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Model garden Router · on request Dedicated · available

Phi 4 reasoning plus

Runs as your own dedicated GPU deployment, ready to launch from the wizard. Data stays in Europe.

[!IMPORTANT] To fully take advantage of the model's capabilities, inference must use temperature=0.8, topk=50, topp=0.95, and dosample=True. For more complex queries, set maxnewtokens=32768 to allow for longer chain-of-thought (CoT).

Start for free ← All models
microsoft/Phi-4-reasoning-plus vLLM ready
text->text · microsoft · sovereign EU
Runs on EU infrastructure operated by European companies; US marketplace capacity is never part of this chain. Full chain
15B
Parameters
33K
Context window
48GB
Minimum VRAM
POST /api/v1/chat/completions On request

Specifications

Parameters 15B
Context window 32,768 tokens
Minimum VRAM 48 GB
Architecture Phi3ForCausalLM (vLLM)
License mit
Modality text->text
Released April 2025
Publisher microsoft ↗

Pricing

Shared router · per token
On request
Not available on the shared router. Pricing on request as a dedicated GPU deployment.
Dedicated GPU · per hour
from €1,08 per hour
Your own vLLM instance on European cloud (48 GB VRAM), billed hourly.

Shared EU router, pay-per-token, scale-to-zero. Dedicated GPU deployments are billed hourly, see pricing.

✓ Verified working on 26-07-2026, responded in 583 ms on our EU infrastructure.

Bench index

Bench is our quality index for every model, 0 to 100. It rests on public measurements (Epoch AI with about 40 benchmarks, LiveBench, LMArena and more) and is refreshed every morning. Where nobody measures, it shows an estimate with a range.

61.1 / 100 · Via LiveBench

Translated from its LiveBench result onto the same scale.

Range 54.7 to 67.4

Sources: Epoch AI ↗ · LiveBench ↗ · LMArena ↗ · Refreshed daily, last on 23-10-2026

LiveBench · 56.6
Reasoning 57.8
Coding 60.6
Mathematics 62.8
Data analysis 54.7
Language 30.7
Instruction following 73.2
LiveBench · All tasks
Reasoning
web of lies v3 51.0
zebra puzzle 54.5
spatial 68.0
Coding
code generation 69.0
code completion 52.2
Mathematics
AMPS Hard 84.0
math comp 90.6
olympiad 13.9
Data analysis
tablejoin 25.2
tablereformat 84.3
Language
connections 33.7
plot unscrambling 18.4
typos 40.0
Instruction following
paraphrase 71.8
simplify 75.4
story generation 75.8
summarize 69.6

Call it now

Drop-in replacement for OpenAI: change only the base URL and API key. The Anthropic format (/v1/messages) is supported too.

curl https://hostyourai.com/api/v1/chat/completions \
  -H "Authorization: Bearer hyai-..." \
  -H "Content-Type: application/json" \
  -d '{
    "model": "microsoft/Phi-4-reasoning-plus",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'

Frequently asked questions

Can I run Phi 4 reasoning plus in the EU?

Yes. HostYourAI runs Phi 4 reasoning plus on GPUs in European datacenters via vLLM. Prompts and outputs never leave the EU and there is no US cloud provider in the chain.

Is hosting Phi 4 reasoning plus GDPR-compliant?

Yes. All processing happens inside the EU, a Data Processing Agreement (DPA) is available and the subprocessor list is public. Open-source weights also mean: no training on your data.

How much does Phi 4 reasoning plus cost?

Phi 4 reasoning plus is available on request: through the shared EU router after a quick chat, or as your own dedicated GPU deployment billed per hour. Tell us your use case and we will set it up for you.

Is the API OpenAI-compatible?

Yes. You use the standard OpenAI SDKs with a custom base URL (https://hostyourai.com/api/v1). The Anthropic Messages API is supported as a drop-in as well.

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