Model Comparison

Grok 4.5 vs Step3-VL-10BWhich is better in 2026?

Comparing Grok 4.5 and Step3-VL-10B across benchmarks, pricing, and capabilities.

Verdict: Grok 4.5 vs Step3-VL-10B — which is better?

Grok 4.5 (by xAI) and Step3-VL-10B (by StepFun) 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 Grok 4.5 if…

  • you want the most recent training data — it shipped Jul 2026

Choose Step3-VL-10B if…

  • you need open weights you can self-host or fine-tune

Performance Benchmarks

Comparative analysis across standard metrics

No common benchmarks found

Grok 4.5 and Step3-VL-10Bdon't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.

Arena Performance

Human preference votes

Context Window

Maximum input and output token capacity

Only Grok 4.5 specifies input context (500,000 tokens).

xAI
Grok 4.5
Input500,000 tokens
Output- tokens
StepFun
Step3-VL-10B
Input- tokens
Output- tokens
Tue Jul 21 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Grok 4.5 and Step3-VL-10B support multimodal inputs.

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

Grok 4.5

Text
Images
Audio
Video

Step3-VL-10B

Text
Images
Audio
Video

License

Usage and distribution terms

Grok 4.5 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.

Grok 4.5

Proprietary

Closed source

Step3-VL-10B

Apache 2.0

Open weights

Release Timeline

When each model was launched

Grok 4.5 was released on 2026-07-16, while Step3-VL-10B was released on 2026-01-15.

Grok 4.5 is 6 months newer than Step3-VL-10B.

Grok 4.5

Jul 16, 2026

5 days ago

6mo newer
Step3-VL-10B

Jan 15, 2026

6 months ago

Knowledge Cutoff

When training data ends

Grok 4.5 has a documented knowledge cutoff of 2026-02-01, while Step3-VL-10B's cutoff date is not specified.

We can confirm Grok 4.5's training data extends to 2026-02-01, but cannot make a direct comparison without Step3-VL-10B's cutoff date.

Grok 4.5

Feb 2026

Step3-VL-10B

—

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Key Takeaways

xAI
Larger context window (500,000 tokens)
StepFun
Has open weights

Detailed Comparison

Interactive Arena

Judge for yourself.

Run your own prompts against Grok 4.5 and Step3-VL-10B side-by-side, then vote on the output you prefer.

Grok 4.5
✓ Preferred
Step3-VL-10B
Open in Playground
AI Model Comparison Table
Feature
xAI
Grok 4.5
StepFun
Step3-VL-10B

FAQ

Common questions about Grok 4.5 vs Step3-VL-10B.

Which is better, Grok 4.5 or Step3-VL-10B?

Grok 4.5 (xAI) and Step3-VL-10B (StepFun) each have strengths in different areas. Compare their benchmark scores, pricing, context windows, and capabilities above to determine which fits your needs.

How does Grok 4.5 compare to Step3-VL-10B in benchmarks?

Grok 4.5 scores GPQA: 93.0%, Terminal-Bench 2.1: 83.3%, Artificial Analysis Coding Agent Index v1.1: 76.0%, SWE-Bench Pro: 64.7%, AA-Omniscience Index: 63.0%. 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 Grok 4.5 and Step3-VL-10B?

Grok 4.5 supports 500K 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 Grok 4.5 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 Grok 4.5 and Step3-VL-10B?

Grok 4.5 is developed by xAI and Step3-VL-10B is developed by StepFun.

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