First response in under a minute.

lt-trial-ba1ef28c6d32ed6980678d8dcopy

Shared and rate-limited: 2 concurrent requests, for evaluation only. It rotates when abused. For production, email artem@llmtech.eu — a personal key with 64 concurrent is issued the same day, usually within the hour.

curl https://api.llmtech.eu/v1/chat/completions \
  -H "Authorization: Bearer lt-trial-ba1ef28c6d32ed6980678d8d" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "unsloth/Qwen3.8-27B-NVFP4",
    "messages": [{"role": "user", "content": "Say hello"}],
    "stream": true
  }'copy

from openai import OpenAI

client = OpenAI(
    base_url="https://api.llmtech.eu/v1",
    api_key="lt-trial-ba1ef28c6d32ed6980678d8d",
)

r = client.chat.completions.create(
    model="unsloth/Qwen3.8-27B-NVFP4",
    messages=[{"role": "user", "content": "Say hello"}],
    stream=True,
)
for chunk in r:
    print(chunk.choices[0].delta.content or "", end="")copy

import OpenAI from "openai";

const client = new OpenAI({
  baseURL: "https://api.llmtech.eu/v1",
  apiKey: "lt-trial-ba1ef28c6d32ed6980678d8d",
});

const stream = await client.chat.completions.create({
  model: "unsloth/Qwen3.8-27B-NVFP4",
  messages: [{ role: "user", content: "Say hello" }],
  stream: true,
});
for await (const chunk of stream) {
  process.stdout.write(chunk.choices[0]?.delta?.content ?? "");
}copy

The model reasons adaptively: it thinks on hard prompts and skips thinking on trivial ones. You can override per request:

{
  "model": "unsloth/Qwen3.8-27B-NVFP4",
  "messages": [{"role": "user", "content": "2+2?"}],
  "chat_template_kwargs": {
    "enable_thinking": false
  }
}copy

Reasoning text comes back in reasoning (non-streaming) or reasoning_content deltas (streaming). Reasoning tokens are billed as output.

Automatic, no code changes. Repeated prompt prefixes are billed at $0.04/M instead of $0.25/M. Cache materializes from the second identical-prefix request onward and works on prefixes from roughly 5K tokens. Check usage.prompt_tokens_details.cached_tokens in the response to see it working.

Code	Meaning	What to do
401	invalid or missing API key	check the Authorization header
404	unknown model id	use unsloth/Qwen3.8-27B-NVFP4
429	concurrency limit reached	retry after the Retry-After header (1s); requests never queue silently
400	malformed request / context overflow	the error message names the exact problem
5xx	server-side failure	retry with backoff; check status

Default limits: 64 concurrent requests per production key (trial: 2), context up to 262,144 tokens. Need more concurrency — ask, the capacity exists.