reroute

OpenAI: gpt-oss-20b

openai/gpt-oss-20b
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gpt-oss-20b is an open-weight 21B parameter model released by OpenAI under the Apache 2.0 license. It uses a Mixture-of-Experts (MoE) architecture with 3.6B active parameters per forward pass, optimized for...

Modalities
In / Out Price
$0.018 / $0.09 per 1M
Context
131K
Released
Aug 5, 2025
Knowledge Cutoff
Jun 2024

API

Reroute speaks the OpenAI Chat Completions format. Point any OpenAI SDK at https://www.reroute.wtf/api/v1 and use openai/gpt-oss-20b as the model.

You need an API key
Keys start with sk-rr-v1- and are shown once.
Create API key
curl https://www.reroute.wtf/api/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer $REROUTE_API_KEY" \
  -d '{
  "model": "openai/gpt-oss-20b",
  "messages": [
    { "role": "user", "content": "What is the meaning of life?" }
  ]
}'

Streaming

Set stream: true to receive server-sent events. The final chunk carries usage and cost.

curl -N https://www.reroute.wtf/api/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer $REROUTE_API_KEY" \
  -d '{ "model": "openai/gpt-oss-20b", "stream": true,
        "messages": [{ "role": "user", "content": "Count to five" }] }'