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Claude Haiku 5.5 vs GPT-6 Rosalind

Comparing Claude Haiku 5.5 and GPT-6 Rosalind across benchmarks, pricing, and capabilities.

Anthropic · OpenAI · Updated for 2026

Which is better?

Claude Haiku 5.5 and GPT-6 Rosalind trade strengths across price, capabilities, and technical limits. The better choice depends on the workload.

On price, Claude Haiku 5.5 is roughly 150.0x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.

Choose Claude Haiku 5.5

  • cost matters — it's about 150.0x cheaper per token

Choose GPT-6 Rosalind

  • you want the most recent training data — it shipped Oct 2026

At a glance

The differences that matter most.

Claude Haiku 5.5
Anthropic
GPT-6 Rosalind
OpenAI
Benchmark wins
—
—
Input price
$0.10 / M
$15.00 / M
Output price
$0.50 / M
$75.00 / M
Context window
1,000,000
—

Individual benchmarks

36 reported for Claude Haiku 5.5 · 0 for GPT-6 Rosalind

No common benchmarks found

Claude Haiku 5.5 and GPT-6 Rosalinddon't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.

Human preference

Blind head-to-head votes and playground preference scores

Pricing Analysis

Price comparison per million tokens

Claude Haiku 5.5 costs less

For input processing, Claude Haiku 5.5 ($0.10/1M tokens) is 150.0x cheaper than GPT-6 Rosalind ($15.00/1M tokens).

For output processing, Claude Haiku 5.5 ($0.50/1M tokens) is 150.0x cheaper than GPT-6 Rosalind ($75.00/1M tokens).

In conclusion, GPT-6 Rosalind is more expensive than Claude Haiku 5.5.*

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

Lowest available price from all providers
Tue Nov 10 2026 • llm-stats.com
Anthropic
Claude Haiku 5.5
Input tokens$0.10
Output tokens$0.50
Best providerAnthropic
OpenAI
GPT-6 Rosalind
Input tokens$15.00
Output tokens$75.00
Best providerOpenAI
Notice missing or incorrect data?

Context Window

Maximum input and output token capacity

Only Claude Haiku 5.5 specifies input context (1,000,000 tokens). Only Claude Haiku 5.5 specifies output context (128,000 tokens).

Anthropic
Claude Haiku 5.5
Input1,000,000 tokens
Output128,000 tokens
OpenAI
GPT-6 Rosalind
Input- tokens
Output- tokens
Tue Nov 10 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Both Claude Haiku 5.5 and GPT-6 Rosalind support multimodal inputs.

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

Claude Haiku 5.5

Text
Images
Audio
Video

GPT-6 Rosalind

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 Haiku 5.5

Proprietary

Closed source

GPT-6 Rosalind

Proprietary

Closed source

Release Timeline

When each model was launched

Claude Haiku 5.5 was released on 2026-10-07, while GPT-6 Rosalind was released on 2026-10-30.

GPT-6 Rosalind is 1 month newer than Claude Haiku 5.5.

Claude Haiku 5.5

Oct 7, 2026

1 months ago

GPT-6 Rosalind

Oct 30, 2026

1 weeks ago

3w newer

Knowledge Cutoff

When training data ends

Claude Haiku 5.5 has a documented knowledge cutoff of 2026-06-01, while GPT-6 Rosalind's cutoff date is not specified.

We can confirm Claude Haiku 5.5's training data extends to 2026-06-01, but cannot make a direct comparison without GPT-6 Rosalind's cutoff date.

Claude Haiku 5.5

Jun 2026

GPT-6 Rosalind

—

Provider Availability

Claude Haiku 5.5 is available from Anthropic. GPT-6 Rosalind is available from OpenAI.

Claude Haiku 5.5

anthropic logo
Anthropic
Input Price:Input: $0.10/1MOutput Price:Output: $0.50/1M

GPT-6 Rosalind

openai logo
OpenAI
Input Price:Input: $15.00/1MOutput Price:Output: $75.00/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?

Judge for yourself.

Run your own prompts against Claude Haiku 5.5 and GPT-6 Rosalind side-by-side, then vote on the output you prefer.

Claude Haiku 5.5
✓ Preferred
GPT-6 Rosalind
Open in Playground

FAQ

Common questions about Claude Haiku 5.5 vs GPT-6 Rosalind.

Which is better, Claude Haiku 5.5 or GPT-6 Rosalind?

Claude Haiku 5.5 (Anthropic) and GPT-6 Rosalind (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 Haiku 5.5 compare to GPT-6 Rosalind in benchmarks?

Claude Haiku 5.5 scores Global-MMLU: 87.8%, MILU: 87.6%, BenchCAD (with Python tool): 87.0%, Chartography: 86.2%, SWE-bench Multilingual: 83.7%.

Is Claude Haiku 5.5 cheaper than GPT-6 Rosalind?

Claude Haiku 5.5 is 150.0x cheaper for input tokens. Claude Haiku 5.5 costs $0.10/M input and $0.50/M output via anthropic. GPT-6 Rosalind costs $15.00/M input and $75.00/M output via openai.

What are the context window sizes for Claude Haiku 5.5 and GPT-6 Rosalind?

Claude Haiku 5.5 supports 1.0M tokens and GPT-6 Rosalind supports an unknown number of tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Claude Haiku 5.5 and GPT-6 Rosalind?

Key differences include input pricing ($0.10 vs $15.00/M). See the full comparison above for benchmark-by-benchmark results.

Who makes Claude Haiku 5.5 and GPT-6 Rosalind?

Claude Haiku 5.5 is developed by Anthropic and GPT-6 Rosalind is developed by OpenAI.

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