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Claude 3 Opus vs GPT-6 Rosalind

Comparing Claude 3 Opus and GPT-6 Rosalind across benchmarks, pricing, and capabilities.

Anthropic · OpenAI · Updated for 2026

Which is better?

Claude 3 Opus and GPT-6 Rosalind trade strengths across price, capabilities, and technical limits. The better choice depends on the workload.

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

Choose Claude 3 Opus

  • you want predictable pricing at $15.00/M input and $75.00/M output

Choose GPT-6 Rosalind

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

At a glance

The differences that matter most.

Claude 3 Opus
Anthropic
GPT-6 Rosalind
OpenAI
Benchmark wins
—
—
Input price
$15.00 / M
$15.00 / M
Output price
$75.00 / M
$75.00 / M
Context window
200,000
—

Individual benchmarks

11 reported for Claude 3 Opus · 0 for GPT-6 Rosalind

No common benchmarks found

Claude 3 Opus 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

For input processing, Claude 3 Opus ($15.00/1M tokens) costs the same as GPT-6 Rosalind ($15.00/1M tokens).

For output processing, Claude 3 Opus ($75.00/1M tokens) costs the same as GPT-6 Rosalind ($75.00/1M tokens).

In conclusion, Claude 3 Opus and GPT-6 Rosalind cost the same.*

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

Lowest available price from all providers
Mon Nov 02 2026 • llm-stats.com
Anthropic
Claude 3 Opus
Input tokens$15.00
Output tokens$75.00
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 3 Opus specifies input context (200,000 tokens). Only Claude 3 Opus specifies output context (200,000 tokens).

Anthropic
Claude 3 Opus
Input200,000 tokens
Output200,000 tokens
OpenAI
GPT-6 Rosalind
Input- tokens
Output- tokens
Mon Nov 02 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Both Claude 3 Opus and GPT-6 Rosalind support multimodal inputs.

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

Claude 3 Opus

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 3 Opus

Proprietary

Closed source

GPT-6 Rosalind

Proprietary

Closed source

Release Timeline

When each model was launched

Claude 3 Opus was released on 2024-02-29, while GPT-6 Rosalind was released on 2026-10-30.

GPT-6 Rosalind is 32 months newer than Claude 3 Opus.

Claude 3 Opus

Feb 29, 2024

2.7 years ago

GPT-6 Rosalind

Oct 30, 2026

2 days ago

2.7yr 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 Opus is available from Anthropic, Bedrock, Google. GPT-6 Rosalind is available from OpenAI.

Claude 3 Opus

anthropic logo
Anthropic
Input Price:Input: $15.00/1MOutput Price:Output: $75.00/1M
bedrock logo
AWS Bedrock
Input Price:Input: $15.00/1MOutput Price:Output: $75.00/1M
google logo
Google
Input Price:Input: $15.00/1MOutput Price:Output: $75.00/1M

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 3 Opus and GPT-6 Rosalind side-by-side, then vote on the output you prefer.

Claude 3 Opus
✓ Preferred
GPT-6 Rosalind
Open in Playground

FAQ

Common questions about Claude 3 Opus vs GPT-6 Rosalind.

Which is better, Claude 3 Opus or GPT-6 Rosalind?

Claude 3 Opus (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 3 Opus compare to GPT-6 Rosalind in benchmarks?

Claude 3 Opus scores ARC-C: 96.4%, HellaSwag: 95.4%, GSM8k: 95.0%, MGSM: 90.7%, BIG-Bench Hard: 86.8%.

Is Claude 3 Opus cheaper than GPT-6 Rosalind?

Both models cost $15.00 per million input tokens.

What are the context window sizes for Claude 3 Opus and GPT-6 Rosalind?

Claude 3 Opus supports 200K 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.

Who makes Claude 3 Opus and GPT-6 Rosalind?

Claude 3 Opus is developed by Anthropic and GPT-6 Rosalind is developed by OpenAI.

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