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gpt-oss-20b Pricing

OpenAI · openai-gpt-oss-20b

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Input / 1M tokens
$0.030
Output / 1M tokens
$0.130
Context window
131,072 tokens
≈ 175 pages of text
Max output
131,072 tokens

What it costs in practice

Typical request (1,200 in + 400 out tokens)$0.0001
1,000 requests / month$0.088/mo10,000 requests / month$0.88/mo100,000 requests / month$8.80/mo
Estimate your own workloadOpens the calculator with gpt-oss-20b preloaded — adjust volume and token counts there.

Price history

List price per 1M tokens since we started tracking in Jun 2026. Each step marks a price change — hover a point for the exact date and rate.

What it excels at

Cost-efficient handling of general text tasks with 128k context window.

The business tradeoff

20B scale restricts depth on complex reasoning relative to larger GPT variants.

Same tier from other providers

Claude Sonnet 4.6Anthropic$0.0096/ typical requestLlama 4 MaverickMeta$0.0006/ typical requestDeepSeek V3.2DeepSeek$0.0005/ typical request

Head-to-head

gpt-oss-20b vs Claude Sonnet 4.6 →gpt-oss-20b vs Llama 4 Maverick →gpt-oss-20b vs DeepSeek V3.2 →

Vendor list rates, as of Jul 29, 2026 · source: openrouter · per-request examples assume 1,200 input + 400 output tokens.