Model Comparison

Claude Opus 4.6 vs Claude Opus 4

Claude Opus 4.6 significantly outperforms across most benchmarks. Claude Opus 4.6 is 3.0x cheaper per token.

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Performance Benchmarks

Comparative analysis across standard metrics

5 benchmarks

Claude Opus 4.6 outperforms in 5 benchmarks (AIME 2025, ARC-AGI v2, GPQA, MMMLU, SWE-Bench Verified), while Claude Opus 4 is better at 0 benchmarks.

Claude Opus 4.6 significantly outperforms across most benchmarks.

Sat May 30 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

Claude Opus 4.6 costs less

For input processing, Claude Opus 4.6 ($5.00/1M tokens) is 3.0x cheaper than Claude Opus 4 ($15.00/1M tokens).

For output processing, Claude Opus 4.6 ($25.00/1M tokens) is 3.0x cheaper than Claude Opus 4 ($75.00/1M tokens).

In conclusion, Claude Opus 4 is more expensive than Claude Opus 4.6.*

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

Lowest available price from all providers

Sat May 30 2026 • llm-stats.com

Claude Opus 4.6

Input tokens$5.00

Output tokens$25.00

Best providerAnthropic

Claude Opus 4

Input tokens$15.00

Output tokens$75.00

Best providerAnthropic

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Context Window

Maximum input and output token capacity

Claude Opus 4.6 accepts 1,000,000 input tokens compared to Claude Opus 4's 200,000 tokens. Claude Opus 4.6 can generate longer responses up to 128,000 tokens, while Claude Opus 4 is limited to 32,000 tokens.

Claude Opus 4.6

Input1,000,000 tokens

Output128,000 tokens

Claude Opus 4

Input200,000 tokens

Output32,000 tokens

Sat May 30 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Claude Opus 4.6 and Claude Opus 4 support multimodal inputs.

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

Claude Opus 4.6

Text

Images

Audio

Video

Claude Opus 4

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 4.6

Proprietary

Closed source

Claude Opus 4

Proprietary

Closed source

Release Timeline

When each model was launched

Claude Opus 4.6 was released on 2026-02-05, while Claude Opus 4 was released on 2025-05-22.

Claude Opus 4.6 is 9 months newer than Claude Opus 4.

Claude Opus 4.6

Feb 5, 2026

3 months ago

8mo newer

Claude Opus 4

May 22, 2025

1.0 years ago

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

Provider Availability

Claude Opus 4.6 is available from Anthropic. Claude Opus 4 is available from Anthropic, Bedrock, Google.

Claude Opus 4.6

Anthropic

Input Price:Input: $5.00/1MOutput Price:Output: $25.00/1M

Claude Opus 4

Anthropic

Input Price:Input: $15.00/1MOutput Price:Output: $75.00/1M

AWS Bedrock

Input Price:Input: $15.00/1MOutput Price:Output: $75.00/1M

Google

Input Price:Input: $15.00/1MOutput Price:Output: $75.00/1M

* Prices shown are per million tokens

Outputs Comparison

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Key Takeaways

Claude Opus 4.6

View details

Anthropic

Larger context window (1,000,000 tokens)

Less expensive input tokens

Less expensive output tokens

Higher AIME 2025 score (99.8% vs 75.5%)

Higher ARC-AGI v2 score (68.8% vs 8.6%)

Higher GPQA score (91.3% vs 79.6%)

Higher MMMLU score (91.1% vs 88.8%)

Higher SWE-Bench Verified score (80.8% vs 72.5%)

Claude Opus 4

View details

Anthropic

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

Claude Opus 4.6

Claude Opus 4

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Detailed Comparison

AI Model Comparison Table
Feature	Claude Opus 4.6	Claude Opus 4

FAQ

Common questions about Claude Opus 4.6 vs Claude Opus 4.

Which is better, Claude Opus 4.6 or Claude Opus 4?

Claude Opus 4.6 significantly outperforms across most benchmarks. Claude Opus 4.6 is made by Anthropic and Claude Opus 4 is made by Anthropic. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does Claude Opus 4.6 compare to Claude Opus 4 in benchmarks?

Claude Opus 4.6 scores Vending-Bench 2: 100.0%, AIME 2025: 99.8%, Tau2 Telecom: 99.3%, Graphwalks parents >128k: 95.4%, MRCR v2 (8-needle): 93.0%. Claude Opus 4 scores MMMLU: 88.8%, TAU-bench Retail: 81.4%, GPQA: 79.6%, MMMU (validation): 76.5%, AIME 2025: 75.5%.

Is Claude Opus 4.6 cheaper than Claude Opus 4?

Claude Opus 4.6 is 3.0x cheaper for input tokens. Claude Opus 4.6 costs $5.00/M input and $25.00/M output via anthropic. Claude Opus 4 costs $15.00/M input and $75.00/M output via anthropic.

What are the context window sizes for Claude Opus 4.6 and Claude Opus 4?

Claude Opus 4.6 supports 1.0M tokens and Claude Opus 4 supports 200K 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 4.6 and Claude Opus 4?

Key differences include context window (1.0M vs 200K), input pricing ($5.00 vs $15.00/M). See the full comparison above for benchmark-by-benchmark results.