Phi-4 Multimodal Instruct vs GPT-5.1
At a Glance
| Compare |  Phi-4 Multimodal InstructMicrosoft |  GPT-5.1OpenAI |
|---|---|---|
| Intelligence, Cost, and Efficiency | ||
| IntelligenceHigher is better · MM Intelligence v2.5 | UnrankedNot in the 46-model eligible cohort | #37 of 4625.7 score · 2/3 sources · provisional · missing LiveBench · full-core range 17.1–50.5 |
| Pricing and Limits | ||
| Input priceFrom · USD / 1M tokens | Not reported | $1.25Openai ↗ · Sep 3, 2026 |
| Output priceFrom · USD / 1M tokens | Not reported | $10.00Openai ↗ · Sep 3, 2026 |
| Context windowMaximum documented tokens | 131K | 400K |
| Model facts checked | Aug 28, 2026View model evidence → | Sep 3, 2026View model evidence → |
Token prices are the lowest available sourced USD rates; input and output may use different providers. Cost ranking estimates output spend on LiveBench, not a full request bill. Ranking methodology →
Available Benchmarks
Side-by-Side Facts
| Field | Phi-4-multimodal-instruct | GPT-5.1 |
|---|---|---|
| Developer | Microsoft | OpenAI |
| Family | Phi 4 Multimodal Instruct | Gpt 5 1 |
| Model | Phi-4-multimodal-instruct | GPT-5.1 |
| Version | Phi-4-multimodal-instruct | GPT-5.1 |
| Lifecycle | active | active |
| Released | 2025-02-26 | 2025-11-13 |
| Knowledge cutoff | Unknown | 2024-09-30 |
| Input modalities | Text, Image, Audio | Text, Image |
| Output modalities | Text | Text |
| Context window | 131K | 400K |
| Total parameters | 5.6B | 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 | chat, generation, reasoning, structured_outputs, tools |
Phi-4 Multimodal Instruct Capabilities
GPT-5.1 Capabilities
Related Comparisons
All image comparisons →| A | Pair | B | Context |
|---|---|---|---|
Phi-4-multimodal-instructMicrosoft | vs | GPT-6 AstraOpenAI | cross-developer peersimage, text |
Claude Fable 5.1Anthropic | vs | Phi-4-multimodal-instructMicrosoft | cross-developer peersimage, text |
 Gemini 3.1 ProGoogle DeepMind | vs | Phi-4-multimodal-instructMicrosoft | cross-developer peerstext |
 DeepSeek-V4.1-FlashDeepSeek | vs | Phi-4-multimodal-instructMicrosoft | cross-developer peersimage, text |
Phi-4-multimodal-instructMicrosoft | vs | Grok 4.6xAI | cross-developer peersimage, text |
Phi-4-multimodal-instructMicrosoft | vs |  Qwen3.8-MaxQwen | cross-developer peersimage, text |
Phi-4-multimodal-instructMicrosoft | vs |  Kimi-K3Moonshot AI | cross-developer peersimage, text |
 MiniMax-M3MiniMax | vs | Phi-4-multimodal-instructMicrosoft | cross-developer peersimage, text |
Phi-4-multimodal-instructMicrosoft | vs |  GLM-5.3Z.ai | cross-developer peerstext |
Phi-4-multimodal-instructMicrosoft | vs |  Hy4 previewTencent | cross-developer peerstext |
Seed 2.1 ProByteDance Seed | vs | Phi-4-multimodal-instructMicrosoft | cross-developer peersimage, text |
Phi-4-multimodal-instructMicrosoft | vs |  Mistral Large 3Mistral AI | cross-developer peersimage, text |
Primary Evidence
Sources and Freshness
Questions
Phi-4 Multimodal Instruct vs GPT-5.1 FAQs
Is Phi-4 Multimodal Instruct or GPT-5.1 better for coding?+
This comparison does not currently contain a protocol-matched coding benchmark for both Phi-4 Multimodal Instruct and GPT-5.1, so Model Markets cannot name a coding leader from pricing, context size, or capability labels alone.
Which is cheaper, Phi-4 Multimodal Instruct or GPT-5.1?+
Only GPT-5.1 has a directly sourced input price: $1.25 per million tokens. Only GPT-5.1 has a directly sourced output price: $10.00 per million tokens.
Which has a larger context window, Phi-4 Multimodal Instruct or GPT-5.1?+
GPT-5.1 has the larger sourced context window. Phi-4 Multimodal Instruct supports 131K and GPT-5.1 supports 400K.
Which performs better in benchmarks, Phi-4 Multimodal Instruct or GPT-5.1?+
There is no overall benchmark winner: At least two independently verified, protocol-matched benchmarks are required for an overall winner.
Can Phi-4 Multimodal Instruct or GPT-5.1 be self-hosted?+
Phi-4 Multimodal Instruct is the only model in this pair currently marked as self-hostable. Phi-4 Multimodal Instruct is open weight; GPT-5.1 is not marked open weight.
Can Phi-4 Multimodal Instruct and GPT-5.1 understand images?+
Phi-4 Multimodal Instruct is documented with image input; GPT-5.1 is documented with image input. This reflects supported input modalities, not vision quality.
Which can generate longer answers, Phi-4 Multimodal Instruct or GPT-5.1?+
Neither has a larger sourced maximum output. Phi-4 Multimodal Instruct is — and GPT-5.1 is 128K.
Do Phi-4 Multimodal Instruct and GPT-5.1 support reasoning and tool use?+
Phi-4 Multimodal Instruct: image input. GPT-5.1: reasoning, tool calling, and image input. Feature support does not establish relative quality.
Which is available from more inference providers, Phi-4 Multimodal Instruct or GPT-5.1?+
Phi-4 Multimodal Instruct has 0 sourced provider routes; GPT-5.1 has 2, so GPT-5.1 has broader tracked availability.
Which offers better value, Phi-4 Multimodal Instruct or GPT-5.1?+
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.