How should teams use gpt-5-pro for consequential work?

Keep appropriate human review and evaluate factual reliability, task quality, latency, cost, and operational controls before using it in high-impact workflows.

How do you get a cache hit on gpt-5-pro?

The GPT-5 Pro record lists prompt caching as a supported feature but publishes no cache-read rate, so cached-prefix billing is not part of the current pricing. Treat repeated prefixes as fresh input when you size the workload, and confirm the rate with the provider before designing for a cache saving.

Can you call gpt-5-pro with the SDK you already use?

Yes. gpt-5-pro is compatible with the standard SDK. Set the model parameter to gpt-5-pro and use your MixRoute API key. If your current code already calls the compatible API, changing the base URL and model ID is typically all that is needed.

What is the rate limit for gpt-5-pro?

gpt-5-pro rate limits vary by your MixRoute subscription plan. Check your plan details in the console for requests per minute (RPM) and tokens per minute (TPM) limits. Run a small load test before production to confirm your effective quota.

How should you set the output budget for gpt-5-pro?

For gpt-5-pro, set the max_tokens or max_completion_tokens parameter to control spending per call. Start with a budget aligned to your typical response length and increase only when longer outputs are genuinely needed. Monitor token usage in the API response headers to tune your budget over time.

Does gpt-5-pro charge more for long inputs?

GPT-5 Pro uses a single published rate for input, regardless of request length; see the pricing table for the applicable amount.

Model detail

GPT-5 Pro

Provided by OpenAI

Pay-as-you-go

GPT-5 Pro is OpenAI’s most advanced model, offering major improvements in reasoning, code quality, and user experience. It is optimized for complex tasks that require step-by-step reasoning, instruction following, and accuracy in high-stakes use cases. It supports test-time routing features and advanced prompt understanding, including user-specified intent like "think hard about this." Improvements include reductions in hallucination, sycophancy, and better performance in coding, writing, and health-related tasks.

Model specs

Model ID: gpt-5-pro

Context length: 400K
Max output: 272K
I/O modalities
Released: 2025-10

API endpoints

One MixRoute gateway, OpenAI-compatible

OpenAI-compatible /v1/chat/completions POST

Pricing

Flat rate, unit: /1M Tokens

Input

$15.0000 /1M Tokens

Completion

$120.0000 /1M Tokens

Selection summary

Quickly judge whether it fits your workload

What is this model good for?

Pro model for complex professional work

GPT-5 Pro: GPT-5 Pro uses more compute to think harder and provide consistently better answers.. 400,000-token context.

What should you check before using it?

400,000 context, 272,000 output

OpenAI model. Supports tool calling, structured outputs, function calling. Knowledge cutoff: 2024-09-30.

Why use it through MixRoute?

Drop-in via OpenAI-compatible endpoint on MixRoute

Set the model parameter to "gpt-5-pro" and use your MixRoute API key.

Capabilities & compatibility

Unconfirmed capabilities stay "Unknown," no guesses

Tool calling

GPT-5 Pro supports function and tool calls.

EX Send a tools definition; the response returns tool_calls to execute and feed results back.

Structured output

GPT-5 Pro can produce JSON-formatted output on demand.

EX response_format: { type: "json_schema" } forces valid JSON output.

Streaming

GPT-5 Pro supports streamed responses.

EX stream: true streams tokens incrementally, so chat UIs render as they arrive.

Prompt caching

GPT-5 Pro supports prompt caching under supported routing conditions.

EX Keep the system prompt and tool definitions at the start of the request; repeated prefixes are automatically billed at the cache-read rate.

Vision input

GPT-5 Pro can process image inputs alongside text.

EX Pass a base64-encoded image in a image_url content part alongside text messages.

OpenAI SDK

Call GPT-5 Pro through MixRoute's OpenAI-compatible endpoint.

EX Change base_url to https://api.mixroute.ai/v1; everything else follows the OpenAI style.

Token cost estimator

Live estimate from this page's pricing, not an actual bill

Input tokens Max per request 400K

Output tokens Max per request 272K

Requests / month

Cache hit rate –

This model has no cache-read price; caching is not counted

FAQ

gpt-5-pro is intended for complex reasoning, high-stakes knowledge work, code quality, and tasks that need careful instruction following and accuracy.

Get started

01

Create an API key

Generate a key in the Console; one key calls every model.
02

Set the base URL

Fully OpenAI SDK-compatible; just swap the URL to connect.

https://api.mixroute.ai/v1
03

Specify the model ID

In the request's model field, enter:

gpt-5-pro

Create an API key

New users get $5 in free credits

Test this model and alternate routes with the same request format

Start from a real workload, then let quality, total cost, and failure conditions decide whether to send production traffic.

Create an API key View integration docs