Model Comparison

o3-mini vs Claude 3 Sonnet

o3-mini significantly outperforms across most benchmarks. o3-mini is 3.1x cheaper per token.

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Performance Benchmarks

Comparative analysis across standard metrics

4 benchmarks

o3-mini outperforms in 4 benchmarks (GPQA, MATH, MGSM, MMLU), while Claude 3 Sonnet is better at 0 benchmarks.

o3-mini significantly outperforms across most benchmarks.

Fri Apr 17 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

o3-mini costs less

For input processing, o3-mini ($1.10/1M tokens) is 2.7x cheaper than Claude 3 Sonnet ($3.00/1M tokens).

For output processing, o3-mini ($4.40/1M tokens) is 3.4x cheaper than Claude 3 Sonnet ($15.00/1M tokens).

In conclusion, Claude 3 Sonnet is more expensive than o3-mini.*

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

Lowest available price from all providers
Fri Apr 17 2026 • llm-stats.com
OpenAI
o3-mini
Input tokens$1.10
Output tokens$4.40
Best providerAzure
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. Claude 3 Sonnet can generate longer responses up to 200,000 tokens, while o3-mini is limited to 100,000 tokens.

OpenAI
o3-mini
Input200,000 tokens
Output100,000 tokens
Anthropic
Claude 3 Sonnet
Input200,000 tokens
Output200,000 tokens
Fri Apr 17 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Claude 3 Sonnet supports multimodal inputs, whereas o3-mini does not.

Claude 3 Sonnet can handle both text and other forms of data like images, making it suitable for multimodal applications.

o3-mini

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.

o3-mini

Proprietary

Closed source

Claude 3 Sonnet

Proprietary

Closed source

Release Timeline

When each model was launched

o3-mini was released on 2025-01-30, while Claude 3 Sonnet was released on 2024-02-29.

o3-mini is 11 months newer than Claude 3 Sonnet.

o3-mini

Jan 30, 2025

1.2 years ago

11mo newer
Claude 3 Sonnet

Feb 29, 2024

2.1 years ago

Knowledge Cutoff

When training data ends

o3-mini has a documented knowledge cutoff of 2023-09-30, while Claude 3 Sonnet's cutoff date is not specified.

We can confirm o3-mini's training data extends to 2023-09-30, but cannot make a direct comparison without Claude 3 Sonnet's cutoff date.

o3-mini

Sep 2023

Claude 3 Sonnet

—

Provider Availability

o3-mini is available from Azure, OpenAI. Claude 3 Sonnet is available from Anthropic, Bedrock, Google.

o3-mini

azure logo
Azure
Input Price:Input: $1.10/1MOutput Price:Output: $4.40/1M
openai logo
OpenAI
Input Price:Input: $1.10/1MOutput Price:Output: $4.40/1M

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

OpenAI
Less expensive input tokens
Less expensive output tokens
Higher GPQA score (77.2% vs 40.4%)
Higher MATH score (97.9% vs 43.1%)
Higher MGSM score (92.0% vs 83.5%)
Higher MMLU score (86.9% vs 79.0%)
Anthropic
Supports multimodal inputs

Detailed Comparison

AI Model Comparison Table
Feature
OpenAI
o3-mini
Anthropic
Claude 3 Sonnet

FAQ

Common questions about o3-mini vs Claude 3 Sonnet

o3-mini significantly outperforms across most benchmarks. o3-mini is made by OpenAI and Claude 3 Sonnet is made by Anthropic. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.
o3-mini scores COLLIE: 98.7%, MATH: 97.9%, IFEval: 93.9%, MGSM: 92.0%, AIME 2024: 87.3%. Claude 3 Sonnet scores ARC-C: 93.2%, GSM8k: 92.3%, HellaSwag: 89.0%, MGSM: 83.5%, BIG-Bench Hard: 82.9%.
o3-mini is 2.7x cheaper for input tokens. o3-mini costs $1.10/M input and $4.40/M output via azure. Claude 3 Sonnet costs $3.00/M input and $15.00/M output via anthropic.
o3-mini 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 ($1.10 vs $3.00/M), multimodal support (no vs yes). See the full comparison above for benchmark-by-benchmark results.
o3-mini is developed by OpenAI and Claude 3 Sonnet is developed by Anthropic.