OpenAI AgentKit pricing explained (2026): the real cost
verified 2026-06-01There is no fee for AgentKit itself; cost = OpenAI API usage, e.g. a GPT-5.4 agent run is $2.50 per 1M input tokens and $15.00 per 1M output tokens, plus tool fees like Web Search at $10 per 1K calls and Code Interpreter at $0.03 per 20-minute 1 GB session. Prices verified 2026-06-01 against openai.com. prices change often, verify live
The tiers
Monthly and annual. The unit you pay against, per plan.
| tier | monthly | annual | what's included | unit |
|---|---|---|---|---|
| Build (Agent Builder design time) | $0 | n/a | Visual drag-and-drop canvas, preview runs, versioning, guardrails | flat |
| GPT-5.4 (typical agent model) | Usageverify live | n/a | $2.50 / 1M input tokens, $15.00 / 1M output tokens | per 1M tokens |
| GPT-5.4-mini | Usageverify live | n/a | $0.75 / 1M input tokens, $4.50 / 1M output tokens | per 1M tokens |
| GPT-5.4-nano | Usageverify live | n/a | $0.20 / 1M input tokens, $1.25 / 1M output tokens | per 1M tokens |
| Built-in tools | Usageverify live | n/a | Web Search $10 / 1K calls; File Search $2.50 / 1K calls + $0.10/GB-day storage (1 GB free); Code Interpreter $0.03 per 20-min 1 GB session | per use |
| ChatKit storage | Usageverify live | n/a | $0.10/GB-day after 1 GB free per account/month (billing began Nov 1, 2025) | per GB-day |
// pools and per-unit rates are volatile · verified 2026-06-01 · cells flagged verify live link to the live vendor page
Pricing is hard to predict because it is purely usage-based: multi-agent workflows fan out across many model and tool calls, so token spend compounds fast.
Pricing is hard to predict because it is purely usage-based: multi-agent workflows fan out across many model and tool calls, so token spend compounds fast. ChatKit and File Search storage are free only up to 1 GB per account per month, then $0.10/GB-day. Agent Builder is still in beta, and Connector Registry is rolling out to API, ChatGPT Enterprise and Edu accounts.
See live pricing on OpenAI AgentKit →Worth it if
- You want to visually build and ship multi-agent workflows on OpenAI models without writing orchestration code or paying a separate platform fee.
- Your usage stays inside the included allowance.
- You value Teams already on the OpenAI API who want a visual agent canvas over raw lowest cost.
Look elsewhere if
- Pricing is hard to predict because it is purely usage-based: multi-agent workflows fan out across many model and tool calls, so token spend compounds fast. ChatKit and File Search storage are free only up to 1 GB per account per month, then $0.10/GB-day. Agent Builder is still in beta, and Connector Registry is rolling out to API, ChatGPT Enterprise and Edu accounts.
- You're highly cost-sensitive at scale.
- A cheaper tool in the comparison covers your use case.
Ready to try OpenAI AgentKit?
Start on the free tier (Agent Builder canvas, preview runs, and versioning are free to use. ChatKit and File Search include 1 GB free storage per account per month; first 1 GB of File Search storage is free. You pay only for the model tokens and tool calls your agents consume at runtime.), then size your plan with the numbers above.
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Questions
How much does OpenAI AgentKit really cost?
There is no fee for AgentKit itself; cost = OpenAI API usage, e.g. a GPT-5.4 agent run is $2.50 per 1M input tokens and $15.00 per 1M output tokens, plus tool fees like Web Search at $10 per 1K calls and Code Interpreter at $0.03 per 20-minute 1 GB session.
Does OpenAI AgentKit have a free tier?
Free tier: Agent Builder canvas, preview runs, and versioning are free to use. ChatKit and File Search include 1 GB free storage per account per month; first 1 GB of File Search storage is free. You pay only for the model tokens and tool calls your agents consume at runtime..
What's the catch with OpenAI AgentKit's pricing?
Pricing is hard to predict because it is purely usage-based: multi-agent workflows fan out across many model and tool calls, so token spend compounds fast. ChatKit and File Search storage are free only up to 1 GB per account per month, then $0.10/GB-day. Agent Builder is still in beta, and Connector Registry is rolling out to API, ChatGPT Enterprise and Edu accounts.
Is OpenAI AgentKit worth it?
OpenAI AgentKit is worth it if you specifically need Teams already on the OpenAI API who want a visual agent canvas. That's where it beats the alternatives. There is no fee for AgentKit itself; cost = OpenAI API usage, e.g. a GPT-5.4 agent run is $2.50 per 1M input tokens and $15.00 per 1M output tokens, plus tool fees like Web Search at $10 per 1K calls and Code Interpreter at $0.03 per 20-minute 1 GB session. If your usage is high-volume or budget is the priority, a cheaper tool in the comparison will do the same work for less.