Inference as a Service

The fastest way to ship
open-model AI

One OpenAI-compatible API for the best open models. Switch in a single line, pay per token, and keep your data private. Start free with $5 in credits.

$5 free credits 1 line to switch Reply within 24h
# one endpoint, your key, any model
curl https://api.cloud.baysn.ai/v1/chat/completions \
  -H "Authorization: Bearer $BAYSN_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "MiniMax-M2.7",
    "messages": [{"role":"user",
      "content":"Summarize this support ticket"}]
  }'
from openai import OpenAI

client = OpenAI(
    base_url="https://api.cloud.baysn.ai/v1",
    api_key=os.environ["BAYSN_API_KEY"],
)
resp = client.chat.completions.create(
    model="MiniMax-M2.7",
    messages=[{"role":"user",
      "content":"Summarize this support ticket"}],
)
print(resp.choices[0].message.content)
import OpenAI from "openai";

const client = new OpenAI({
  baseURL: "https://api.cloud.baysn.ai/v1",
  apiKey: process.env.BAYSN_API_KEY,
});
const resp = await client.chat.completions.create({
  model: "MiniMax-M2.7",
  messages: [{ role: "user",
    content: "Summarize this support ticket" }],
});
console.log(resp.choices[0].message.content);

Get started

Three steps to your first token

If your code already talks to OpenAI, it already talks to Baysn. Here's the whole flow

1

Start free

Register with a few details. We set up your account and email your key, usually within 24 hours

2

Paste it into your code

Point base_url at api.cloud.baysn.ai/v1 and drop in your key, the rest of your OpenAI code is unchanged

BAYSN_API_KEY = your-key
3

Call any model

Use any model by name, pay per token, scale to zero, add dedicated capacity when traffic spikes

model = "MiniMax-M2.7"
$0
Free credits on signup
0
Frontier open models, one API
0K
Context window, up to
1 line
To switch from OpenAI

Model library

The open models that matter, already served

A curated set of frontier open models, quantized without quality loss and priced per million tokens. More added regularly

Why Baysn

Why teams pick Baysn over another API

Closed APIs lock you in and learn from your prompts. Self-hosting eats your quarter. Baysn gives you the best open models, served fast, kept private, and dropped in with one line of code.

Switch in one line

OpenAI-compatible across chat, vision, embeddings, and tool calls. Keep your SDK, your prompts, and your evals. Point the base URL at Baysn and your bill drops. No rewrite, no lock-in.

The best open models, served fast

A curated set of frontier open models on a tuned serving stack. Low time-to-first-token, high throughput, and no 200-model junk drawer to dig through.

Your data never trains us

Private by default. Start on isolated serverless, then move to dedicated or fully air-gapped capacity that is yours alone. Your traffic is never used to train any model.

"We run the models. You keep the data"

Dedicated, isolated capacity trusted for compliance-restricted, private, and air-gapped deployments. Inference you can put in front of a regulator, not just on a roadmap.

Without Baysn vs with Baysn

Same app, half the friction

What it takes to ship AI the old way, and what it takes with Baysn

Without Baysn
  • Rewrite code for every provider
  • Your prompts may train someone else's model
  • Opaque pricing and surprise bills
  • Hundreds of mediocre models to wade through
  • Demos, sales calls, and procurement
With Baysn
  • Change one line, keep your OpenAI code
  • Your data stays yours, never trains us
  • Transparent per-token pricing, $5 free
  • A curated set of the best open models
  • Register in minutes, set up within 24 hours

Deployment modes

Start serverless. Scale how you want

Begin per-token in minutes, then move to dedicated capacity or batch when your workload settles, same models, same API

Most popular

Serverless

Per token · pay as you go
  • Auto-scales with your traffic, scales to zero
  • Best for prototyping and variable load
  • Every model in the library, instantly
  • No minimum, no commitment
Start free
Steady production

Dedicated

Per GPU-hour · reserved
  • Isolated, dedicated capacity, your SLA
  • Best for latency-sensitive, high volume
  • Bring your own fine-tune or container
  • Burst capacity for traffic spikes
Talk to us
Offline scale

Batch

Up to 50% off · async
  • Process billions of tokens asynchronously
  • Best for classification and synthetic data
  • Same models, half the price
  • Submit a job, collect results
Start free

Integrations

Drops into the tools you already use

The API is OpenAI-compatible, so Baysn works out of the box with the frameworks, editors, and gateways your team already runs, no glue code

LangChain
LlamaIndex
CrewAI
Vercel AI SDK
LiteLLM
OpenRouter
Cursor
Claude Code
Continue
OpenCode
OpenAI-compatibleFunction callingJSON modeStreaming

Pricing

Per-token, no surprises

Priced per million tokens, input and output billed separately. New accounts start with $5 in free credits

Model
Context
Input / 1M
Output / 1M
gpt-oss-120B gpt-oss-120b
128K
$0.15
$0.75
DeepSeek V3.1 DeepSeek-V3.1
128K
$0.60
$1.70
MiniMax M2.5 MiniMax-M2.5
192K
$0.30
$1.20
MiniMax M2.7 MiniMax-M2.7
192K
$0.60
$2.40

Need a custom fine-tune, a private model, or a committed-volume rate? Dedicated inference capacity is quoted per GPU-hour with short commitments and private deployment options

Get started

Start free

Tell us where to send it. We set up your account and email your API key and console access, usually within 24 hours. New accounts start with $5 in credits.

$5 in free credits · no credit card · we reply within 24 hours

You're on the list

Thanks. A Baysn engineer will set up your account and email your API key and console access, usually within 24 hours.

Want to talk through dedicated or private capacity first? Reach us any time at inference@baysn.ai.

The layer below · GPU Cloud

Want the raw machines instead?

Inference runs on our GPU cloud. If you'd rather rent the GPUs and run your own stack, training or custom serving, start one layer down with Baysn GPU Cloud

Explore GPU Cloud →

Questions

Common questions

Is the API really OpenAI-compatible?

Yes. Point the OpenAI SDK's base_url at api.cloud.baysn.ai/v1, drop in your Baysn key, and call any model by name. Chat, vision, embeddings, streaming, and tool calls all work without code changes

How private is my data?

On serverless your traffic is isolated and never used to train any model. For stricter needs, run on dedicated inference capacity that's yours alone, your own region, on-prem, or fully air-gapped, and your data stays inside it for the entire pipeline: request, processing, response, and logs

How do you make inference so fast?

A tuned serving stack, speculative decoding, FP8 quantization, and continuous batching on high-performance accelerators, with models served close to your region. We optimize for the metrics that matter to you: low time-to-first-token and high throughput per dollar

When does serverless stop making sense?

Roughly past ~10,000 sustained requests per day, dedicated capacity on a per-GPU-hour rate usually beats per-token pricing. You can start serverless to validate, then move to dedicated with the same models and API when your volume settles

Can I run my own fine-tuned or private model?

Yes. Deploy a fine-tune or a custom container on dedicated inference capacity with autoscaling and observability. Talk to us and we'll have you running on your timeline

How is this different from the Baysn GPU Cloud?

GPU Cloud rents you the machines to run whatever you want. Inference is the managed product on top, you call a model through an API and we handle the serving, scaling, and optimization. Same company, two ways to buy

Inference 101

New to inference as a service?

Clear guides from our own team, start here, then come build. No fluff, no sign-up wall

Read the full Inference 101 guide →

Open models. One API. Kept private

Register for access today, or talk to us about dedicated and private capacity

Start free → See GPU Cloud