Calculate the cost of using gpt-5.1-chat-latest from OpenAI for your AI applications
Pricing data last updated:
Mode: Chat
Max: 128,000 tokens
Max: 16,384 tokens
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gpt-5.1-chat-latest is a chat model from OpenAI, one of 100 chat models they offer. It is priced at $1.25 per 1M input tokens and $10.00 per 1M output tokens, ranking 1624 out of 2292 chat models by cost and cheaper than 28% of models in this category. gpt-5.1-chat-latest supports vision, reasoning, web search, prompt caching, structured output — one of only 2 chat models with this combination. It accepts up to 128K 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 128,000 input tokens. The maximum output length is 16,384 tokens.
At $1.25 per 1M input tokens and $10.00 per 1M output tokens, gpt-5.1-chat-latest ranks 1624 out of 2292 chat models by input cost. It is more expensive compared to the median of $0.55 for chat models, and is cheaper than 28% of models in this category.
gpt-5.1-chat-latest is one of 100 OpenAI chat models, one of only 2 chat models combining prompt caching, reasoning, structured output, vision, web search.
| Model | Provider | Input / 1M tokens | Output / 1M tokens | vs gpt-5.1-chat-latest |
|---|---|---|---|---|
| gemini-2.5-pro | Vertex AI | $1.25 | $10.00 | 0% |
| gemini-3.5-flash | Vertex AI | $1.50 | $9.00 | +20% |
| gemini-2.5-pro | Google Gemini | $1.25 | $10.00 | 0% |
Similar chat models from other providers
No. gpt-5.1-chat-latest costs $1.25 per 1M input tokens while gemini-2.5-pro costs $1.25 per 1M input tokens, making gemini-2.5-pro 0% more affordable for input. However, gpt-5.1-chat-latest may offer different capabilities or performance characteristics that justify the price difference.
gpt-5.1-chat-latest input pricing is $1.25 per 1M tokens, which is 127% above the median of $0.55 for chat models. It ranks 1624 out of 2292 chat models by input cost, making it cheaper than 28% of models in this category. For output, it costs $10.00 per 1M tokens compared to the median of $1.50.
Among OpenAI's 100 chat models, gpt-5.1-chat-latest ranks 40 by input cost. Its combination of prompt caching, reasoning, structured output, vision, web search is shared by only 1 other chat model.
The most comparable chat models to gpt-5.1-chat-latest are: gemini-2.5-pro from Vertex AI ($1.25/1M input tokens); gemini-3.5-flash from Vertex AI ($1.50/1M input tokens); gemini-2.5-pro from Google Gemini ($1.25/1M input tokens); gemini-3.5-flash from Google Gemini ($1.50/1M 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-chat-latest 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.
