Model Comparison

GPT-5.2 vs Step3-VL-10B

GPT-5.2 significantly outperforms across most benchmarks.

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Performance Benchmarks

Comparative analysis across standard metrics

1 benchmarks

GPT-5.2 outperforms in 1 benchmarks (AIME 2025), while Step3-VL-10B is better at 0 benchmarks.

GPT-5.2 significantly outperforms across most benchmarks.

Sat May 02 2026 • llm-stats.com

Arena Performance

Human preference votes

Context Window

Maximum input and output token capacity

Only GPT-5.2 specifies input context (400,000 tokens). Only GPT-5.2 specifies output context (128,000 tokens).

OpenAI
GPT-5.2
Input400,000 tokens
Output128,000 tokens
StepFun
Step3-VL-10B
Input- tokens
Output- tokens
Sat May 02 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both GPT-5.2 and Step3-VL-10B support multimodal inputs.

They are both capable of processing various types of data, offering versatility in application.

GPT-5.2

Text
Images
Audio
Video

Step3-VL-10B

Text
Images
Audio
Video

License

Usage and distribution terms

GPT-5.2 is licensed under a proprietary license, while Step3-VL-10B uses Apache 2.0.

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

GPT-5.2

Proprietary

Closed source

Step3-VL-10B

Apache 2.0

Open weights

Release Timeline

When each model was launched

GPT-5.2 was released on 2025-12-11, while Step3-VL-10B was released on 2026-01-15.

Step3-VL-10B is 1 month newer than GPT-5.2.

GPT-5.2

Dec 11, 2025

4 months ago

Step3-VL-10B

Jan 15, 2026

3 months ago

1mo newer

Knowledge Cutoff

When training data ends

GPT-5.2 has a documented knowledge cutoff of 2025-08-25, while Step3-VL-10B's cutoff date is not specified.

We can confirm GPT-5.2's training data extends to 2025-08-25, but cannot make a direct comparison without Step3-VL-10B's cutoff date.

GPT-5.2

Aug 2025

Step3-VL-10B

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Outputs Comparison

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Key Takeaways

OpenAI
Larger context window (400,000 tokens)
Higher AIME 2025 score (100.0% vs 87.7%)
StepFun
Has open weights

Detailed Comparison

AI Model Comparison Table
Feature
OpenAI
GPT-5.2
StepFun
Step3-VL-10B

FAQ

Common questions about GPT-5.2 vs Step3-VL-10B.

Which is better, GPT-5.2 or Step3-VL-10B?

GPT-5.2 significantly outperforms across most benchmarks. GPT-5.2 is made by OpenAI and Step3-VL-10B is made by StepFun. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does GPT-5.2 compare to Step3-VL-10B in benchmarks?

GPT-5.2 scores AIME 2025: 100.0%, HMMT 2025: 99.4%, Tau2 Telecom: 98.7%, Graphwalks BFS <128k: 94.0%, GPQA: 92.4%. Step3-VL-10B scores MMBench: 91.8%, AIME 2025: 87.7%, MathVista: 84.0%, MMMU: 78.1%, MathVision: 70.8%.

What are the context window sizes for GPT-5.2 and Step3-VL-10B?

GPT-5.2 supports 400K tokens and Step3-VL-10B 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-5.2 and Step3-VL-10B?

Key differences include licensing (Proprietary vs Apache 2.0). See the full comparison above for benchmark-by-benchmark results.

Who makes GPT-5.2 and Step3-VL-10B?

GPT-5.2 is developed by OpenAI and Step3-VL-10B is developed by StepFun.