For the complete documentation index, see llms.txt. Markdown versions of documentation pages are available by appending .md to the page URL.
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Prompting

Reasoning

Images

Realtime and audio

Specialized models

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Pricing

Flagship models

Our latest models
Prices per 1M tokens.
Short contextLong context
ModelInputCached inputCache writesOutputInputCached inputCache writesOutput
gpt-6-astra$10.00$1.00$12.50$50.00$20.00$2.00$25.00$75.00
gpt-6.1-sol$2.00$0.10$2.50$10.00$4.00$0.20$5.00$15.00
gpt-6-luna$0.10$0.01$0.125$0.50$0.20$0.02$0.25$0.75

Regional processing (data residency) endpoints are charged a 10% uplift for models released on or after March 5, 2026. FedRAMP endpoints are also charged a 10% uplift. Priority processing was renamed Fast mode on July 30, 2026. GPT-5.6 Sol’s promotional pricing is available at least through November 21, 2026.

Cyber models

Our latest Daybreak models.
Prices per 1M tokens.
Short contextLong context
ModelInputCached inputCache writesOutputInputCached inputCache writesOutput
gpt-5.6-sol$4.00$0.40$5.00$20.00$8.00$0.80$10.00$30.00
gpt-5.6-cyber$12.50$1.25$15.625$75.00----

Multimodal models

GPT-Live sessions

GPT-Live 1 voice sessions are billed per second, without rounding up to a whole minute. Backend model and tool usage is charged separately.

ModelPrice per minute
gpt-live-1$0.05

Realtime and audio generation models

Prices per 1M tokens unless noted.

ModelModalityInputCached inputOutput / cost
gpt-realtime-2.1Audio$32.00$0.40$64.00
Text$4.00$0.40$24.00
Image$5.00$0.50-
gpt-realtime-2.1-miniAudio$10.00$0.30$20.00
Text$0.60$0.06$2.40
Image$0.80$0.08-

Image generation models

Prices per 1M tokens.
For image generation cost estimates, use the calculator in the image generation guide.
ModelModalityInputCached inputOutput
gpt-image-2.5-sunburstImage$8.00$2.00$30.00
Text$5.00$1.25-
gpt-image-2.5-flareImage$8.00$2.00$30.00
Text$5.00$1.25-

Transcription models

Prices per 1M tokens unless noted.

ModelUse caseInputOutputEstimated cost
gpt-realtime-translateLive translation--$0.034 / minute
gpt-live-transcribeLive transcription--$0.017 / minute
gpt-realtime-whisperLive transcription--$0.017 / minute
gpt-transcribeTranscription--$0.0045 / minute
gpt-4o-transcribeTranscription$2.50$10.00$0.006 / minute
gpt-4o-mini-transcribeTranscription$1.25$5.00$0.003 / minute

Tools

ToolDetailsPricing
Web searchWeb search (all models)$10.00 / 1k calls
+ Search content tokens billed at model rates.
Image Web search (all models)$10.00 / 1k calls
+ Search content tokens billed at model rates.
Web search preview (reasoning models, including gpt-5, o-series)$10.00 / 1k calls
+ Search content tokens billed at model rates.
Web search preview (non-reasoning models)$25.00 / 1k calls
+ Search content tokens are free.
ContainersHosted Shell and Code Interpreter1 GB $0.03, 4 GB $0.12, 16 GB $0.48, 64 GB $1.92 per 20-minute session per container.
File searchStorage$0.10 / GB per day (1 GB free)
Tool call$2.50 / 1k calls
Agent KitChatKit file and image upload storage$0.10 / GB-day after 1 GB free per account per month
Tokens used for built-in tools are billed at the chosen model's per-token rates. GB refers to binary gigabytes (also known as gibibytes), where 1 GB is 2^30 bytes. Web search content tokens are tokens retrieved from the search index and fed to the model alongside your prompt to generate an answer. For gpt-4o-mini and gpt-4.1-mini with the non-preview web search tool, search content tokens are billed as a fixed block of 8,000 input tokens per call. File search tool call pricing applies to the Responses API only. Container pricing includes Hosted Shell and Code Interpreter. Eligible container sessions will be billed by the minute, with a 5-minute minimum per session. Responses API, Chat Completions API, Realtime API, Batch API, and Assistants API are not priced separately. Tokens are billed at the chosen model's input and output rates.

Specialized models

Prices per 1M tokens.
CategoryModelInputCached inputOutput
ChatGPTchat-latest$5.00$0.50$30.00
Codexgpt-5.3-codex$1.75$0.175$14.00
Life Sciencesgpt-rosalind-research$5.00$0.50$25.00
Billing for gpt-rosalind-research begins on October 5, 2026. Cache-write pricing does not apply to this model. Access is limited to approved internal research through the trusted-access program. All eligible organizations will continue to get access to the latest GPT-Rosalind models as they’re released.

Regional processing (data residency) endpoints are charged a 10% uplift for models released on or after March 5, 2026, that are eligible for data residency. See our Your data guide for supported regions and processing details.

Finetuning

Prices per 1M tokens.

OpenAI is winding down the fine-tuning platform. The platform is no longer accessible to new users, but existing users of the fine-tuning platform will be able to create training jobs for the coming months.


All fine-tuned models will remain available for inference until their base models are deprecated. The full timeline is here.
ModelTrainingInputCached inputOutput
o4-mini-2025-04-16$100.00 / hour$4.00$1.00$16.00
o4-mini-2025-04-16
with data sharing		$100.00 / hour$2.00$0.50$8.00
Tokens used for model grading in reinforcement fine-tuning are billed at that model's per-token rate. Inference discounts are available if you enable data sharing when creating the fine-tune job. Learn more.

Cloud platforms

OpenAI models on Amazon Bedrock and Microsoft Azure are billed through those services.