An API for roleplay

Opus and Sonnet,
priced at list.

Six models behind one OpenAI-compatible URL. Paste it into SillyTavern and keep the character card you already have. We publish the same prices you can look up anywhere else — the plan is what makes it cheap, not a markup you can't see.

Start with $2 freeNo card. Discord to sign in.

How far does it actually go?

Allowances are in dollars, which tells you nothing. Here they are in replies, on a 16k-token scene with a 400-token answer and 90% of the context cached — which is what a long chat looks like once it gets going.

Claude Opus 4.5317
Kimi K3529
Claude Sonnet 4.5529
GLM 5.21,443
DeepSeek V4 Flash18,587
GLM 4.7 Flash20,000

messages a day on Wisp — $8.00 of credit, 2 at a time, resets every morning. Unused credit doesn't roll over, which is how the allowance stays this large.

Six models, one base URL

Per million tokens. Cached input is the rate that matters for roleplay, because after the first message most of your context hasn't changed.

Model	Input	Cached	Output	Context
DeepSeek V4 Flashdeepseek-v4-flash	$0.080000	$0.016000	$0.180000	1.3M
GLM 4.7 Flashglm-4-7-flash	$0.060000	$0.010000	$0.400000	203K
GLM 5.2glm-5-2	$0.966000	$0.193200	$3.036000	1M
Kimi K3kimi-k3	$3.000000	$0.300000	$15.000000	1M
Claude Sonnet 4.5claude-sonnet-4-5	$3.000000	$0.300000	$15.000000	1M
Claude Opus 4.5claude-opus-4-5	$5.000000	$0.500000	$25.000000	200K

Plans

Allowances reset daily, not monthly. You get the whole thing again tomorrow morning instead of rationing it for four weeks.

Wisp

$5.00/mo

Every day: $8.00 of credit
At once: 2 requests
Rate: 20/min

Shade

$12.00/mo

Every day: $25.00 of credit
At once: 3 requests
Rate: 40/min

Umbral

$22.00/mo

Every day: $60.00 of credit
At once: 5 requests
Rate: 60/min

Eclipse

$60.00/mo

Every day: $120.00 of credit
At once: 8 requests
Rate: 100/min

It's just an OpenAI-compatible endpoint

Chat Completions, streaming, the usual fields. In SillyTavern pick a custom OpenAI-compatible endpoint, paste the base URL and a key, and carry on. Full walkthrough.

curl https://api.umbraapi.dev/v1/chat/completions \
  -H "Authorization: Bearer sk-umbra-..." \
  -H "Content-Type: application/json" \
  -d '{"model":"claude-opus-4-5",
       "messages":[{"role":"user","content":"hello"}],
       "stream":true}'

$8.00 a day, from $5.00 a month.

The $2 is yours for 14 days and works on every model, including Opus. Spend it before you decide anything.