OpenAIGPT-5.5 Pro
The maximum-effort GPT-5.5 tier for the hardest reasoning and research tasks, priced for quality over throughput at $30 / $180 per 1M.
Source: OpenAI models, OpenAI pricing
Pricing
Every billing leg from the live catalog, in USD per 1M tokens.
| Billing leg | Standard | Long context | Batch |
|---|---|---|---|
| Input | $30 / M | $60 / M | $15 / M |
| Output | $180 / M | $270 / M | $90 / M |
Long-context rates apply above 272,000 input tokens.
Cost calculator
Billing-grade math over the rate card above, including the thinking tokens most estimates miss.
Hidden reasoning tokens bill as output. 1.0x = thinking off. Medium-effort reasoning typically lands near 3x; heavy reasoning runs 6x to 8x. Set it to match your workload.
Provider
Where this model runs, and what it charges.
| Platform | Input / M | Output / M | Batch | Access |
|---|---|---|---|---|
OpenAI | $30 | $180 | ✓ | First-party API |
Price history
Has this model gotten cheaper or more expensive?
| Effective | Input / Output | Status |
|---|---|---|
| April 24, 2026 – July 10, 2026 | $30 / $180 | past |
| July 10, 2026 | $30 / $180 | current |
More from OpenAI
Other models from the same provider.
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Rates are generated from SuperPenguin's live pricing catalog.