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Claude Mythos 5.2 vs EXAONE 4.5 33B

Claude Mythos 5.2 leads the LLM Stats Score 59.6 to 25.2.

Anthropic · LG AI Research · Updated for 2026

Which is better?

Claude Mythos 5.2 leads the overall LLM Stats Score 59.6 to 25.2, ranking #2 overall.

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

Choose Claude Mythos 5.2

  • overall performance matters — it scores 59.6 and ranks #2 on LLM Stats
  • your work emphasizes reasoning — it leads those capability indexes
  • you want the most recent training data — it shipped Nov 2026

Choose EXAONE 4.5 33B

  • you are already invested in the LG AI Research ecosystem

At a glance

The differences that matter most.

Claude Mythos 5.2
Anthropic
EXAONE 4.5 33B
LG AI Research
Core performance indexes
LLM Stats Score
59.6
#2
25.2
#192
Reasoning
53.3
#8
25.7
#185
Cost, coverage & limits
Benchmark wins
—
—
Input price
$8.00 / M
— / M
Output price
$40.00 / M
— / M
Context window
1,000,000
—

Capability indexes

Additional strengths measured across groups of related public benchmarks

3 shared
Index
Claude Mythos 5.2
EXAONE 4.5 33B
Vision
31.5#33
13.3#122
Tool use
38.0#1
9.8#159
Multimodal
31.7#29
16.0#106
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

9 reported for Claude Mythos 5.2 · 15 for EXAONE 4.5 33B

No common benchmarks found

Claude Mythos 5.2 and EXAONE 4.5 33Bdon'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

Context Window

Maximum input and output token capacity

Only Claude Mythos 5.2 specifies input context (1,000,000 tokens). Only Claude Mythos 5.2 specifies output context (128,000 tokens).

Anthropic
Claude Mythos 5.2
Input1,000,000 tokens
Output128,000 tokens
LG AI Research
EXAONE 4.5 33B
Input- tokens
Output- tokens
Wed Nov 11 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Both Claude Mythos 5.2 and EXAONE 4.5 33B support multimodal inputs.

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

Claude Mythos 5.2

Text
Images
Audio
Video

EXAONE 4.5 33B

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 Mythos 5.2

Proprietary

Closed source

EXAONE 4.5 33B

Proprietary

Closed source

Release Timeline

When each model was launched

Claude Mythos 5.2 was released on 2026-11-09, while EXAONE 4.5 33B was released on 2026-04-09.

Claude Mythos 5.2 is 7 months newer than EXAONE 4.5 33B.

Claude Mythos 5.2

Nov 9, 2026

1 days ago

7mo newer
EXAONE 4.5 33B

Apr 9, 2026

7 months ago

Knowledge Cutoff

When training data ends

Claude Mythos 5.2 has a knowledge cutoff of 2026-06-01, while EXAONE 4.5 33B has a cutoff of 2024-12-01.

Claude Mythos 5.2 has more recent training data (up to 2026-06-01), making it potentially better informed about events through that date compared to EXAONE 4.5 33B (2024-12-01).

Claude Mythos 5.2

Jun 2026

1.5 yr newer
EXAONE 4.5 33B

Dec 2024

Outputs Comparison

Notice missing or incorrect data?

Judge for yourself.

Run your own prompts against Claude Mythos 5.2 and EXAONE 4.5 33B side-by-side, then vote on the output you prefer.

Claude Mythos 5.2
✓ Preferred
EXAONE 4.5 33B
Open in Playground

FAQ

Common questions about Claude Mythos 5.2 vs EXAONE 4.5 33B.

Which is better, Claude Mythos 5.2 or EXAONE 4.5 33B?

Claude Mythos 5.2 leads the LLM Stats Score 59.6 to 25.2. Claude Mythos 5.2 is made by Anthropic and EXAONE 4.5 33B is made by LG AI Research. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does Claude Mythos 5.2 compare to EXAONE 4.5 33B in benchmarks?

Claude Mythos 5.2 scores De novo protein binder design: 85.1%, Biomedical image analysis: 80.7%, Protocols Troubleshooting: 77.1%, Terminal-Bench-Science 0.1: 75.3%, Terminal-Bench 4.0: 70.5%. EXAONE 4.5 33B scores AIME 2025: 92.9%, AIME 2026: 92.6%, IFEval: 89.6%, AI2D: 89.0%, MathVista-Mini: 85.0%.

What are the context window sizes for Claude Mythos 5.2 and EXAONE 4.5 33B?

Claude Mythos 5.2 supports 1.0M tokens and EXAONE 4.5 33B 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 Mythos 5.2 and EXAONE 4.5 33B?

Key differences include LLM Stats Score (59.6 vs 25.2). See the full comparison above for benchmark-by-benchmark results.

Who makes Claude Mythos 5.2 and EXAONE 4.5 33B?

Claude Mythos 5.2 is developed by Anthropic and EXAONE 4.5 33B is developed by LG AI Research.

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