Vichar
All models

Nemotron 3 Ultra 550B

Experimental

vichar-nemotron-3-ultra

NVIDIA Nemotron 3 Ultra 550B, the largest Nemotron variant. Experimental: availability and rate limits may vary.

Context window
1M
Max output
66k
Input
$0.15 /M tokens
Output
$0.60 /M tokens

Supported parameters

curl https://api.vichar.io/v1/chat/completions \
  -H "Authorization: Bearer $VICHAR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "vichar-nemotron-3-ultra",
    "messages": [{"role": "user", "content": "Hello"}]
  }'
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