ant:reasoning-fastThinking-capable models, tuned for latency instead of depth.
ant:reasoning-fast keeps the hard requirement for thinking support but drops the quality floor and weights speed high. It suits reasoning work in an interactive loop, where waiting on a premium model would break the experience.
Live routing over the last 30 days
Requests
137
Success rate
48.91%
Avg latency
312ms
1,528 models across 23 providers currently qualify. Per-request limits (context size, cost caps, your model allowlist) narrow this further at routing time.
o1-pro
o1-pro
o3
Claude Sonnet 5
o3
GPT-5
o1
OpenAI: o3 Mini High
OpenAI: o4 Mini High
o1
OpenAI: o3 Mini (batch)
OpenAI: o4 Mini (batch)
Claude Sonnet 4
o4-mini
o4-mini
Qwen 3 235B
DeepSeek R1 671B (Venice)
Sonar Deep Research
Command A (03-2025)
Sonar Reasoning Pro
MiniMax M2.7
o3-mini
DeepSeek R1
o3-mini
Showing the 24 highest-scoring of 1,528.
from openai import OpenAI
client = OpenAI(
base_url="https://api.antbase.ai/v1",
api_key="YOUR_ANT_API_KEY",
)
response = client.chat.completions.create(
model="ant:reasoning-fast",
messages=[{"role": "user", "content": "Hello!"}]
)
print(response.choices[0].message.content)Every virtual pool accepts the same request shape — swap the model id to change the routing policy.
Browse all virtual models →