GPT-6 Rosalind vs GPT-6.1 Terra
Comparing GPT-6 Rosalind and GPT-6.1 Terra across benchmarks, pricing, and capabilities.
OpenAI · OpenAI · Updated for 2026
Which is better?
GPT-6 Rosalind and GPT-6.1 Terra trade strengths across price, capabilities, and technical limits. The better choice depends on the workload.
On price, GPT-6.1 Terra is roughly 15.0x 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 Rosalind
- you want the most recent training data — it shipped Oct 2026
Choose GPT-6.1 Terra
- cost matters — it's about 15.0x cheaper per token
At a glance
The differences that matter most.
Individual benchmarks
0 reported for GPT-6 Rosalind · 8 for GPT-6.1 Terra
GPT-6 Rosalind and GPT-6.1 Terradon'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, GPT-6 Rosalind ($15.00/1M tokens) is 15.0x more expensive than GPT-6.1 Terra ($1.00/1M tokens).
For output processing, GPT-6 Rosalind ($75.00/1M tokens) is 15.0x more expensive than GPT-6.1 Terra ($5.00/1M tokens).
In conclusion, GPT-6 Rosalind is more expensive than GPT-6.1 Terra.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
Only GPT-6.1 Terra specifies input context (1,050,000 tokens). Only GPT-6.1 Terra specifies output context (128,000 tokens).
Input capabilities
Documented input modalities across available providers
Both GPT-6 Rosalind and GPT-6.1 Terra support multimodal inputs.
They are both capable of processing various types of data, offering versatility in application.
GPT-6 Rosalind
GPT-6.1 Terra
License
Usage and distribution terms
Both models are licensed under proprietary licenses.
Both models have usage restrictions defined by their respective organizations.
Proprietary
Closed source
Proprietary
Closed source
Release Timeline
When each model was launched
GPT-6 Rosalind was released on 2026-10-30, while GPT-6.1 Terra was released on 2026-10-26.
GPT-6 Rosalind is 0 month newer than GPT-6.1 Terra.
Oct 30, 2026
2 days ago
4d newerOct 26, 2026
6 days ago
Knowledge Cutoff
When training data ends
GPT-6.1 Terra has a documented knowledge cutoff of 2026-06-01, while GPT-6 Rosalind's cutoff date is not specified.
We can confirm GPT-6.1 Terra's training data extends to 2026-06-01, but cannot make a direct comparison without GPT-6 Rosalind's cutoff date.
—
Jun 2026
Provider Availability
GPT-6 Rosalind is available from OpenAI. GPT-6.1 Terra is available from OpenAI.
GPT-6 Rosalind
GPT-6.1 Terra
Outputs Comparison
Judge for yourself.
Run your own prompts against GPT-6 Rosalind and GPT-6.1 Terra side-by-side, then vote on the output you prefer.
FAQ
Common questions about GPT-6 Rosalind vs GPT-6.1 Terra.