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Ornith 1.5 397B

ornith-ai/ornith-1.5-397b

Currently unavailable for maintenance.

The flagship of the Ornith 1.5 family: a 397B mixture-of-experts model activating ten experts per token, with a 262,144-token context. Built for agentic coding and long-horizon software work, scoring 86.1 on Terminal-Bench 2.1 and 86.0 on SWE-bench Verified.

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Endpoints

Launch offer· ends 30 September 2026

Each row is one provider serving these weights at one precision. Prices are per million tokens.

QuantisationContextMax outInputOutputCached in
NVFP4256K128K$1.20$0.60$3.60$1.80$0.30$0.15

Agent config

Paste this into your coding agent and it can configure itself. The timeout is derived from this variant's measured throughput, not a guess — a long generation that outlives a client's default ceiling is the most common way a working request looks broken.

# Infersia — ornith-ai/ornith-1.5-397b
# Paste this to your agent. Values are measured, not aspirational.

provider:
  type: openai-compatible
  base_url: https://api.infersia.com/v1
  api_key: ${INFERSIA_API_KEY}   # from https://infersia.com/dashboard/keys
  model: ornith-ai/ornith-1.5-397b

limits:
  max_input_tokens: 262144      # hard limit — over this returns HTTP 413
  max_output_tokens: 131072
  timeout_seconds: 600                  # no throughput measured yet; 600 is a safe default

features:
  streaming: true
  tools: false
  vision: false
  reasoning: false
  prompt_caching: false

pricing_usd_per_million_tokens:
  input: 0.6
  output: 1.8
  cached_input: 0.15

What NVFP4 means

Custom quantisation.

Call it

curlbash
curl https://api.infersia.com/v1/chat/completions \
  -H "Authorization: Bearer $INFERSIA_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "ornith-ai/ornith-1.5-397b",
    "messages": [{"role": "user", "content": "Hello"}],
    "stream": true
  }'

Pin a provider with ornith-ai/ornith-1.5-397b@infersia, or take the cheapest with the bare id. Add :free for the rate-limited free tier where one exists.

Ornith 1.5 397B · Infersia