Phi-4 Reasoning vs GPT-5.4
Model Markets Rankings
Intelligence, Cost, and Efficiency
| Ranking | Phi-4-reasoning | GPT-5.4 |
|---|---|---|
| CostLower is better · Published-token output estimate | UnrankedNot in the 36-model eligible cohort | #30 of 36$0.274 per LiveBench case |
Ranks come from the current complete eligible cohorts. Green highlights appear only when both models are ranked in the same metric. Missing required inputs remain unranked, and the three dimensions are not collapsed into an overall winner.
Benchmark Performance
Available Benchmarks
Technical Differences
Side-by-Side Facts
| Field | Phi-4-reasoning | GPT-5.4 |
|---|---|---|
| Developer | Microsoft | OpenAI |
| Family | Phi 4 Reasoning | Gpt 5 4 |
| Model | Phi-4-reasoning | GPT-5.4 |
| Version | Phi-4-reasoning | GPT-5.4 |
| Lifecycle | active | active |
| Released | 2025-04-30 | 2026-03-05 |
| Knowledge cutoff | Unknown | 2025-08-31 |
| Input modalities | Text | Text, Image |
| Output modalities | Text | Text |
| Context window | 33K | 1,050K |
| Total parameters | 14.7B | Unknown |
| Active parameters | Unknown | Unknown |
| License | mit | Unknown |
| Open weights | Yes | No |
| API available | Unknown | Yes |
| Self-hostable | Yes | No |
| Provider access | Unknown | Openai (Standard), Openrouter (Standard) |
| Capabilities | chat, generation, reasoning | chat, generation, reasoning, structured_outputs, tools |
12 comparable fields · 10 material differences · Pair passes the primary-source comparison gate
Phi-4 Reasoning Capabilities
GPT-5.4 Capabilities
Internal Comparison Graph
Related Comparisons
| A | Pair | B | Context |
|---|---|---|---|
Phi-4-reasoningMicrosoft | vs | GPT-6 AstraOpenAI | cross-developer peerstext |
Claude Fable 5.1Anthropic | vs | Phi-4-reasoningMicrosoft | cross-developer peerstext |
 Gemini 3.1 ProGoogle DeepMind | vs | Phi-4-reasoningMicrosoft | cross-developer peerstext |
 DeepSeek-V4-ProDeepSeek | vs | Phi-4-reasoningMicrosoft | cross-developer peerstext |
Phi-4-reasoningMicrosoft | vs | Grok 4.6xAI | cross-developer peerstext |
Phi-4-reasoningMicrosoft | vs |  Qwen3.8-MaxQwen | cross-developer peerstext |
Phi-4-reasoningMicrosoft | vs |  Kimi-K3Moonshot AI | cross-developer peerstext |
 MiniMax-M3MiniMax | vs | Phi-4-reasoningMicrosoft | cross-developer peerstext |
Phi-4-reasoningMicrosoft | vs |  GLM-5.3Z.ai | cross-developer peerstext |
Phi-4-reasoningMicrosoft | vs |  Hy4 previewTencent | cross-developer peerstext |
Seed 2.1 ProByteDance Seed | vs | Phi-4-reasoningMicrosoft | cross-developer peerstext |
Phi-4-reasoningMicrosoft | vs |  Mistral Large 3Mistral AI | cross-developer peerstext |
Primary Evidence
Sources and Freshness
Questions
Phi-4 Reasoning vs GPT-5.4 FAQs
Is Phi-4 Reasoning or GPT-5.4 better for coding?+
This comparison does not currently contain a protocol-matched coding benchmark for both Phi-4 Reasoning and GPT-5.4, so Model Markets cannot name a coding leader from pricing, context size, or capability labels alone.
Which is cheaper, Phi-4 Reasoning or GPT-5.4?+
Only GPT-5.4 has a directly sourced input price: $2.50 per million tokens. Only GPT-5.4 has a directly sourced output price: $15.00 per million tokens.
Which has a larger context window, Phi-4 Reasoning or GPT-5.4?+
GPT-5.4 has the larger sourced context window. Phi-4 Reasoning supports 33K and GPT-5.4 supports 1,050K.
Which performs better in benchmarks, Phi-4 Reasoning or GPT-5.4?+
There is no overall benchmark winner: At least two independently verified, protocol-matched benchmarks are required for an overall winner.
Can Phi-4 Reasoning or GPT-5.4 be self-hosted?+
Phi-4 Reasoning is the only model in this pair currently marked as self-hostable. Phi-4 Reasoning is open weight; GPT-5.4 is not marked open weight.
Can Phi-4 Reasoning and GPT-5.4 understand images?+
Phi-4 Reasoning is not documented with image input; GPT-5.4 is documented with image input. This reflects supported input modalities, not vision quality.
Which can generate longer answers, Phi-4 Reasoning or GPT-5.4?+
Neither has a larger sourced maximum output. Phi-4 Reasoning is — and GPT-5.4 is 128K.
Do Phi-4 Reasoning and GPT-5.4 support reasoning and tool use?+
Phi-4 Reasoning: reasoning. GPT-5.4: reasoning, tool calling, and image input. Feature support does not establish relative quality.
Which is available from more inference providers, Phi-4 Reasoning or GPT-5.4?+
Phi-4 Reasoning has 0 sourced provider routes; GPT-5.4 has 2, so GPT-5.4 has broader tracked availability.
Which offers better value, Phi-4 Reasoning or GPT-5.4?+
There is no universal value winner. Compare the input and output prices above with the matched benchmark result for your workload: cheaper tokens can be offset by different quality, token usage, latency, or provider availability.