI, it already speaks OSMEXO.
- 01
Create a key
Sign up, verify your email and create an API key. New accounts start with free credit, so the first calls cost nothing.
- 02
Change one line
Point your OpenAI SDK at https://api.osmexo.com/v1 and use your OSMEXO key. Same request shapes, same streaming, one bill.
- 03
Watch the savings
Every response carries its cost. The dashboard shows spend, speed and what the same traffic would have cost direct, per key and per model.
python · openai sdk
import os
from openai import OpenAI
client = OpenAI(base_url="https://api.osmexo.com/v1", api_key=os.environ["OSMEXO_API_KEY"])
reply = client.chat.completions.create(model="anthropic/claude-sonnet-4", messages=[{"role": "user", "content": "Hello"}])
response headers200 OK · 412 ms
x-osmexo-cost-micro: 1580 # $0.00158 billed
x-osmexo-list-micro: 3160 # $0.00316 direct
x-osmexo-route: route-1 # verified
x-osmexo-ttfw-ms: 412See it work
Watch a request travel.
Your app sends one request. OSMEXO verifies the route, picks the best one for the model, bills at list or lower and records everything. A route that starts failing is pulled before your users notice.
live trace12,480 requests routed today
--:--:--req_1744c5 anthropic/claude-sonnet-5 → route 1 · ttfw 355 ms · $0.00084 · saved 40% vs direct
--:--:--req_1ba8a6 deepseek/deepseek-v4-pro → route 1 · ttfw 365 ms · $0.00093 · saved 42% vs direct
--:--:--req_200c88 z-ai/glm-5.3 → route 1 · ttfw 376 ms · $0.00101 · saved 50% vs direct
--:--:--req_247069 openai/gpt-4o-mini → route 1 · ttfw 386 ms · $0.00109 · saved 40% vs direct
--:--:--req_28d44a anthropic/claude-opus-5 → route 1 · ttfw 396 ms · $0.00118 · saved 42% vs direct
dashboard.osmexo.com · last 30 days
Balance
$1240.55
At this pace it lasts 4 more months.
Direct from vendor$420.50
On OSMEXO$248.60 · saved 41%
Spent
$248.60
Requests
12,480
Tokens used
41.2M
Time to first word
0.41 s
Succeeded
99.6%
Saved vs direct
$171.90
Requests per day
hover a day in the real thing
Compare
What would your month cost?
Against going direct to each vendor, or against other gateways’ published list prices for exactly the same model.
| Direct with each vendor | With OSMEXO | |
|---|---|---|
| Accounts and keys to manage | One per vendor | One |
| Invoices | One per vendor, in several currencies | One prepaid balance |
| Price per token | List | List or lower |
| Volume discount | Negotiate with each vendor | Request per model in the dashboard |
| When a provider fails | Your users see an error | Automatic fallback to a verified route |
| Provider quality | You find out in production | Verified before it serves you |
| Cost visibility | Monthly, per vendor | On every response, per key |
| Payment | Card per vendor | PayPal, Visa or Mastercard, once |
| Coding agents | A key per vendor in each tool | One key; models marked Coding ready |
Payments
Pay how you like. From five dollars.
Prepaid credits, debited per token, added in minutes with PayPal or a Visa or Mastercard.
PayPalVisaMastercardHosted checkout · US dollars · no fees
- Card
- arrives instantly
- PayPal
- arrives in a few minutes
- Minimum top-up $5
- Credits never expire
- No subscription, no seats
- Default limits $500 a day and $1,000 a month, raised on request
- Unused credits refundable within 30 days
The card number never touches our servers. Payment details →
Questions
Straight answers.
How is OSMEXO cheaper than calling the vendor directly?
Every model is priced at the vendor’s published list price or below, and there is no platform fee on top. Because we route across several providers for the same model, we can grant volume discounts per model. Each response tells you what the same tokens would have cost direct.
What does “discount on demand” mean?
From the dashboard you pick a model you use a lot and ask for a better rate. We review the request, usually within a business day, and the approved discount applies to every call to that model from then on. Nothing to renegotiate with each vendor.
What is a verified route?
A provider only serves a model after our automated checks confirm it returns the right model, a correct answer and acceptable latency. Providers that fail or drift are removed from rotation automatically. You never call an unverified path.
How do I know I am getting the real model and not a cheaper one under the same name?
Check it yourself. Open any model in the dashboard, click “Verify with your own key” and copy a two-line command. It sends the same prompts to the vendor’s own API with your vendor key and to OSMEXO with your OSMEXO key, then scores how alike the answers are: token counts, knowledge cutoff, a hidden-prompt probe and exact tasks. It runs on your machine and your keys go only to their own vendor. Before a route may serve anyone we run the same battery ourselves.
Can I use it with coding agents like OpenCode or Cline?
Yes. Point OpenCode, Cline, Roo Code, Continue or Aider at the OSMEXO base URL with your key and pick a model. Models marked “Coding ready” in the dashboard passed the workload those tools send: streamed tool calls, a tool round trip, files written through tools and a long file. The check runs per route and is repeated.
Do I have to change my code?
Only the base URL and the key. The gateway speaks the OpenAI wire format for chat, responses, embeddings, images, speech and transcription, so the official OpenAI SDKs and most frameworks work as they are.
How do I pay?
Prepaid credits, from $5, paid in US dollars by PayPal or by Visa or Mastercard (debit or credit) through a hosted checkout; the card number never touches our servers. Other card brands are not accepted yet. There is no subscription and no seat fee, and credits never expire.
What happens when a provider goes down?
The gateway retries and falls back to the next verified provider for that model before the first token is sent, so your users see a slower answer instead of an error. You can see which route answered on every request.
Can I control spending?
Yes. Set a monthly limit for the organization, a daily or monthly budget per API key, and a low-balance alert. Purchases are capped per day and per month and can be raised on request. Unusual spend triggers an alert.
Is my data used for training?
No. Prompts and completions pass through to the provider you are routed to and are stored only as much as you choose for your own request logs. Keys are stored hashed and secrets are never logged.
Start in five minutes
Same models. Same code. Smaller bill.
Create a key, change the base URL, and see on the very first response what you saved.
- Free credit to start
- Top up from $5
- No subscription