Calculate the cost of using gpt-5.1-codex from Azure for your AI applications
Pricing data last updated:
Mode: Responses
Max: 272,000 tokens
Max: 128,000 tokens
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gpt-5.1-codex is a responses model from Azure, one of 25 responses models they offer. It is priced at $1.38 per 1M input tokens and $11.00 per 1M output tokens, ranking 15 out of 50 responses models by cost and cheaper than 68% of models in this category. gpt-5.1-codex supports vision, function calling, reasoning, prompt caching, structured output. It accepts up to 272K 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 272,000 input tokens. The maximum output length is 128,000 tokens.
At $1.38 per 1M input tokens and $11.00 per 1M output tokens, gpt-5.1-codex ranks 15 out of 50 responses models by input cost. It is more affordable compared to the median of $4.13 for responses models, and is cheaper than 68% of models in this category.
gpt-5.1-codex is one of 25 Azure responses models, with support for vision, function calling, reasoning, prompt caching, structured output.
| Model | Provider | Input / 1M tokens | Output / 1M tokens | vs gpt-5.1-codex |
|---|---|---|---|---|
| codex-mini-latest | OpenAI | $1.50 | $6.00 | +9% |
| gpt-5-codex | OpenAI | $1.25 | $10.00 | -9% |
| gpt-5.1-codex | OpenAI | $1.25 | $10.00 | -9% |
Similar responses models from other providers
Yes. gpt-5.1-codex costs $1.38 per 1M input tokens compared to codex-mini-latest's $1.50 per 1M input tokens, making it 9% more affordable. Both are responses models and share support for vision, function calling, reasoning, prompt caching, structured output.
gpt-5.1-codex input pricing is $1.38 per 1M tokens, which is 67% below the median of $4.13 for responses models. It ranks 15 out of 50 responses models by input cost, making it cheaper than 68% of models in this category. For output, it costs $11.00 per 1M tokens compared to the median of $24.75.
Among Azure's 25 responses models, gpt-5.1-codex ranks 11 by input cost.
The most comparable responses models to gpt-5.1-codex are: codex-mini-latest from OpenAI ($1.50/1M input tokens); gpt-5-codex from OpenAI ($1.25/1M input tokens); gpt-5.1-codex from OpenAI ($1.25/1M input tokens); gpt-5.1-codex-max from OpenAI ($1.25/1M 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.
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gpt-5.1-codex 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 $1.38 and generating 1M output tokens costs $11.00.
