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Model Square

Explore the
model universe.

Discover the models available through Top Billing. Every entry lists only what its routes have been verified to do — capabilities, limits, the APIs you can call it with, and whether it is available right now.

In focus

tb-gpt-6-astra

GPT-6 Astra

Context
1M
Max output
128K
Input
Text, Image
Status
Available
  • chat
  • streaming
  • tools
  • vision
POST /v1/chat/completionsPOST /v1/messages
View model Try in Playground
POST /v1/chat/completions
import os
from openai import OpenAI

client = OpenAI(
    api_key=os.environ["TB_API_KEY"],
    base_url="https://api.topbilling.in/v1",
)

response = client.chat.completions.create(
    model="tb-gpt-6-astra",
    messages=[{"role": "user", "content": "Summarise this ticket in one line."}],
)
print(response.choices[0].message.content)
In focus

tb-claude-fable-5

Claude Fable 5

Context
1M
Max output
128K
Input
Text, Image
Status
Available
  • chat
  • streaming
  • tools
  • vision
POST /v1/chat/completionsPOST /v1/messages
View model Try in Playground
POST /v1/chat/completions
import os
from openai import OpenAI

client = OpenAI(
    api_key=os.environ["TB_API_KEY"],
    base_url="https://api.topbilling.in/v1",
)

response = client.chat.completions.create(
    model="tb-claude-fable-5",
    messages=[{"role": "user", "content": "Summarise this ticket in one line."}],
)
print(response.choices[0].message.content)

All models

17 of 17 models

Chat & reasoning

17

Model IDs are Top Billing’s own. Upstream vendors and their model names are intentionally not part of the public API; routes can change behind an ID without changing its contract.