Model Comparison

Claude 3 Opus vs Claude 3 Sonnet

Claude 3 Opus significantly outperforms across most benchmarks. Claude 3 Sonnet is 5.0x cheaper per token.

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Performance Benchmarks

Comparative analysis across standard metrics

11 benchmarks

Claude 3 Opus outperforms in 11 benchmarks (ARC-C, BIG-Bench Hard, DROP, GPQA, GSM8k, HellaSwag, HumanEval, MATH, MGSM, MMLU, MMLU-Pro), while Claude 3 Sonnet is better at 0 benchmarks.

Claude 3 Opus significantly outperforms across most benchmarks.

Sun Mar 29 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

Claude 3 Sonnet costs less

For input processing, Claude 3 Opus ($15.00/1M tokens) is 5.0x more expensive than Claude 3 Sonnet ($3.00/1M tokens).

For output processing, Claude 3 Opus ($75.00/1M tokens) is 5.0x more expensive than Claude 3 Sonnet ($15.00/1M tokens).

In conclusion, Claude 3 Opus is more expensive than Claude 3 Sonnet.*

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

Lowest available price from all providers
Sun Mar 29 2026 • llm-stats.com
Anthropic
Claude 3 Opus
Input tokens$15.00
Output tokens$75.00
Best providerAnthropic
Anthropic
Claude 3 Sonnet
Input tokens$3.00
Output tokens$15.00
Best providerAnthropic
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

Both models have the same input context window of 200,000 tokens. Both models can generate responses up to 200,000 tokens.

Anthropic
Claude 3 Opus
Input200,000 tokens
Output200,000 tokens
Anthropic
Claude 3 Sonnet
Input200,000 tokens
Output200,000 tokens
Sun Mar 29 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Claude 3 Opus and Claude 3 Sonnet support multimodal inputs.

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

Claude 3 Opus

Text
Images
Audio
Video

Claude 3 Sonnet

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 3 Opus

Proprietary

Closed source

Claude 3 Sonnet

Proprietary

Closed source

Release Timeline

When each model was launched

Both models were released on 2024-02-29.

They likely represent similar generations of model development.

Claude 3 Opus

Feb 29, 2024

2.1 years ago

Claude 3 Sonnet

Feb 29, 2024

2.1 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 3 Opus is available from Anthropic, Bedrock, Google. Claude 3 Sonnet is available from Anthropic, Bedrock, Google.

Claude 3 Opus

anthropic logo
Anthropic
Input Price:Input: $15.00/1MOutput Price:Output: $75.00/1M
bedrock logo
AWS Bedrock
Input Price:Input: $15.00/1MOutput Price:Output: $75.00/1M
google logo
Google
Input Price:Input: $15.00/1MOutput Price:Output: $75.00/1M

Claude 3 Sonnet

anthropic logo
Anthropic
Input Price:Input: $3.00/1MOutput Price:Output: $15.00/1M
bedrock logo
AWS Bedrock
Input Price:Input: $3.00/1MOutput Price:Output: $15.00/1M
google logo
Google
Input Price:Input: $3.00/1MOutput Price:Output: $15.00/1M
* Prices shown are per million tokens

Outputs Comparison

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Key Takeaways

Anthropic
Higher ARC-C score (96.4% vs 93.2%)
Higher BIG-Bench Hard score (86.8% vs 82.9%)
Higher DROP score (83.1% vs 78.9%)
Higher GPQA score (50.4% vs 40.4%)
Higher GSM8k score (95.0% vs 92.3%)
Higher HellaSwag score (95.4% vs 89.0%)
Higher HumanEval score (84.9% vs 73.0%)
Higher MATH score (60.1% vs 43.1%)
Higher MGSM score (90.7% vs 83.5%)
Higher MMLU score (86.8% vs 79.0%)
Higher MMLU-Pro score (68.5% vs 56.8%)
Anthropic
Less expensive input tokens
Less expensive output tokens

Detailed Comparison

AI Model Comparison Table
Feature
Anthropic
Claude 3 Opus
Anthropic
Claude 3 Sonnet

FAQ

Common questions about Claude 3 Opus vs Claude 3 Sonnet

Claude 3 Opus significantly outperforms across most benchmarks. Claude 3 Opus is made by Anthropic and Claude 3 Sonnet is made by Anthropic. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.
Claude 3 Opus scores ARC-C: 96.4%, HellaSwag: 95.4%, GSM8k: 95.0%, MGSM: 90.7%, BIG-Bench Hard: 86.8%. Claude 3 Sonnet scores ARC-C: 93.2%, GSM8k: 92.3%, HellaSwag: 89.0%, MGSM: 83.5%, BIG-Bench Hard: 82.9%.
Claude 3 Sonnet is 5.0x cheaper for input tokens. Claude 3 Opus costs $15.00/M input and $75.00/M output via anthropic. Claude 3 Sonnet costs $3.00/M input and $15.00/M output via anthropic.
Claude 3 Opus supports 200K tokens and Claude 3 Sonnet supports 200K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.
Key differences include input pricing ($15.00 vs $3.00/M). See the full comparison above for benchmark-by-benchmark results.