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OpenAI: GPT OSS 20B

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openai/gpt-oss-20b
Created Oct 3, 2025|131K context|$0.04/M input tokens|$0.15/M output tokens
TEE

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 lower-latency inference and deployability on consumer or single-GPU hardware. The model is trained in OpenAI’s Harmony response format and supports reasoning level configuration, fine-tuning, and agentic capabilities including function calling, tool use, and structured outputs.

Providers for OpenAI: GPT OSS 20B

RedPill routes this private model across verified providers with automatic fallbacks. Pricing is unified, so you pay the same price no matter which provider serves your request, while live metrics show first-token latency, speed, and uptime.

Total Context
131K
Input
$0.04/M
Output
$0.15/M
ProviderFirst TokenSpeedUptime
phala logophala
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Gateway API

RedPill provides a unified private completion API to all models and providers that you can call directly, or through the OpenAI SDK. Verification can be added without changing your model call pattern.

const response = await fetch("https://api.redpill.ai/v1/chat/completions", {
  method: "POST",
  headers: {
    "Authorization": `Bearer ${process.env.REDPILL_API_KEY}`,
    "Content-Type": "application/json"
  },
  body: JSON.stringify({
    "model": "openai/gpt-oss-20b",
    "messages": [
      {
        "role": "user",
        "content": "What is the meaning of life?"
      }
    ],
    "provider": { "aci_verified": true }
  })
});

console.log("receipt", response.headers.get("x-receipt-id"));
console.log(await response.json());
Verify Privacy Evidence

TEE responses carry two proof layers you can check yourself: a nonce-bound attestation report for the gateway, and a signed receipt that binds your request and response to an attested upstream session.

# 1. Verify the gateway (nonce-bound, proves which protected workload serves you)
NONCE="$(openssl rand -hex 16)"
curl -s "https://api.redpill.ai/v1/attestation/report?nonce=$NONCE" \
  -H "Authorization: Bearer $REDPILL_API_KEY" -o report.json

# 2. Call the model and capture the x-receipt-id response header
curl -s "https://api.redpill.ai/v1/chat/completions" -D headers.txt \
  -H "Authorization: Bearer $REDPILL_API_KEY" -H "Content-Type: application/json" \
  -d '{"model":"openai/gpt-oss-20b","messages":[{"role":"user","content":"Hello"}],"provider":{"aci_verified":true}}' -o response.json
RECEIPT_ID="$(grep -i ^x-receipt-id headers.txt | tr -d '\r' | awk '{print $2}')"

# 3. Fetch the signed receipt, then follow it to the attested session
curl -s "https://api.redpill.ai/v1/aci/receipts/$RECEIPT_ID" \
  -H "Authorization: Bearer $REDPILL_API_KEY" -o receipt.json
SESSION_ID="$(jq -r '.event_log[]|select(.type=="upstream.verified").session_id' receipt.json)"
curl -s "https://api.redpill.ai/v1/aci/sessions/$SESSION_ID" \
  -H "Authorization: Bearer $REDPILL_API_KEY"
Full verification walkthrough →
RedPill

End-to-end encrypted AI through one gateway: private models, verified providers, unified pricing, live performance, and evidence your team can check.