GPT-6 Rosalind vs LongCat-2.5
Comparing GPT-6 Rosalind and LongCat-2.5 across benchmarks, pricing, and capabilities.
OpenAI · Meituan · Updated for 2026
Which is better?
GPT-6 Rosalind and LongCat-2.5 trade strengths across price, capabilities, and technical limits. The better choice depends on the workload.
On price, LongCat-2.5 is roughly 57.1x 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 predictable pricing at $15.00/M input and $75.00/M output
Choose LongCat-2.5
- cost matters — it's about 57.1x cheaper per token
- you want the most recent training data — it shipped Nov 2026
At a glance
The differences that matter most.
Individual benchmarks
0 reported for GPT-6 Rosalind · 23 for LongCat-2.5
GPT-6 Rosalind and LongCat-2.5don'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 50.0x more expensive than LongCat-2.5 ($0.30/1M tokens).
For output processing, GPT-6 Rosalind ($75.00/1M tokens) is 62.5x more expensive than LongCat-2.5 ($1.20/1M tokens).
In conclusion, GPT-6 Rosalind is more expensive than LongCat-2.5.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
Only LongCat-2.5 specifies input context (1,048,576 tokens). Only LongCat-2.5 specifies output context (131,072 tokens).
Input capabilities
Documented input modalities across available providers
Both GPT-6 Rosalind and LongCat-2.5 support multimodal inputs.
They are both capable of processing various types of data, offering versatility in application.
GPT-6 Rosalind
LongCat-2.5
Release Timeline
When each model was launched
GPT-6 Rosalind was released on 2026-10-30, while LongCat-2.5 was released on 2026-11-01.
LongCat-2.5 is 0 month newer than GPT-6 Rosalind.
Oct 30, 2026
2 days ago
Nov 1, 2026
0 days ago
2d newerKnowledge Cutoff
When training data ends
Neither model specifies a knowledge cutoff date.
Unable to compare the recency of their training data.
Provider Availability
GPT-6 Rosalind is available from OpenAI. LongCat-2.5 is available from Meituan.
GPT-6 Rosalind
LongCat-2.5
Outputs Comparison
Judge for yourself.
Run your own prompts against GPT-6 Rosalind and LongCat-2.5 side-by-side, then vote on the output you prefer.
FAQ
Common questions about GPT-6 Rosalind vs LongCat-2.5.