Claude 3.5 Haiku vs Claude Sonnet 4.6 Comparison

Comparing Claude 3.5 Haiku and Claude Sonnet 4.6 across benchmarks, pricing, and capabilities.

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Performance Benchmarks

Comparative analysis across standard metrics

2 benchmarks

Claude 3.5 Haiku outperforms in 0 benchmarks, while Claude Sonnet 4.6 is better at 2 benchmarks (GPQA, SWE-Bench Verified).

Claude Sonnet 4.6 significantly outperforms across most benchmarks.

Sat Mar 14 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

Claude 3.5 Haiku costs less

For input processing, Claude 3.5 Haiku ($0.80/1M tokens) is 3.8x cheaper than Claude Sonnet 4.6 ($3.00/1M tokens).

For output processing, Claude 3.5 Haiku ($4.00/1M tokens) is 3.8x cheaper than Claude Sonnet 4.6 ($15.00/1M tokens).

In conclusion, Claude Sonnet 4.6 is more expensive than Claude 3.5 Haiku.*

* 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 Haiku

Input tokens$0.80

Output tokens$4.00

Best providerAWS Bedrock

Claude Sonnet 4.6

Input tokens$3.00

Output tokens$15.00

Best providerAnthropic

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Context Window

Maximum input and output token capacity

Both models have the same input context window of 200,000 tokens. Claude 3.5 Haiku can generate longer responses up to 200,000 tokens, while Claude Sonnet 4.6 is limited to 64,000 tokens.

Claude 3.5 Haiku

Input200,000 tokens

Output200,000 tokens

Claude Sonnet 4.6

Input200,000 tokens

Output64,000 tokens

Sat Mar 14 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Claude Sonnet 4.6 supports multimodal inputs, whereas Claude 3.5 Haiku does not.

Claude Sonnet 4.6 can handle both text and other forms of data like images, making it suitable for multimodal applications.

Claude 3.5 Haiku

Text

Images

Audio

Video

Claude Sonnet 4.6

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 Haiku

Proprietary

Closed source

Claude Sonnet 4.6

Proprietary

Closed source

Release Timeline

When each model was launched

Claude 3.5 Haiku was released on 2024-10-22, while Claude Sonnet 4.6 was released on 2026-02-17.

Claude Sonnet 4.6 is 16 months newer than Claude 3.5 Haiku.

Claude 3.5 Haiku

Oct 22, 2024

1.4 years ago

Claude Sonnet 4.6

Feb 17, 2026

3 weeks ago

1.3yr 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 Haiku is available from Bedrock, Google, Anthropic. Claude Sonnet 4.6 is available from Anthropic. The availability of providers can affect quality of the model and reliability.