Model Comparison

MAI-Code-1-Flash vs GPT-5.5 ProWhich is better in 2026?

GPT-5.5 Pro significantly outperforms across most benchmarks.

Verdict: MAI-Code-1-Flash vs GPT-5.5 Pro — which is better?

MAI-Code-1-Flash (by Microsoft) and GPT-5.5 Pro (by OpenAI) 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.

MAI-Code-1-Flash outperforms in 0 benchmarks, while GPT-5.5 Pro is better at 2 benchmarks (FrontierMath, Humanity's Last Exam). GPT-5.5 Pro significantly outperforms across most benchmarks.

Choose MAI-Code-1-Flash if…

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

Choose GPT-5.5 Pro if…

  • you want the strongest raw capability — it leads on 2 of 2 shared benchmarks

Performance Benchmarks

Comparative analysis across standard metrics

2 benchmarks

MAI-Code-1-Flash outperforms in 0 benchmarks, while GPT-5.5 Pro is better at 2 benchmarks (FrontierMath, Humanity's Last Exam).

GPT-5.5 Pro significantly outperforms across most benchmarks.

Fri Jul 17 2026 • llm-stats.com

Arena Performance

Human preference votes

Context Window

Maximum input and output token capacity

Only GPT-5.5 Pro specifies input context (1,050,000 tokens). Only GPT-5.5 Pro specifies output context (128,000 tokens).

Microsoft
MAI-Code-1-Flash
Input- tokens
Output- tokens
OpenAI
GPT-5.5 Pro
Input1,050,000 tokens
Output128,000 tokens
Fri Jul 17 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

GPT-5.5 Pro supports multimodal inputs, whereas MAI-Code-1-Flash does not.

GPT-5.5 Pro can handle both text and other forms of data like images, making it suitable for multimodal applications.

MAI-Code-1-Flash

Text
Images
Audio
Video

GPT-5.5 Pro

Text
Images
Audio
Video

License

Usage and distribution terms

Both models are licensed under proprietary licenses.

Both models have usage restrictions defined by their respective organizations.

MAI-Code-1-Flash

Proprietary

Closed source

GPT-5.5 Pro

Proprietary

Closed source

Release Timeline

When each model was launched

MAI-Code-1-Flash was released on 2026-06-02, while GPT-5.5 Pro was released on 2026-04-23.

MAI-Code-1-Flash is 1 month newer than GPT-5.5 Pro.

MAI-Code-1-Flash

Jun 2, 2026

1 months ago

1mo newer
GPT-5.5 Pro

Apr 23, 2026

2 months ago

Knowledge Cutoff

When training data ends

GPT-5.5 Pro has a documented knowledge cutoff of 2025-12-01, while MAI-Code-1-Flash's cutoff date is not specified.

We can confirm GPT-5.5 Pro's training data extends to 2025-12-01, but cannot make a direct comparison without MAI-Code-1-Flash's cutoff date.

MAI-Code-1-Flash

—

GPT-5.5 Pro

Dec 2025

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Key Takeaways

Microsoft

No standout differentiators in the data we have for this pair.

OpenAI
Larger context window (1,050,000 tokens)
Supports multimodal inputs
Higher FrontierMath score (39.6% vs 6.3%)
Higher Humanity's Last Exam score (57.2% vs 18.0%)

Detailed Comparison

Interactive Arena

Judge for yourself.

Run your own prompts against MAI-Code-1-Flash and GPT-5.5 Pro side-by-side, then vote on the output you prefer.

MAI-Code-1-Flash
✓ Preferred
GPT-5.5 Pro
Open in Playground
AI Model Comparison Table
Feature
Microsoft
MAI-Code-1-Flash
OpenAI
GPT-5.5 Pro

FAQ

Common questions about MAI-Code-1-Flash vs GPT-5.5 Pro.

Which is better, MAI-Code-1-Flash or GPT-5.5 Pro?

GPT-5.5 Pro significantly outperforms across most benchmarks. MAI-Code-1-Flash is made by Microsoft and GPT-5.5 Pro is made by OpenAI. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does MAI-Code-1-Flash compare to GPT-5.5 Pro in benchmarks?

MAI-Code-1-Flash scores AIME 2026: 92.5%, GPQA: 84.6%, IFBench: 75.0%, Tau2 Telecom: 71.7%, SWE-Bench Verified: 71.6%. GPT-5.5 Pro scores BrowseComp: 90.1%, GDPval-MM: 82.3%, Humanity's Last Exam: 57.2%, FrontierMath: 39.6%, GeneBench: 33.2%.

What are the context window sizes for MAI-Code-1-Flash and GPT-5.5 Pro?

MAI-Code-1-Flash supports an unknown number of tokens and GPT-5.5 Pro supports 1.1M tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between MAI-Code-1-Flash and GPT-5.5 Pro?

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

Who makes MAI-Code-1-Flash and GPT-5.5 Pro?

MAI-Code-1-Flash is developed by Microsoft and GPT-5.5 Pro is developed by OpenAI.

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