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Claude Opus 5 vs GPT-6 Rosalind

Comparing Claude Opus 5 and GPT-6 Rosalind across benchmarks, pricing, and capabilities.

Anthropic · OpenAI · Updated for 2026

Which is better?

Claude Opus 5 and GPT-6 Rosalind trade strengths across price, capabilities, and technical limits. The better choice depends on the workload.

On price, Claude Opus 5 is roughly 3.0x 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 Opus 5

  • cost matters — it's about 3.0x 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 Opus 5
Anthropic
GPT-6 Rosalind
OpenAI
Benchmark wins
—
—
Input price
$5.00 / M
$15.00 / M
Output price
$25.00 / M
$75.00 / M
Context window
1,000,000
—

Individual benchmarks

14 reported for Claude Opus 5 · 0 for GPT-6 Rosalind

No common benchmarks found

Claude Opus 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 Opus 5 costs less

For input processing, Claude Opus 5 ($5.00/1M tokens) is 3.0x cheaper than GPT-6 Rosalind ($15.00/1M tokens).

For output processing, Claude Opus 5 ($25.00/1M tokens) is 3.0x cheaper than GPT-6 Rosalind ($75.00/1M tokens).

In conclusion, GPT-6 Rosalind is more expensive than Claude Opus 5.*

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

Lowest available price from all providers
Fri Nov 06 2026 • llm-stats.com
Anthropic
Claude Opus 5
Input tokens$5.00
Output tokens$25.00
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 Opus 5 specifies input context (1,000,000 tokens). Only Claude Opus 5 specifies output context (128,000 tokens).

Anthropic
Claude Opus 5
Input1,000,000 tokens
Output128,000 tokens
OpenAI
GPT-6 Rosalind
Input- tokens
Output- tokens
Fri Nov 06 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Both Claude Opus 5 and GPT-6 Rosalind support multimodal inputs.

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

Claude Opus 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 Opus 5

Proprietary

Closed source

GPT-6 Rosalind

Proprietary

Closed source

Release Timeline

When each model was launched

Claude Opus 5 was released on 2026-07-24, while GPT-6 Rosalind was released on 2026-10-30.

GPT-6 Rosalind is 3 months newer than Claude Opus 5.

Claude Opus 5

Jul 24, 2026

3 months ago

GPT-6 Rosalind

Oct 30, 2026

1 weeks ago

3mo 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 Opus 5 is available from Anthropic, DeepInfra. GPT-6 Rosalind is available from OpenAI.

Claude Opus 5

anthropic logo
Anthropic
Input Price:Input: $5.00/1MOutput Price:Output: $25.00/1M
deepinfra logo
Deepinfra
Input Price:Input: $5.00/1MOutput Price:Output: $25.00/1M

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 Opus 5 and GPT-6 Rosalind side-by-side, then vote on the output you prefer.

Claude Opus 5
✓ Preferred
GPT-6 Rosalind
Open in Playground

FAQ

Common questions about Claude Opus 5 vs GPT-6 Rosalind.

Which is better, Claude Opus 5 or GPT-6 Rosalind?

Claude Opus 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 Opus 5 compare to GPT-6 Rosalind in benchmarks?

Claude Opus 5 scores BrowseComp: 90.8%, BioMysteryBench: 90.1%, OSWorld 2.0: 70.6%, DeepSWE 1.1: 68.8%, Humanity's Last Exam: 64.7%.

Is Claude Opus 5 cheaper than GPT-6 Rosalind?

Claude Opus 5 is 3.0x cheaper for input tokens. Claude Opus 5 costs $5.00/M input and $25.00/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 Opus 5 and GPT-6 Rosalind?

Claude Opus 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 Opus 5 and GPT-6 Rosalind?

Key differences include input pricing ($5.00 vs $15.00/M). See the full comparison above for benchmark-by-benchmark results.

Who makes Claude Opus 5 and GPT-6 Rosalind?

Claude Opus 5 is developed by Anthropic and GPT-6 Rosalind is developed by OpenAI.

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