Calculate the cost of using gpt-oss-20b from OpenRouter for your AI applications
Pricing data last updated:
Mode: Chat
Max: 131,072 tokens
Max: 32,768 tokens
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gpt-oss-20b is a chat model from OpenRouter, one of 480 chat models they offer. It is priced at $0.02 per 1M input tokens and $0.09 per 1M output tokens, ranking 15 out of 3501 chat models by cost and cheaper than 100% of models in this category. gpt-oss-20b supports function calling, reasoning, structured output. It accepts up to 131K input tokens.
Note: Use the interactive calculator above to estimate costs for your specific usage patterns.
Use the maximum token limits shown above to understand the model's capacity. This model can handle up to 131,072 input tokens. The maximum output length is 32,768 tokens.
At $0.02 per 1M input tokens and $0.09 per 1M output tokens, gpt-oss-20b ranks 15 out of 3501 chat models by input cost. It is more affordable compared to the median of $0.60 for chat models, and is cheaper than 100% of models in this category.
gpt-oss-20b is one of 480 OpenRouter chat models, with support for function calling, reasoning, structured output.
| Model | Provider | Input / 1M tokens | Output / 1M tokens | vs gpt-oss-20b |
|---|---|---|---|---|
| gemma-4-E4B-it | DeepInfra | $0.02 | $0.10 | +11% |
| doubao-seed-2-0-mini | Aihubmix | $0.03 | $0.30 | +67% |
| granite-4.0-h-micro | Cloudflare | $0.02 | $0.11 | -6% |
Similar chat models from other providers
Yes. gpt-oss-20b costs $0.02 per 1M input tokens compared to gemma-4-E4B-it's $0.02 per 1M input tokens, making it 11% more affordable. Both are chat models and share support for function calling, reasoning.
gpt-oss-20b input pricing is $0.02 per 1M tokens, which is 97% below the median of $0.60 for chat models. It ranks 15 out of 3501 chat models by input cost, making it cheaper than 100% of models in this category. For output, it costs $0.09 per 1M tokens compared to the median of $1.71.
Among OpenRouter's 480 chat models, gpt-oss-20b ranks 2 by input cost. It is the most affordable OpenRouter model with reasoning support.
The most comparable chat models to gpt-oss-20b are: gemma-4-E4B-it from DeepInfra ($0.02/1M input tokens); doubao-seed-2-0-mini from Aihubmix ($0.03/1M input tokens); granite-4.0-h-micro from Cloudflare ($0.02/1M input tokens); Llama-3.2-3B-Instruct from DeepInfra ($0.02/1M input tokens). These alternatives were selected based on similar capabilities, pricing, and provider diversity. You can compare any of these models in detail using the Bifrost Model Library.
Yes. At $0.02 per 1M input tokens, gpt-oss-20b is the most affordable chat model that supports reasoning. This makes it a strong option for reasoning-dependent workloads where cost efficiency matters.
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gpt-oss-20b is priced based on input and output tokens. Use the interactive calculator at the top of this page to estimate costs for your specific workload. Enter your expected input and output tokens volume and the calculator will show the total cost breakdown. For reference, processing 1M input tokens costs $0.02 and generating 1M output tokens costs $0.09.