ERNIE 4.5 21B A3B Thinking

ernie-4.5-21b-a3b-thinking

ERNIE-4.5-21B-A3B-Thinking is Baidu's upgraded lightweight MoE model focused on deeper, higher-quality reasoning. It's tuned to perform strongly on logic, math, science, coding, text generation, and advanced academic benchmarks, delivering top-tier capability with efficient compute usage.

Context: 131.1K tokens
Endpoint

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Pricing

Input$0.035 / 1M

Output$0.14 / 1M

Cache Write (5m)$0.035 / 1M

Cache Write (1h)$0.035 / 1M

Cache Read$0.035 / 1M

Web Search$0 / 1M

Quick Start

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Endpoint

python

from openai import OpenAI client = OpenAI(    api_key="YOUR_API_KEY",    base_url="https://api.apertis.ai/v1") response = client.chat.completions.create(    model="ernie-4.5-21b-a3b-thinking",    messages=[        {"role": "user", "content": "Hello!"}    ],    max_tokens=1024,    temperature=0.7) print(response.choices[0].message.content) # Optional: Enable context compression to reduce token usage# response = client.chat.completions.create(#     model="ernie-4.5-21b-a3b-thinking",#     messages=[{"role": "user", "content": "Hello!"}],#     extra_body={"compression": {"enabled": True, "model": "gpt-4.1-mini"}}# )