Intelligence
n/a
GPT-5.5 Pro
wins
40.8
DeepSeek V4 Pro
GPT-5.5 Pro vs DeepSeek V4 Pro
GPT-5.5 Pro from OpenAI and DeepSeek V4 Pro from DeepSeek are shown side by side so you can compare pricing, model IDs, context and output limits, modalities, tool use, release details, and benchmark results where data is available.
GPT-5.5 ProOpenAI
DeepSeek V4 ProDeepSeek
Basic Information
Name
GPT-5.5 ProGPT-5.5 Pro
Model id
GPT-5.5 Progpt-5.5-pro
Intro
GPT-5.5 ProGPT-5.5 Pro is the higher-compute variant of OpenAI’s GPT-5.5 generation, intended for the hardest professional tasks where answer quality matters more than speed. OpenAI materials describe the Pro tier as thinking harder for greater precision across coding, research, data analysis, and document-heavy work. It should be positioned for difficult reasoning and professional-grade deliverables rather than routine chat.
Author
GPT-5.5 ProOpenAI
Released date
GPT-5.5 Pro2026-04-23
Name
DeepSeek V4 ProDeepSeek V4 Pro
Model id
DeepSeek V4 Prodeepseek-v4-pro
Intro
DeepSeek V4 ProDeepSeek V4 Pro is described as a large-scale Mixture-of-Experts model with 1.6T total parameters and 49B activated parameters, while keeping a 1M-token context window for very large inputs. Its model cards emphasize advanced reasoning, coding, and long-horizon agent workflows rather than simple chat. The Pro variant is the capability-oriented member of the V4 family, making it better suited to full-codebase analysis, large research synthesis, and multi-step automation where depth matters more than the lowest possible latency.
Author
DeepSeek V4 ProDeepSeek
Released date
DeepSeek V4 Pro2026-04-24
Pricing
Input
GPT-5.5 Pro$30/M
Output
GPT-5.5 Pro$180/M
Cached input
GPT-5.5 Pron/a
Input
DeepSeek V4 Pro$1.8/M
Output
DeepSeek V4 Pro$3.5/M
Cached input
DeepSeek V4 Pro$0.015/M
Context & Output
Context length
GPT-5.5 Pro1.1M
Max output tokens
GPT-5.5 Pro128K
Context length
DeepSeek V4 Pro1M
Max output tokens
DeepSeek V4 Pro384K
Capabilities
Reasoning
GPT-5.5 Pro
Knowledge
GPT-5.5 Pro2025-12-01
Attachment
GPT-5.5 Pro
Input modalities
GPT-5.5 ProImage, PDF, Text
Output modalities
GPT-5.5 ProText
Temperature
GPT-5.5 Pro
Tool use
GPT-5.5 Pro
Reasoning
DeepSeek V4 Pro
Knowledge
DeepSeek V4 Pro2025-05-01
Attachment
DeepSeek V4 Pro
Input modalities
DeepSeek V4 ProText
Output modalities
DeepSeek V4 ProText
Temperature
DeepSeek V4 Pro
Tool use
DeepSeek V4 Pro
Benchmark
Coding
n/a
GPT-5.5 Pro
wins
43.2
DeepSeek V4 Pro
GPT-5.5 ProOpenAI
DeepSeek V4 ProDeepSeek
Knowledge & Reasoning
GPQA
n/a
HLE
n/a
GPQA
wins90.5%
HLE
wins33.5%
Coding
SciCode
n/a
Terminal-Bench Hard
n/a
SciCode
wins46.4%
Terminal-Bench Hard
wins41.7%
Instruction Following & Agent Tasks
IFBench
n/a
AA-LCR
n/a
Tau2
n/a
IFBench
wins71.3%
AA-LCR
wins65%
Tau2
wins94.2%
FAQ
Which model is better, GPT-5.5 Pro or DeepSeek V4 Pro?+
GPT-5.5 Pro and DeepSeek V4 Pro should be compared by workload. This page places price, context, output limits, capabilities, and benchmark data side by side. It is also relevant to: deepseek vs chatgpt, chatgpt vs deepseek, deepseek vs chatgpt comparison, deepseek ai vs chatgpt, deepseek vs openai, openai vs deepseek.
Is DeepSeek V4 Pro cheaper than GPT-5.5 Pro?+
Use the pricing rows above to compare input, output, and cached input prices for GPT-5.5 Pro and DeepSeek V4 Pro.
Which model supports a longer context length?+
GPT-5.5 Pro lists 1.1M context length, while DeepSeek V4 Pro lists 1M.
Can I access both models through TokenHub?+
If both models are available in the TokenHub catalog, you can route requests to GPT-5.5 Pro and DeepSeek V4 Pro through the TokenHub API.