The AI arena is free today

Open Superagent

Claude 3 Opus vs Phi-3.5-MoE-instruct

Claude 3 Opus leads the LLM Stats Score 9.9 to 1.9.

Anthropic · Microsoft · Updated for 2026

Which is better?

Claude 3 Opus leads the overall LLM Stats Score 9.9 to 1.9, ranking #273 overall.

In the 10 individual benchmarks reported for both models, Claude 3 Opus wins 10; this is a narrower head-to-head signal than the composite indexes.

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

Choose Claude 3 Opus

  • overall performance matters — it scores 9.9 and ranks #273 on LLM Stats
  • your work emphasizes reasoning — it leads those capability indexes
  • you value its reported benchmark strengths — it wins 10 of 10 exact shared results

Choose Phi-3.5-MoE-instruct

  • you want the most recent training data — it shipped Aug 2024
  • you need open weights you can self-host or fine-tune

At a glance

The differences that matter most.

Claude 3 Opus
Anthropic
Phi-3.5-MoE-instruct
Microsoft
Core performance indexes
LLM Stats Score
9.9
#273
1.9
#324
Reasoning
9.8
#267
1.4
#317
Coding
5.1
#208
-3.8
#260
Cost, coverage & limits
Benchmark wins
10 of 10
0 of 10
Input price
$15.00 / M
— / M
Output price
$75.00 / M
— / M
Context window
200,000
—

Capability indexes

Additional strengths measured across groups of related public benchmarks

3 shared
Index
Claude 3 Opus
Phi-3.5-MoE-instruct
Math
16.1#211
4.3#285
Finance
14.3#129
4.3#177
Legal
14.3#113
4.3#163
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

11 reported for Claude 3 Opus · 31 for Phi-3.5-MoE-instruct

10 shared

Claude 3 Opus outperforms in 10 benchmarks (ARC-C, BIG-Bench Hard, GPQA, GSM8k, HellaSwag, HumanEval, MATH, MGSM, MMLU, MMLU-Pro), while Phi-3.5-MoE-instruct is better at 0 benchmarks.

Claude 3 Opus significantly outperforms across most benchmarks.

Sat Sep 26 2026 • llm-stats.com

Human preference

Blind head-to-head votes and playground preference scores

Context Window

Maximum input and output token capacity

Only Claude 3 Opus specifies input context (200,000 tokens). Only Claude 3 Opus specifies output context (200,000 tokens).

Anthropic
Claude 3 Opus
Input200,000 tokens
Output200,000 tokens
Microsoft
Phi-3.5-MoE-instruct
Input- tokens
Output- tokens
Sat Sep 26 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Claude 3 Opus supports multimodal inputs, whereas Phi-3.5-MoE-instruct does not.

Claude 3 Opus can handle both text and other forms of data like images, making it suitable for multimodal applications.

Claude 3 Opus

Text
Images
Audio
Video

Phi-3.5-MoE-instruct

Text
Images
Audio
Video

License

Usage and distribution terms

Claude 3 Opus is licensed under a proprietary license, while Phi-3.5-MoE-instruct uses MIT.

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

Claude 3 Opus

Proprietary

Closed source

Phi-3.5-MoE-instruct

MIT

Open weights

Release Timeline

When each model was launched

Claude 3 Opus was released on 2024-02-29, while Phi-3.5-MoE-instruct was released on 2024-08-23.

Phi-3.5-MoE-instruct is 6 months newer than Claude 3 Opus.

Claude 3 Opus

Feb 29, 2024

2.6 years ago

Phi-3.5-MoE-instruct

Aug 23, 2024

2.1 years ago

5mo newer

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→

Judge for yourself.

Run your own prompts against Claude 3 Opus and Phi-3.5-MoE-instruct side-by-side, then vote on the output you prefer.

Claude 3 Opus
✓ Preferred
Phi-3.5-MoE-instruct
Open in Playground

FAQ

Common questions about Claude 3 Opus vs Phi-3.5-MoE-instruct.

Which is better, Claude 3 Opus or Phi-3.5-MoE-instruct?

Claude 3 Opus leads the LLM Stats Score 9.9 to 1.9. Claude 3 Opus is made by Anthropic and Phi-3.5-MoE-instruct 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 3 Opus compare to Phi-3.5-MoE-instruct in benchmarks?

Claude 3 Opus scores ARC-C: 96.4%, HellaSwag: 95.4%, GSM8k: 95.0%, MGSM: 90.7%, BIG-Bench Hard: 86.8%. Phi-3.5-MoE-instruct scores ARC-C: 91.0%, OpenBookQA: 89.6%, GSM8k: 88.7%, PIQA: 88.6%, RULER: 87.1%.

What are the context window sizes for Claude 3 Opus and Phi-3.5-MoE-instruct?

Claude 3 Opus supports 200K tokens and Phi-3.5-MoE-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 Claude 3 Opus and Phi-3.5-MoE-instruct?

Key differences include LLM Stats Score (9.9 vs 1.9), multimodal support (yes vs no), licensing (Proprietary vs MIT). See the full comparison above for benchmark-by-benchmark results.

Who makes Claude 3 Opus and Phi-3.5-MoE-instruct?

Claude 3 Opus is developed by Anthropic and Phi-3.5-MoE-instruct is developed by Microsoft.

Related comparisons