Claude 3.5 Sonnet vs Mercury 2 Comparison

Comparing Claude 3.5 Sonnet and Mercury 2 across benchmarks, pricing, and capabilities.

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Performance Benchmarks

Comparative analysis across standard metrics

1 benchmarks

Claude 3.5 Sonnet outperforms in 0 benchmarks, while Mercury 2 is better at 1 benchmark (GPQA).

Mercury 2 significantly outperforms across most benchmarks.

Sat Mar 14 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

Mercury 2 costs less

For input processing, Claude 3.5 Sonnet ($3.00/1M tokens) is 12.0x more expensive than Mercury 2 ($0.25/1M tokens).

For output processing, Claude 3.5 Sonnet ($15.00/1M tokens) is 20.0x more expensive than Mercury 2 ($0.75/1M tokens).

In conclusion, Claude 3.5 Sonnet is more expensive than Mercury 2.*

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

Lowest available price from all providers

Sat Mar 14 2026 • llm-stats.com

Claude 3.5 Sonnet

Input tokens$3.00

Output tokens$15.00

Best providerAWS Bedrock

Mercury 2

Input tokens$0.25

Output tokens$0.75

Best providerInception

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Context Window

Maximum input and output token capacity

Claude 3.5 Sonnet accepts 200,000 input tokens compared to Mercury 2's 128,000 tokens. Claude 3.5 Sonnet can generate longer responses up to 200,000 tokens, while Mercury 2 is limited to 8,192 tokens.

Claude 3.5 Sonnet

Input200,000 tokens

Output200,000 tokens

Mercury 2

Input128,000 tokens

Output8,192 tokens

Sat Mar 14 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Claude 3.5 Sonnet supports multimodal inputs, whereas Mercury 2 does not.

Claude 3.5 Sonnet can handle both text and other forms of data like images, making it suitable for multimodal applications.

Claude 3.5 Sonnet

Text

Images

Audio

Video

Mercury 2

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 3.5 Sonnet

Proprietary

Closed source

Mercury 2

Proprietary

Closed source

Release Timeline

When each model was launched

Claude 3.5 Sonnet was released on 2024-06-21, while Mercury 2 was released on 2026-02-24.

Mercury 2 is 20 months newer than Claude 3.5 Sonnet.

Claude 3.5 Sonnet

Jun 21, 2024

1.7 years ago

Mercury 2

Feb 24, 2026

2 weeks ago

1.7yr 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

Provider Availability

Claude 3.5 Sonnet is available from Bedrock, Google. Mercury 2 is available from Inception. The availability of providers can affect quality of the model and reliability.