Model Comparison

Claude Opus 4.5 vs K-EXAONE-236B-A23BWhich is better in 2026?

Claude Opus 4.5 significantly outperforms across most benchmarks. K-EXAONE-236B-A23B is 14.3x cheaper per token.

Verdict: Claude Opus 4.5 vs K-EXAONE-236B-A23B — which is better?

Claude Opus 4.5 (by Anthropic) and K-EXAONE-236B-A23B (by LG AI Research) 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.

Claude Opus 4.5 outperforms in 1 benchmarks (MMMLU), while K-EXAONE-236B-A23B is better at 0 benchmarks. Claude Opus 4.5 significantly outperforms across most benchmarks.

On price, K-EXAONE-236B-A23B is roughly 14.3x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

Claude Opus 4.5 also accepts a larger context window (200,000 input tokens), making it the stronger choice for long documents and large codebases.

Choose Claude Opus 4.5 if…

  • you want the strongest raw capability — it leads on 1 of 1 shared benchmarks
  • you process long inputs — it offers a 200,000 token context window

Choose K-EXAONE-236B-A23B if…

  • cost matters — it's about 14.3x cheaper per token
  • you want the most recent training data — it shipped Dec 2025
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Performance Benchmarks

Comparative analysis across standard metrics

1 benchmarks

Claude Opus 4.5 outperforms in 1 benchmarks (MMMLU), while K-EXAONE-236B-A23B is better at 0 benchmarks.

Claude Opus 4.5 significantly outperforms across most benchmarks.

Sun Jun 07 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

K-EXAONE-236B-A23B costs less

For input processing, Claude Opus 4.5 ($5.00/1M tokens) is 8.3x more expensive than K-EXAONE-236B-A23B ($0.60/1M tokens).

For output processing, Claude Opus 4.5 ($25.00/1M tokens) is 25.0x more expensive than K-EXAONE-236B-A23B ($1.00/1M tokens).

In conclusion, Claude Opus 4.5 is more expensive than K-EXAONE-236B-A23B.*

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

Lowest available price from all providers
Sun Jun 07 2026 • llm-stats.com
Anthropic
Claude Opus 4.5
Input tokens$5.00
Output tokens$25.00
Best providerAnthropic
LG AI Research
K-EXAONE-236B-A23B
Input tokens$0.60
Output tokens$1.00
Best providerFriendliAI
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

Claude Opus 4.5 accepts 200,000 input tokens compared to K-EXAONE-236B-A23B's 32,768 tokens. Claude Opus 4.5 can generate longer responses up to 64,000 tokens, while K-EXAONE-236B-A23B is limited to 32,768 tokens.

Anthropic
Claude Opus 4.5
Input200,000 tokens
Output64,000 tokens
LG AI Research
K-EXAONE-236B-A23B
Input32,768 tokens
Output32,768 tokens
Sun Jun 07 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Claude Opus 4.5 supports multimodal inputs, whereas K-EXAONE-236B-A23B does not.

Claude Opus 4.5 can handle both text and other forms of data like images, making it suitable for multimodal applications.

Claude Opus 4.5

Text
Images
Audio
Video

K-EXAONE-236B-A23B

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 4.5

Proprietary

Closed source

K-EXAONE-236B-A23B

Proprietary

Closed source

Release Timeline

When each model was launched

Claude Opus 4.5 was released on 2025-11-24, while K-EXAONE-236B-A23B was released on 2025-12-31.

K-EXAONE-236B-A23B is 1 month newer than Claude Opus 4.5.

Claude Opus 4.5

Nov 24, 2025

6 months ago

K-EXAONE-236B-A23B

Dec 31, 2025

5 months ago

1mo newer

Knowledge Cutoff

When training data ends

Claude Opus 4.5 has a knowledge cutoff of 2025-03-31, while K-EXAONE-236B-A23B has a cutoff of 2025-10-01.

K-EXAONE-236B-A23B has more recent training data (up to 2025-10-01), making it potentially better informed about events through that date compared to Claude Opus 4.5 (2025-03-31).

Claude Opus 4.5

Mar 2025

K-EXAONE-236B-A23B

Oct 2025

7 mo newer

Provider Availability

Claude Opus 4.5 is available from Anthropic. K-EXAONE-236B-A23B is available from FriendliAI.

Claude Opus 4.5

anthropic logo
Anthropic
Input Price:Input: $5.00/1MOutput Price:Output: $25.00/1M

K-EXAONE-236B-A23B

friendli logo
FriendliAI
Input Price:Input: $0.60/1MOutput Price:Output: $1.00/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Key Takeaways

Anthropic
Larger context window (200,000 tokens)
Supports multimodal inputs
Higher MMMLU score (90.8% vs 85.7%)
LG AI Research
Less expensive input tokens
Less expensive output tokens

Detailed Comparison

AI Model Comparison Table
Feature
Anthropic
Claude Opus 4.5
LG AI Research
K-EXAONE-236B-A23B

FAQ

Common questions about Claude Opus 4.5 vs K-EXAONE-236B-A23B.

Which is better, Claude Opus 4.5 or K-EXAONE-236B-A23B?

Claude Opus 4.5 significantly outperforms across most benchmarks. Claude Opus 4.5 is made by Anthropic and K-EXAONE-236B-A23B is made by LG AI Research. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does Claude Opus 4.5 compare to K-EXAONE-236B-A23B in benchmarks?

Claude Opus 4.5 scores Tau2 Telecom: 98.2%, MMMLU: 90.8%, Tau2 Retail: 88.9%, GPQA: 87.0%, SWE-Bench Verified: 80.9%. K-EXAONE-236B-A23B scores AIME 2025: 92.8%, MMMLU: 85.7%, MMLU-Pro: 83.8%, LiveCodeBench v6: 80.7%, t2-bench: 73.2%.

Is Claude Opus 4.5 cheaper than K-EXAONE-236B-A23B?

K-EXAONE-236B-A23B is 8.3x cheaper for input tokens. Claude Opus 4.5 costs $5.00/M input and $25.00/M output via anthropic. K-EXAONE-236B-A23B costs $0.60/M input and $1.00/M output via friendli.

What are the context window sizes for Claude Opus 4.5 and K-EXAONE-236B-A23B?

Claude Opus 4.5 supports 200K tokens and K-EXAONE-236B-A23B supports 33K 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 4.5 and K-EXAONE-236B-A23B?

Key differences include context window (200K vs 33K), input pricing ($5.00 vs $0.60/M), multimodal support (yes vs no). See the full comparison above for benchmark-by-benchmark results.

Who makes Claude Opus 4.5 and K-EXAONE-236B-A23B?

Claude Opus 4.5 is developed by Anthropic and K-EXAONE-236B-A23B is developed by LG AI Research.

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