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GPT-6 Luna vs GPT-6 Rosalind

Comparing GPT-6 Luna and GPT-6 Rosalind across benchmarks, pricing, and capabilities.

OpenAI · OpenAI · Updated for 2026

Which is better?

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

On price, GPT-6 Luna 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 GPT-6 Luna

  • 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.

GPT-6 Luna
OpenAI
GPT-6 Rosalind
OpenAI
Benchmark wins
—
—
Input price
$0.10 / M
$15.00 / M
Output price
$0.50 / M
$75.00 / M
Context window
1,050,000
—

Individual benchmarks

5 reported for GPT-6 Luna · 0 for GPT-6 Rosalind

No common benchmarks found

GPT-6 Luna 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

GPT-6 Luna costs less

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

For output processing, GPT-6 Luna ($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 GPT-6 Luna.*

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

Lowest available price from all providers
Sat Nov 07 2026 • llm-stats.com
OpenAI
GPT-6 Luna
Input tokens$0.10
Output tokens$0.50
Best providerOpenAI
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 GPT-6 Luna specifies input context (1,050,000 tokens). Only GPT-6 Luna specifies output context (128,000 tokens).

OpenAI
GPT-6 Luna
Input1,050,000 tokens
Output128,000 tokens
OpenAI
GPT-6 Rosalind
Input- tokens
Output- tokens
Sat Nov 07 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Both GPT-6 Luna and GPT-6 Rosalind support multimodal inputs.

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

GPT-6 Luna

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.

GPT-6 Luna

Proprietary

Closed source

GPT-6 Rosalind

Proprietary

Closed source

Release Timeline

When each model was launched

GPT-6 Luna was released on 2026-09-22, while GPT-6 Rosalind was released on 2026-10-30.

GPT-6 Rosalind is 1 month newer than GPT-6 Luna.

GPT-6 Luna

Sep 22, 2026

1 months ago

GPT-6 Rosalind

Oct 30, 2026

1 weeks ago

1mo newer

Knowledge Cutoff

When training data ends

GPT-6 Luna has a documented knowledge cutoff of 2026-05-18, while GPT-6 Rosalind's cutoff date is not specified.

We can confirm GPT-6 Luna's training data extends to 2026-05-18, but cannot make a direct comparison without GPT-6 Rosalind's cutoff date.

GPT-6 Luna

May 2026

GPT-6 Rosalind

—

Provider Availability

GPT-6 Luna is available from OpenAI. GPT-6 Rosalind is available from OpenAI.

GPT-6 Luna

openai logo
OpenAI
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 GPT-6 Luna and GPT-6 Rosalind side-by-side, then vote on the output you prefer.

GPT-6 Luna
✓ Preferred
GPT-6 Rosalind
Open in Playground

FAQ

Common questions about GPT-6 Luna vs GPT-6 Rosalind.

Which is better, GPT-6 Luna or GPT-6 Rosalind?

GPT-6 Luna (OpenAI) 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 GPT-6 Luna compare to GPT-6 Rosalind in benchmarks?

GPT-6 Luna scores DeepSWE 1.1: 66.6%, OSWorld 2.0: 52.7%, Agents' Last Exam: 50.9%, FrontierCode 1.1: 42.4%, AutomationBench v1.0.6: 20.7%.

Is GPT-6 Luna cheaper than GPT-6 Rosalind?

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

What are the context window sizes for GPT-6 Luna and GPT-6 Rosalind?

GPT-6 Luna supports 1.1M 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 GPT-6 Luna 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.

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