Models · OpenAI

gpt-oss-20b

Released 5 Aug 2025Tool useReasoning

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...

Input$0.03₹2.64 · per 1M tokens
Output$0.13₹11 · per 1M tokens
Context131Ktokens it can read at once
Max output118Ktokens per reply

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What would it cost?

  • gpt-oss-20b$0.840 · ₹74 a month · $0.000 · ₹0.01 each

Estimate from list prices per token, at ₹88/$. Caching, batch discounts and taxes aren't included. A token is about ¾ of a word.