Claude 3.5 Sonnet vs o1 Comparison

Comparing Claude 3.5 Sonnet and o1 across benchmarks, pricing, and capabilities.

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Performance Benchmarks

Comparative analysis across standard metrics

11 benchmarks

Claude 3.5 Sonnet outperforms in 3 benchmarks (HumanEval, MGSM, SWE-Bench Verified), while o1 is better at 8 benchmarks (GPQA, GSM8k, MATH, MathVista, MMLU, MMMU, TAU-bench Airline, TAU-bench Retail).

o1 shows notably better performance in the majority of benchmarks.

Sun Mar 15 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

Claude 3.5 Sonnet costs less

For input processing, Claude 3.5 Sonnet ($3.00/1M tokens) is 5.0x cheaper than o1 ($15.00/1M tokens).

For output processing, Claude 3.5 Sonnet ($15.00/1M tokens) is 4.0x cheaper than o1 ($60.00/1M tokens).

In conclusion, o1 is more expensive than Claude 3.5 Sonnet.*

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

Lowest available price from all providers

Sun Mar 15 2026 • llm-stats.com

Claude 3.5 Sonnet

Input tokens$3.00

Output tokens$15.00

Best providerAnthropic

Input tokens$15.00

Output tokens$60.00

Best providerAzure

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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 Sonnet can generate longer responses up to 200,000 tokens, while o1 is limited to 100,000 tokens.

Claude 3.5 Sonnet

Input200,000 tokens

Output200,000 tokens

Input200,000 tokens

Output100,000 tokens

Sun Mar 15 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Claude 3.5 Sonnet supports multimodal inputs, whereas o1 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

o1

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

Proprietary

Closed source

Release Timeline

When each model was launched

Claude 3.5 Sonnet was released on 2024-10-22, while o1 was released on 2024-12-17.

o1 is 2 months newer than Claude 3.5 Sonnet.

Claude 3.5 Sonnet

Oct 22, 2024

1.4 years ago

Dec 17, 2024

1.2 years ago

1mo 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 Anthropic, Bedrock, Google. o1 is available from Azure, OpenAI. The availability of providers can affect quality of the model and reliability.