GPT-5.5 API pricing

Batch

The batch tier (gpt-5.5:batch) is 50% cheaper than standard. Batch requests are queued and answered asynchronously, typically within 24 hours, so it suits work nobody is waiting on: evaluations, back-fills, bulk classification and tagging. Anything a user is waiting on belongs on the standard tier.

Pro

gpt-5.5-pro is 6× standard. Pro tiers spend more compute on each request. At 6 times the price, route only the hard cases to it, the ones where gpt-5.5 gets the answer wrong, and keep everything else on standard. Pro is also sold as batch (gpt-5.5-pro:batch), 3× standard, for hard problems that can wait a day.

Dated snapshots

One dated snapshot (gpt-5.5-2026-04-23) is listed at the same price as standard. A snapshot pins the model to one release, while the undated name moves to newer releases when the vendor updates it. Pin a snapshot in production when your prompts depend on exact output; use the undated name to pick up improvements automatically.

Direct or through a reseller

Through OpenRouter, gpt-5.5 is the same price as buying direct. A reseller is worth it for one bill across vendors and automatic fallback; buy direct for the vendor's own batch, caching and rate-limit terms.

How much does GPT-5.5 cost per million tokens?

$5.00 per million input tokens and $30.00 per million output tokens, with cached input at $0.500. At a 3:1 input to output mix that blends to $11.25. Checked 28 Oct 2026.

How much cheaper is GPT-5.5 through the Batch API?

gpt-5.5:batch costs $2.50 in and $15.00 out per million tokens, 50% cheaper than standard, in exchange for asynchronous delivery.

What does GPT-5.5 Pro cost?

gpt-5.5-pro costs $30.00 in and $180.00 out per million tokens, 6× standard.

What would GPT-5.5 cost for a real workload?

A thousand requests a day at 2,000 input and 600 output tokens each comes to $840.00 a month on the standard tier, or $420.00 through batch.

What is the context window for GPT-5.5?

1,050,000 tokens of input, with up to 128,000 tokens of output.