Model Comparison

GPT OSS 120B vs Phi-3.5-vision-instructWhich is better in 2026?

Comparing GPT OSS 120B and Phi-3.5-vision-instruct across benchmarks, pricing, and capabilities.

Verdict: GPT OSS 120B vs Phi-3.5-vision-instruct — which is better?

GPT OSS 120B (by OpenAI) and Phi-3.5-vision-instruct (by Microsoft) are two of the AI models people compare most. Here is how they stack up on benchmarks, price and capabilities, and which one to pick in 2026.

Choose GPT OSS 120B if…

  • you want the most recent training data — it shipped Aug 2025

Choose Phi-3.5-vision-instruct if…

  • you are already invested in the Microsoft ecosystem
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Performance Benchmarks

Comparative analysis across standard metrics

No common benchmarks found

GPT OSS 120B and Phi-3.5-vision-instructdon't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.

Arena Performance

Human preference votes

Model Size

Parameter count comparison

112.6B diff

GPT OSS 120B has 112.6B more parameters than Phi-3.5-vision-instruct, making it 2681.0% larger.

OpenAI
GPT OSS 120B
116.8Bparameters
Microsoft
Phi-3.5-vision-instruct
4.2Bparameters
116.8B
GPT OSS 120B
4.2B
Phi-3.5-vision-instruct

Context Window

Maximum input and output token capacity

Only GPT OSS 120B specifies input context (131,072 tokens). Only GPT OSS 120B specifies output context (131,072 tokens).

OpenAI
GPT OSS 120B
Input131,072 tokens
Output131,072 tokens
Microsoft
Phi-3.5-vision-instruct
Input- tokens
Output- tokens
Tue Jun 23 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Phi-3.5-vision-instruct supports multimodal inputs, whereas GPT OSS 120B does not.

Phi-3.5-vision-instruct can handle both text and other forms of data like images, making it suitable for multimodal applications.

GPT OSS 120B

Text
Images
Audio
Video

Phi-3.5-vision-instruct

Text
Images
Audio
Video

License

Usage and distribution terms

GPT OSS 120B is licensed under Apache 2.0, while Phi-3.5-vision-instruct uses MIT.

License differences may affect how you can use these models in commercial or open-source projects.

GPT OSS 120B

Apache 2.0

Open weights

Phi-3.5-vision-instruct

MIT

Open weights

Release Timeline

When each model was launched

GPT OSS 120B was released on 2025-08-05, while Phi-3.5-vision-instruct was released on 2024-08-23.

GPT OSS 120B is 12 months newer than Phi-3.5-vision-instruct.

GPT OSS 120B

Aug 5, 2025

10 months ago

11mo newer
Phi-3.5-vision-instruct

Aug 23, 2024

1.8 years ago

Knowledge Cutoff

When training data ends

Neither model specifies a knowledge cutoff date.

Unable to compare the recency of their training data.

No cutoff dates available

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Key Takeaways

OpenAI
Larger context window (131,072 tokens)
Microsoft
Supports multimodal inputs

Detailed Comparison

AI Model Comparison Table
Feature
OpenAI
GPT OSS 120B
Microsoft
Phi-3.5-vision-instruct

FAQ

Common questions about GPT OSS 120B vs Phi-3.5-vision-instruct.

Which is better, GPT OSS 120B or Phi-3.5-vision-instruct?

GPT OSS 120B (OpenAI) and Phi-3.5-vision-instruct (Microsoft) each have strengths in different areas. Compare their benchmark scores, pricing, context windows, and capabilities above to determine which fits your needs.

How does GPT OSS 120B compare to Phi-3.5-vision-instruct in benchmarks?

GPT OSS 120B scores MMLU: 90.0%, CodeForces: 82.1%, GPQA: 80.1%, TAU-bench Retail: 67.8%, HealthBench: 57.6%. Phi-3.5-vision-instruct scores ScienceQA: 91.3%, POPE: 86.1%, MMBench: 81.9%, ChartQA: 81.8%, AI2D: 78.1%.

What are the context window sizes for GPT OSS 120B and Phi-3.5-vision-instruct?

GPT OSS 120B supports 131K tokens and Phi-3.5-vision-instruct supports an unknown number of tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between GPT OSS 120B and Phi-3.5-vision-instruct?

Key differences include multimodal support (no vs yes), licensing (Apache 2.0 vs MIT). See the full comparison above for benchmark-by-benchmark results.

Who makes GPT OSS 120B and Phi-3.5-vision-instruct?

GPT OSS 120B is developed by OpenAI and Phi-3.5-vision-instruct is developed by Microsoft.

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