MODELS / OPENAI

GPT OSS 20B

A compact, open-weight language model optimized for low-latency and resource-constrained environments, including local and edge deployments.

TEXTREASONINGREASONINGTOOL-USEIMPLICIT-CACHING
131.1K
CONTEXT WINDOW
8.2K
MAX OUTPUT TOKENS
$0.05
INPUT PRICE / 1M TOKENS
$0.2
OUTPUT PRICE / 1M TOKENS
QUICKSTART

Call it in one request.

OpenAI-compatible: change the base URL, and the setup is complete.

curl https://enterprise.blackbox.ai/v1/chat/completions \
  -H "Authorization: Bearer $BLACKBOX_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "blackboxai/openai/gpt-oss-20b",
    "messages": [{ "role": "user", "content": "Hello!" }],
    "stream": true
  }'
SPECIFICATIONS

The full spec sheet.

Context, pricing, modalities, routing, and deployment: everything GPT OSS 20B supports, in one table.

MODEL ID
blackboxai/openai/gpt-oss-20b
DEVELOPED BY
OpenAI
MODEL TYPE
Text
RELEASED
Aug 5, 2025
CONTEXT WINDOW
131.1K
MAX OUTPUT TOKENS
8.2K
INPUT MODALITIES
text
OUTPUT MODALITIES
text
INPUT PRICE
$0.05 / 1M tokens
OUTPUT PRICE
$0.2 / 1M tokens
REASONING
Supported
DATA RETENTION
Standard retention
DEDICATED DEPLOYMENT
Not available (closed-weight model)
SUPPORTED PARAMETERS
max_tokenstemperaturestoptoolstool_choicereasoninginclude_reasoning