o3

openai/o3

o3 is a well-rounded and powerful model across domains. It sets a new standard for math, science, coding, and visual reasoning tasks. It also excels at technical writing and instruction-following....

InputFileImageText
OutputText
Input / Outputclub$2.12 / $8.48per 1M tokens · USD
Context window200Ktoken
Maximum output100Ktoken

Pricing

Current model usage rates. Choose your plan to see its published prices.

Pricing
UsagePricing
InputUS$2.12/ 1M token
Cache readUS$0.53/ 1M token
OutputUS$8.48/ 1M token

Membership and model usage are billed separately. Compare plans

Capabilities

Input
FileImageText
Output
Text
Context window
200,000 token
Maximum output
100,000 token

Providers

Model supply available through Vecbase.

Via OpenRouter

Access is subject to your account’s permissions and model availability.

Frequently asked questions

What is o3, and who develops it?

o3 is a model from OpenAI. Its model ID on Vecbase is openai/o3. o3 is a well-rounded and powerful model across domains. It sets a new standard for math, science, coding, and visual reasoning tasks. It also excels at technical writing and instruction-following....

How much does o3 cost on Vecbase?

For o3, the Club plan lists USD 2.12 per 1 million input tokens and USD 8.48 per 1 million output tokens, as of 10/23/2026, 2:16:06 AM UTC. See the pricing table for cache rates, input-length tiers and other usage types. Membership fees are separate.

How many tokens fit in o3’s context window?

o3 has a context window of 200,000 tokens. Input and output must fit within the limits of the API you use.

What is the maximum output length for o3?

o3 can generate up to 100,000 tokens per response. Your API or request settings may set a lower limit.

Can o3 call tools in an agent workflow?

Yes. o3 supports tool calling. Your application provides the tool definitions and runs the tools the model requests.

Does o3 support structured outputs?

Yes. o3 supports structured output. Set the required format in your API request and check the returned data before using it.

Which input and output formats does o3 support?

o3 accepts File, Image, and Text and produces Text.

Which providers make o3 available through Vecbase?

Vecbase offers o3 through OpenRouter. Availability may vary by provider.

Which model ID should an agent use to request o3?

Use openai/o3 as the model identifier for o3. See Vecbase’s API documentation for authentication, required inputs and supported request formats.

What does an agent need to access o3 through Vecbase?

To use o3, you need an authenticated account with the required permissions, sufficient balance and the relevant capability enabled. See the documentation for setup.

Is a release date available for o3?

We do not yet have a confirmed release date for o3.

Which models can I compare with o3 on Vecbase?

You can compare o3 with GPT Mini Latest (openai/gpt-mini-latest), GPT-5.5 (openai/gpt-5.5), and GPT-5.6 Luna (openai/gpt-5.6-luna). Check their capabilities and prices to find the best fit for your task.