LLM Reference

Phi-4 Mini Reasoning

Released
2026-05-16
Last refreshed
2026-05-22
Status
Researched 105d ago
Open sourceCommercial use: permittedLong context

Phi-4 Mini Reasoning is a released long context model with open-source and 128k context; evaluate it while provider pricing coverage matures.

Use it for

  • Teams evaluating long context
  • Workloads that can use a 128k context window

Do not use it for

  • Cost-sensitive launches that need sourced token pricing
  • Vision or document-understanding workloads
  • Strict JSON or tool-calling flows
Specifications
Family
Phi-4
Released
2026-05-16
Context
128k
Parameters
3.8B
Knowledge cutoff
2025-02
Specialization
reasoning
Openness
Open source
License
MITOSI-approvedCommercial use: permitted
Weights
Unknown
Code
Unknown
Created by

Advancing the state-of-the-art in AI and computing.

Redmond, Washington, United States
Founded 1991
Website
Pricing

No tracked provider token pricing is available yet.

About

Microsoft Phi-4 Mini with reasoning capabilities optimized for step-by-step problem solving. Distinct from phi-4-mini-flash-reasoning (which emphasizes speed). Engineer note: check if same as phi-4-mini-flash-reasoning in seed; may be a different checkpoint.

Top use-case fit

Long context

Included by capability and metadata signals in the decision map.

Provider price ladder

No tracked provider token pricing is available for this model yet.

Capabilities

Reasoning

Benchmark peer barsfor Long context

No task-mapped benchmark peers are available for this model yet.

Benchmark scores(3)

Scores are benchmark-specific and are direction-aware: the same numeric gap can mean very different outcomes across suites. Use the leaderboard context and this model's provider route to decide whether the winning margin is meaningful for your workload.
BenchmarkScoreVersionEvaluationSource
AIME 202457.5From official Microsoft technical report, Table 3 (accuracy)Observed 2026-06-07Source
MATH-50094.6From official Microsoft technical report (accuracy)Observed 2026-06-07Source
Google-Proof Q&A52.0GPQA Diamond (accuracy)Observed 2026-06-07Source

Migration checks

No linked migration route is available for this model yet.

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