DeepSeek-V2.5 vs GPT-6 Rosalind
Comparing DeepSeek-V2.5 and GPT-6 Rosalind across benchmarks, pricing, and capabilities.
DeepSeek · OpenAI · Updated for 2026
Which is better?
DeepSeek-V2.5 and GPT-6 Rosalind trade strengths across price, capabilities, and technical limits. The better choice depends on the workload.
On price, DeepSeek-V2.5 is roughly 171.4x 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 DeepSeek-V2.5
- cost matters — it's about 171.4x cheaper per token
- you need open weights you can self-host or fine-tune
Choose GPT-6 Rosalind
- you want the most recent training data — it shipped Oct 2026
At a glance
The differences that matter most.
Individual benchmarks
15 reported for DeepSeek-V2.5 · 0 for GPT-6 Rosalind
DeepSeek-V2.5 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
For input processing, DeepSeek-V2.5 ($0.14/1M tokens) is 107.1x cheaper than GPT-6 Rosalind ($15.00/1M tokens).
For output processing, DeepSeek-V2.5 ($0.28/1M tokens) is 267.9x cheaper than GPT-6 Rosalind ($75.00/1M tokens).
In conclusion, GPT-6 Rosalind is more expensive than DeepSeek-V2.5.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
Only DeepSeek-V2.5 specifies input context (8,192 tokens). Only DeepSeek-V2.5 specifies output context (8,192 tokens).
Input capabilities
Documented input modalities across available providers
GPT-6 Rosalind supports multimodal inputs, whereas DeepSeek-V2.5 does not.
GPT-6 Rosalind can handle both text and other forms of data like images, making it suitable for multimodal applications.
DeepSeek-V2.5
GPT-6 Rosalind
License
Usage and distribution terms
DeepSeek-V2.5 is licensed under deepseek, while GPT-6 Rosalind uses a proprietary license.
License differences may affect how you can use these models in commercial or open-source projects.
deepseek
Open weights
Proprietary
Closed source
Release Timeline
When each model was launched
DeepSeek-V2.5 was released on 2024-05-08, while GPT-6 Rosalind was released on 2026-10-30.
GPT-6 Rosalind is 30 months newer than DeepSeek-V2.5.
May 8, 2024
2.5 years ago
Oct 30, 2026
3 days ago
2.5yr newerKnowledge Cutoff
When training data ends
Neither model specifies a knowledge cutoff date.
Unable to compare the recency of their training data.
Provider Availability
DeepSeek-V2.5 is available from DeepSeek, DeepInfra, Hyperbolic. GPT-6 Rosalind is available from OpenAI.
DeepSeek-V2.5
GPT-6 Rosalind
Outputs Comparison
Judge for yourself.
Run your own prompts against DeepSeek-V2.5 and GPT-6 Rosalind side-by-side, then vote on the output you prefer.
FAQ
Common questions about DeepSeek-V2.5 vs GPT-6 Rosalind.