--- title: "gpt-5.1-codex-max Cost Calculator - OpenAI" description: "Calculate the cost of using gpt-5.1-codex-max from OpenAI. Input costs $1.25 and output $10.00 per 1M tokens." url: "https://www.getmaxim.ai/bifrost/llm-cost-calculator/provider/openai/model/gpt-5.1-codex-max" markdown: "https://www.getmaxim.ai/bifrost/llm-cost-calculator/provider/openai/model/gpt-5.1-codex-max.md" --- # gpt-5.1-codex-max Cost Calculator - OpenAI > Calculate the cost of using gpt-5.1-codex-max from OpenAI. Input costs $1.25 and output $10.00 per 1M tokens. ## Important Links - [View MCP Gateway](https://www.getmaxim.ai/bifrost/resources/mcp-gateway.md) - [Features](https://www.getmaxim.ai/bifrost/#features) - [Enterprise](https://www.getmaxim.ai/enterprise) - [Pricing](https://www.getmaxim.ai/pricing) - [Docs](https://docs.getbifrost.ai) - [GitHub](https://github.com/maximhq/bifrost) - [Book a Demo](https://www.getmaxim.ai/book-a-demo) ## About gpt-5.1-codex-max gpt-5.1-codex-max is a responses model from OpenAI, one of 22 responses models they offer. It is priced at $1.25 per 1M input tokens and $10.00 per 1M output tokens, ranking 33 out of 143 responses models by cost and cheaper than 67% of models in this category. gpt-5.1-codex-max supports vision, function calling, reasoning, web search, prompt caching, structured output. Its 400K-token context window is in the top 50% among responses models. ## Pricing Published OpenAI pricing for gpt-5.1-codex-max. - **$1.25 / 1M tokens Input.** - **$10.00 / 1M tokens Output.** ## Technical Specifications - **Responses Mode.** - **400,000 Max Input Tokens.** - **128,000 Max Output Tokens.** - **128,000 Max Tokens.** ## Model Capabilities gpt-5.1-codex-max supports: Function Calling, Vision, Reasoning, Web Search, Prompt Caching, Parallel Function Calling, Response Schema, Tool Choice, PDF Input. ## How Pricing Compares At $1.25 per 1M input tokens and $10.00 per 1M output tokens, gpt-5.1-codex-max ranks 33 out of 143 responses models by input cost. It is more affordable compared to the median of $2.00 for responses models, and is cheaper than 67% of models in this category. gpt-5.1-codex-max is one of 22 OpenAI responses models, with support for vision, function calling, reasoning, web search, prompt caching, structured output. its 400K-token context window places it in the top 50% of responses models. | Model | Provider | Input $/1M | Output $/1M | vs gpt-5.1-codex-max | | --- | --- | --- | --- | --- | | grok-4.20-multi-agent-beta-0309 | xAI | $1.25 | $2.50 | 0% | | codex-mini | Azure | $1.50 | $6.00 | +20% | | gpt-5.1-codex | Azure | $1.38 | $11.00 | +10% | | gpt-5.1-codex-2025-11-13 | Azure | $1.25 | $10.00 | 0% | | gpt-5-codex | Azure | $1.25 | $10.00 | 0% | ## More from OpenAI - [gpt-5-codex ($1.25/1M input)](https://www.getmaxim.ai/bifrost/llm-cost-calculator/provider/openai/model/gpt-5-codex.md) - [gpt-5.1-codex ($1.25/1M input)](https://www.getmaxim.ai/bifrost/llm-cost-calculator/provider/openai/model/gpt-5.1-codex.md) - [gpt-5.2-codex ($1.75/1M input)](https://www.getmaxim.ai/bifrost/llm-cost-calculator/provider/openai/model/gpt-5.2-codex.md) - [gpt-5.3-codex ($1.75/1M input)](https://www.getmaxim.ai/bifrost/llm-cost-calculator/provider/openai/model/gpt-5.3-codex.md) ## Related Resources - [OpenAI status](https://www.getmaxim.ai/bifrost/provider-status/openai.md) - [gpt-5.1-codex-max specifications](https://www.getmaxim.ai/bifrost/model-library/compare/openai/gpt-5.1-codex-max.md) - [All OpenAI pricing](https://www.getmaxim.ai/bifrost/llm-cost-calculator/provider/openai.md) ## FAQ ### Is gpt-5.1-codex-max cheaper than grok-4.20-multi-agent-beta-0309? No. gpt-5.1-codex-max costs $1.25 per 1M input tokens while grok-4.20-multi-agent-beta-0309 costs $1.25 per 1M input tokens, making grok-4.20-multi-agent-beta-0309 0% more affordable for input. However, gpt-5.1-codex-max may offer different capabilities or performance characteristics that justify the price difference. ### How does gpt-5.1-codex-max pricing compare to the average responses model? gpt-5.1-codex-max input pricing is $1.25 per 1M tokens, which is 37% below the median of $2.00 for responses models. It ranks 33 out of 143 responses models by input cost, making it cheaper than 67% of models in this category. For output, it costs $10.00 per 1M tokens compared to the median of $12.00. ### What makes gpt-5.1-codex-max different from other OpenAI models? Among OpenAI's 22 responses models, gpt-5.1-codex-max ranks 3 by input cost. ### What are the best alternatives to gpt-5.1-codex-max? The most comparable responses models to gpt-5.1-codex-max are: grok-4.20-multi-agent-beta-0309 from xAI ($1.25/1M input tokens); codex-mini from Azure ($1.50/1M input tokens); gpt-5.1-codex from Azure ($1.38/1M input tokens); gpt-5.1-codex-2025-11-13 from Azure ($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. ### How do I check if OpenAI is down? You can monitor OpenAI service health in real time on the Bifrost OpenAI Status page. It tracks current component status, active incidents, and historical reliability data pulled from the official status page every 60 seconds. ### How do I calculate gpt-5.1-codex-max costs? gpt-5.1-codex-max 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 $1.25 and generating 1M output tokens costs $10.00. ## Related Resources - [All OpenAI pricing](https://www.getmaxim.ai/bifrost/llm-cost-calculator/provider/openai.md) - [LLM cost calculator](https://www.getmaxim.ai/bifrost/llm-cost-calculator.md) - [Model library](https://www.getmaxim.ai/bifrost/model-library.md) - [Docs: Bifrost docs](https://docs.getbifrost.ai) - [GitHub: maximhq/bifrost](https://github.com/maximhq/bifrost) - [Pricing: Bifrost pricing](https://www.getmaxim.ai/pricing) - [Enterprise: Bifrost enterprise](https://www.getmaxim.ai/enterprise) - [Book a Demo: Bifrost demo](https://www.getmaxim.ai/book-a-demo) - [Resources: Bifrost resources](https://www.getmaxim.ai/bifrost/resources.md) --- *This is a markdown version of [https://www.getmaxim.ai/bifrost/llm-cost-calculator/provider/openai/model/gpt-5.1-codex-max](https://www.getmaxim.ai/bifrost/llm-cost-calculator/provider/openai/model/gpt-5.1-codex-max) for AI/LLM consumption.*