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Claude Opus 5.5 vs MAI-Code-1.1-Flash

Claude Opus 5.5 leads the LLM Stats Score 60.3 to 27.8. MAI-Code-1.1-Flash is 17.8x cheaper per token.

Anthropic · Microsoft · Updated for 2026

Which is better?

Claude Opus 5.5 leads the overall LLM Stats Score 60.3 to 27.8, ranking #1 overall.

On price, MAI-Code-1.1-Flash is roughly 17.8x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

Claude Opus 5.5 also accepts a larger context window (1,000,000 input tokens), making it the stronger choice for long documents and large codebases.

Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.

Choose Claude Opus 5.5

  • overall performance matters — it scores 60.3 and ranks #1 on LLM Stats
  • your work emphasizes reasoning and coding — it leads those capability indexes
  • you process long inputs — it offers a 1,000,000 token context window
  • you want the most recent training data — it shipped Sep 2026

Choose MAI-Code-1.1-Flash

  • cost matters — it's about 17.8x cheaper per token

At a glance

The differences that matter most.

Claude Opus 5.5
Anthropic
MAI-Code-1.1-Flash
Microsoft
Core performance indexes
LLM Stats Score
60.3
#1
27.8
#146
Reasoning
58.4
#1
27.5
#142
Coding
51.4
#1
18.8
#117
Agents
45.7
#2
10.6
#121
Cost, coverage & limits
Benchmark wins
—
—
Input price
$4.00 / M
$0.20 / M
Output price
$20.00 / M
$1.20 / M
Context window
1,000,000
256,000

Individual benchmarks

31 reported for Claude Opus 5.5 · 2 for MAI-Code-1.1-Flash

No common benchmarks found

Claude Opus 5.5 and MAI-Code-1.1-Flashdon't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.

Human preference

Blind head-to-head votes and playground preference scores

Pricing Analysis

Price comparison per million tokens

MAI-Code-1.1-Flash costs less

For input processing, Claude Opus 5.5 ($4.00/1M tokens) is 20.0x more expensive than MAI-Code-1.1-Flash ($0.20/1M tokens).

For output processing, Claude Opus 5.5 ($20.00/1M tokens) is 16.7x more expensive than MAI-Code-1.1-Flash ($1.20/1M tokens).

In conclusion, Claude Opus 5.5 is more expensive than MAI-Code-1.1-Flash.*

* Using a 3:1 ratio of input to output tokens

Lowest available price from all providers
Fri Oct 02 2026 • llm-stats.com
Anthropic
Claude Opus 5.5
Input tokens$4.00
Output tokens$20.00
Best providerAnthropic
Microsoft
MAI-Code-1.1-Flash
Input tokens$0.20
Output tokens$1.20
Best providerUnknown Organization
Notice missing or incorrect data?

Context Window

Maximum input and output token capacity

Claude Opus 5.5 accepts 1,000,000 input tokens compared to MAI-Code-1.1-Flash's 256,000 tokens. Only Claude Opus 5.5 specifies output context (128,000 tokens).

Anthropic
Claude Opus 5.5
Input1,000,000 tokens
Output128,000 tokens
Microsoft
MAI-Code-1.1-Flash
Input256,000 tokens
Output- tokens
Fri Oct 02 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Both Claude Opus 5.5 and MAI-Code-1.1-Flash support multimodal inputs.

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

Claude Opus 5.5

Text
Images
Audio
Video

MAI-Code-1.1-Flash

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.

Claude Opus 5.5

Proprietary

Closed source

MAI-Code-1.1-Flash

Proprietary

Closed source

Release Timeline

When each model was launched

Claude Opus 5.5 was released on 2026-09-22, while MAI-Code-1.1-Flash was released on 2026-08-11.

Claude Opus 5.5 is 1 month newer than MAI-Code-1.1-Flash.

Claude Opus 5.5

Sep 22, 2026

1 weeks ago

1mo newer
MAI-Code-1.1-Flash

Aug 11, 2026

1 months ago

Knowledge Cutoff

When training data ends

Claude Opus 5.5 has a documented knowledge cutoff of 2026-06-01, while MAI-Code-1.1-Flash's cutoff date is not specified.

We can confirm Claude Opus 5.5's training data extends to 2026-06-01, but cannot make a direct comparison without MAI-Code-1.1-Flash's cutoff date.

Claude Opus 5.5

Jun 2026

MAI-Code-1.1-Flash

—

Provider Availability

Claude Opus 5.5 is available from Anthropic. MAI-Code-1.1-Flash is available from GitHub Copilot.

Claude Opus 5.5

anthropic logo
Anthropic
Input Price:Input: $4.00/1MOutput Price:Output: $20.00/1M

MAI-Code-1.1-Flash

github-copilot logo
Unknown Organization
Input Price:Input: $0.20/1MOutput Price:Output: $1.20/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?

Judge for yourself.

Run your own prompts against Claude Opus 5.5 and MAI-Code-1.1-Flash side-by-side, then vote on the output you prefer.

Claude Opus 5.5
✓ Preferred
MAI-Code-1.1-Flash
Open in Playground

FAQ

Common questions about Claude Opus 5.5 vs MAI-Code-1.1-Flash.

Which is better, Claude Opus 5.5 or MAI-Code-1.1-Flash?

Claude Opus 5.5 leads the LLM Stats Score 60.3 to 27.8. Claude Opus 5.5 is made by Anthropic and MAI-Code-1.1-Flash is made by Microsoft. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does Claude Opus 5.5 compare to MAI-Code-1.1-Flash in benchmarks?

Claude Opus 5.5 scores BenchCAD (with Python tool): 96.2%, Global-MMLU: 94.3%, SWE-bench Multilingual: 93.9%, MILU: 93.1%, ArXivMath: 91.2%. MAI-Code-1.1-Flash scores SWE-Bench Verified: 72.6%, Terminal-Bench 2.1: 62.9%.

Is Claude Opus 5.5 cheaper than MAI-Code-1.1-Flash?

MAI-Code-1.1-Flash is 20.0x cheaper for input tokens. Claude Opus 5.5 costs $4.00/M input and $20.00/M output via anthropic. MAI-Code-1.1-Flash costs $0.20/M input and $1.20/M output via github-copilot.

What are the context window sizes for Claude Opus 5.5 and MAI-Code-1.1-Flash?

Claude Opus 5.5 supports 1.0M tokens and MAI-Code-1.1-Flash supports 256K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Claude Opus 5.5 and MAI-Code-1.1-Flash?

Key differences include LLM Stats Score (60.3 vs 27.8), context window (1.0M vs 256K), input pricing ($4.00 vs $0.20/M). See the full comparison above for benchmark-by-benchmark results.

Who makes Claude Opus 5.5 and MAI-Code-1.1-Flash?

Claude Opus 5.5 is developed by Anthropic and MAI-Code-1.1-Flash is developed by Microsoft.

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