id: microsoft/phi-4-reasoning-plus
canonical_slug: microsoft/phi-4-reasoning-plus-04-30
hugging_face_id: microsoft/Phi-4-reasoning-plus
name: 'Microsoft: Phi 4 Reasoning Plus'
type: chat
created: 1746130961
description: |-
  Phi-4-reasoning-plus is an enhanced 14B parameter model from Microsoft, fine-tuned from Phi-4 with additional reinforcement learning to boost accuracy on math, science, and code reasoning tasks. It uses the same dense decoder-only transformer architecture as Phi-4, but generates longer, more comprehensive outputs structured into a step-by-step reasoning trace and final answer.

  While it offers improved benchmark scores over Phi-4-reasoning across tasks like AIME, OmniMath, and HumanEvalPlus, its responses are typically ~50% longer, resulting in higher latency. Designed for English-only applications, it is well-suited for structured reasoning workflows where output quality takes priority over response speed.
context_length: 32768
architecture:
  modality: text->text
  input_modalities:
    - text
  output_modalities:
    - text
  tokenizer: Other
  instruct_type: null
pricing:
  prompt: '0.00000007'
  completion: '0.00000035'
  input_cache_read: ''
  input_cache_write: ''
  request: '0'
  image: '0'
  web_search: '0'
  internal_reasoning: '0'
  unit: 1
  currency: USD
supported_parameters:
  - max_tokens
  - temperature
  - top_p
  - reasoning
  - include_reasoning
  - stop
  - frequency_penalty
  - presence_penalty
  - repetition_penalty
  - response_format
  - top_k
  - seed
  - min_p
model_provider: microsoft