GPT-5.5 vs DeepSeek V4 Pro
GPT-5.5 vs DeepSeek V4 Pro: Side-by-side API pricing and specs — call both with one OpenAI-compatible key on GetModel.
GPT-5.5
OpenAI · Text
OpenAI GPT-5.5 flagship model with strong all-round reasoning, writing and coding. Served through getmodel's stable Codex Pro pool over an OpenAI-compatible endpoint.
View details →
DeepSeek V4 Pro
DeepSeek · Text
DeepSeek V4 Pro, a top Chinese model with strong reasoning and coding ability. Served through getmodel's low-cost domestic-models group over an OpenAI-compatible endpoint.
View details →Pricing comparison
| GPT-5.5 | DeepSeek V4 Pro | |
|---|---|---|
| Input / 1M tokens | $0.309 | $0.243 Cheaper |
| Output / 1M tokens | $1.86 | $0.486 Cheaper |
Specifications
| Provider | OpenAI | DeepSeek |
| Type | Text | Text |
| Endpoints | openai | openai |
How to call
One API key calls both models — just change the "model" field.
from openai import OpenAI
client = OpenAI(base_url="https://getmodel.ai/v1", api_key="$GETMODEL_API_KEY")
# GPT-5.5
client.chat.completions.create(model="gpt-5.5", messages=[{"role":"user","content":"Hi"}])
# DeepSeek V4 Pro (same key, just change "model")
client.chat.completions.create(model="deepseek-v4-pro", messages=[{"role":"user","content":"Hi"}])