Model Comparison

Claude 3 Haiku vs o3-pro

Comparing Claude 3 Haiku and o3-pro across benchmarks, pricing, and capabilities.

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Performance Benchmarks

Comparative analysis across standard metrics

No common benchmarks found

Claude 3 Haiku and o3-pro don't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

Claude 3 Haiku costs less

For input processing, Claude 3 Haiku ($0.25/1M tokens) is 80.0x cheaper than o3-pro ($20.00/1M tokens).

For output processing, Claude 3 Haiku ($1.25/1M tokens) is 64.0x cheaper than o3-pro ($80.00/1M tokens).

In conclusion, o3-pro is more expensive than Claude 3 Haiku.*

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

Lowest available price from all providers

Mon May 25 2026 • llm-stats.com

Claude 3 Haiku

Input tokens$0.25

Output tokens$1.25

Best providerAnthropic

o3-pro

Input tokens$20.00

Output tokens$80.00

Best providerOpenAI

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 Haiku can generate longer responses up to 200,000 tokens, while o3-pro is limited to 100,000 tokens.

Claude 3 Haiku

Input200,000 tokens

Output200,000 tokens

o3-pro

Input200,000 tokens

Output100,000 tokens

Mon May 25 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Claude 3 Haiku and o3-pro support multimodal inputs.

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

Claude 3 Haiku

Text

Images

Audio

Video

o3-pro

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 Haiku

Proprietary

Closed source

o3-pro

Proprietary

Closed source

Release Timeline

When each model was launched

Claude 3 Haiku was released on 2024-03-13, while o3-pro was released on 2025-06-10.

o3-pro is 15 months newer than Claude 3 Haiku.

Claude 3 Haiku

Mar 13, 2024

2.2 years ago

o3-pro

Jun 10, 2025

11 months ago

1.2yr newer

Knowledge Cutoff

When training data ends

o3-pro has a documented knowledge cutoff of 2024-05-31, while Claude 3 Haiku's cutoff date is not specified.

We can confirm o3-pro's training data extends to 2024-05-31, but cannot make a direct comparison without Claude 3 Haiku's cutoff date.

Claude 3 Haiku

—

o3-pro

May 2024

Provider Availability

Claude 3 Haiku is available from Anthropic, Bedrock, Google. o3-pro is available from OpenAI.

Claude 3 Haiku

Anthropic

Input Price:Input: $0.25/1MOutput Price:Output: $1.25/1M

AWS Bedrock

Input Price:Input: $0.25/1MOutput Price:Output: $1.25/1M

Google

Input Price:Input: $0.25/1MOutput Price:Output: $1.25/1M

o3-pro

OpenAI

Input Price:Input: $20.00/1MOutput Price:Output: $80.00/1M

* Prices shown are per million tokens

Outputs Comparison

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Key Takeaways

Claude 3 Haiku

View details

Anthropic

Less expensive input tokens

Less expensive output tokens

o3-pro

View details

OpenAI

No standout differentiators in the data we have for this pair.

Detailed Comparison

AI Model Comparison Table
Feature	Claude 3 Haiku	o3-pro

FAQ

Common questions about Claude 3 Haiku vs o3-pro.

Which is better, Claude 3 Haiku or o3-pro?

Claude 3 Haiku (Anthropic) and o3-pro (OpenAI) each have strengths in different areas. Compare their benchmark scores, pricing, context windows, and capabilities above to determine which fits your needs.

How does Claude 3 Haiku compare to o3-pro in benchmarks?

Claude 3 Haiku scores ARC-C: 89.2%, GSM8k: 88.9%, HellaSwag: 85.9%, DROP: 78.4%, HumanEval: 75.9%.

Is Claude 3 Haiku cheaper than o3-pro?

Claude 3 Haiku is 80.0x cheaper for input tokens. Claude 3 Haiku costs $0.25/M input and $1.25/M output via anthropic. o3-pro costs $20.00/M input and $80.00/M output via openai.

What are the context window sizes for Claude 3 Haiku and o3-pro?

Claude 3 Haiku supports 200K tokens and o3-pro supports 200K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Claude 3 Haiku and o3-pro?

Key differences include input pricing ($0.25 vs $20.00/M). See the full comparison above for benchmark-by-benchmark results.

Who makes Claude 3 Haiku and o3-pro?

Claude 3 Haiku is developed by Anthropic and o3-pro is developed by OpenAI.