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GPT OSS 120B

OpenAI's open-weight 120B model for production and high reasoning use cases.

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Input price
$0.165–$0.385
Output price
$0.66–$0.825
Context
128K
Max output
16K
140 (#72 of 79)
1365
—
Released
2025-08-30
InputTextOutputText

Providers

Providers that serve this model. With Auto, each request goes to the best available provider. Prices in USD per 1M tokens; stats cover the last 30 days.

Pricing

Prices vary by provider. Showing Groq, the lowest. Pick a provider above to see its prices.

Input
$0.165
per 1M tokens
Output
$0.66
per 1M tokens
Cache read
$0.0825
per 1M tokens

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Runs on your balance and is billed like any API request.

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Later turns reuse the provider’s prompt cache, which can lower cost and latency.

Providers

The answer streams in here.

Billed by usage

Similar models

Other models with the same output types at a similar price.

  • Better value: more capable, lower price
  • Pareto frontier
  • This model

Capability scores are from Epoch AI’s Epoch Capabilities Index (CC BY 4.0, as of 2026-11-10), which combines dozens of benchmarks with GPT-5 set at 150. epoch.ai/eci

Price: our current input price per 1M tokens in USD, lowest across channels. Dated snapshots and resold copies of the same model are merged into one point; free models are not shown.

Shaded area: capability above and price below the median of all models. Pareto frontier: no other model is both cheaper and more capable.

GPT OSS 120BThis model
140
Input
$0.165–$0.385
Output
$0.66–$0.825
—
Input
$0.165
Output
$0.55
—
Input
$0.165
Output
$0.66
—
Input
$0.165
Output
$0.66
—
Input
$0.165
Output
$0.66

Human preference ratings are from the LMArena Text Arena (CC BY 4.0, as of 2026-11-09): Elo ratings from blind votes, on a different scale from capability scores. lmarena.ai/leaderboard/text