Model Comparison

ChatGPT-4o Latest vs Claude Haiku 4.5

ChatGPT-4o Latest significantly outperforms across most benchmarks. Claude Haiku 4.5 is 2.2x cheaper per token.

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Performance Benchmarks

Comparative analysis across standard metrics

1 benchmarks

ChatGPT-4o Latest outperforms in 1 benchmarks (GPQA), while Claude Haiku 4.5 is better at 0 benchmarks.

ChatGPT-4o Latest significantly outperforms across most benchmarks.

Mon Jun 01 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

Claude Haiku 4.5 costs less

For input processing, ChatGPT-4o Latest ($2.50/1M tokens) is 2.5x more expensive than Claude Haiku 4.5 ($1.00/1M tokens).

For output processing, ChatGPT-4o Latest ($10.00/1M tokens) is 2.0x more expensive than Claude Haiku 4.5 ($5.00/1M tokens).

In conclusion, ChatGPT-4o Latest is more expensive than Claude Haiku 4.5.*

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

Lowest available price from all providers
Mon Jun 01 2026 • llm-stats.com
OpenAI
ChatGPT-4o Latest
Input tokens$2.50
Output tokens$10.00
Best providerOpenAI
Anthropic
Claude Haiku 4.5
Input tokens$1.00
Output tokens$5.00
Best providerAnthropic
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

Claude Haiku 4.5 accepts 200,000 input tokens compared to ChatGPT-4o Latest's 128,000 tokens. Claude Haiku 4.5 can generate longer responses up to 64,000 tokens, while ChatGPT-4o Latest is limited to 16,384 tokens.

OpenAI
ChatGPT-4o Latest
Input128,000 tokens
Output16,384 tokens
Anthropic
Claude Haiku 4.5
Input200,000 tokens
Output64,000 tokens
Mon Jun 01 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both ChatGPT-4o Latest and Claude Haiku 4.5 support multimodal inputs.

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

ChatGPT-4o Latest

Text
Images
Audio
Video

Claude Haiku 4.5

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.

ChatGPT-4o Latest

Proprietary

Closed source

Claude Haiku 4.5

Proprietary

Closed source

Release Timeline

When each model was launched

ChatGPT-4o Latest was released on 2024-05-13, while Claude Haiku 4.5 was released on 2025-10-15.

Claude Haiku 4.5 is 17 months newer than ChatGPT-4o Latest.

ChatGPT-4o Latest

May 13, 2024

2.1 years ago

Claude Haiku 4.5

Oct 15, 2025

7 months ago

1.4yr newer

Knowledge Cutoff

When training data ends

Claude Haiku 4.5 has a documented knowledge cutoff of 2025-02-01, while ChatGPT-4o Latest's cutoff date is not specified.

We can confirm Claude Haiku 4.5's training data extends to 2025-02-01, but cannot make a direct comparison without ChatGPT-4o Latest's cutoff date.

ChatGPT-4o Latest

—

Claude Haiku 4.5

Feb 2025

Provider Availability

ChatGPT-4o Latest is available from OpenAI. Claude Haiku 4.5 is available from Anthropic, Vertex AI.

ChatGPT-4o Latest

openai logo
OpenAI
Input Price:Input: $2.50/1MOutput Price:Output: $10.00/1M

Claude Haiku 4.5

anthropic logo
Anthropic
Input Price:Input: $1.00/1MOutput Price:Output: $5.00/1M
vertex logo
Unknown Organization
Input Price:Input: $1.00/1MOutput Price:Output: $5.00/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Key Takeaways

OpenAI
Higher GPQA score (84.0% vs 73.0%)
Anthropic
Larger context window (200,000 tokens)
Less expensive input tokens
Less expensive output tokens

Detailed Comparison

AI Model Comparison Table
Feature
OpenAI
ChatGPT-4o Latest
Anthropic
Claude Haiku 4.5

FAQ

Common questions about ChatGPT-4o Latest vs Claude Haiku 4.5.

Which is better, ChatGPT-4o Latest or Claude Haiku 4.5?

ChatGPT-4o Latest significantly outperforms across most benchmarks. ChatGPT-4o Latest is made by OpenAI and Claude Haiku 4.5 is made by Anthropic. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does ChatGPT-4o Latest compare to Claude Haiku 4.5 in benchmarks?

ChatGPT-4o Latest scores GPQA: 84.0%. Claude Haiku 4.5 scores Tau2 Retail: 83.2%, MMMLU: 83.0%, Tau2 Telecom: 83.0%, AIME 2025: 80.7%, SWE-Bench Verified: 73.3%.

Is ChatGPT-4o Latest cheaper than Claude Haiku 4.5?

Claude Haiku 4.5 is 2.5x cheaper for input tokens. ChatGPT-4o Latest costs $2.50/M input and $10.00/M output via openai. Claude Haiku 4.5 costs $1.00/M input and $5.00/M output via anthropic.

What are the context window sizes for ChatGPT-4o Latest and Claude Haiku 4.5?

ChatGPT-4o Latest supports 128K tokens and Claude Haiku 4.5 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 ChatGPT-4o Latest and Claude Haiku 4.5?

Key differences include context window (128K vs 200K), input pricing ($2.50 vs $1.00/M). See the full comparison above for benchmark-by-benchmark results.

Who makes ChatGPT-4o Latest and Claude Haiku 4.5?

ChatGPT-4o Latest is developed by OpenAI and Claude Haiku 4.5 is developed by Anthropic.