OpenAIGPT-5.6 Terra
The balanced GPT-5.6 tier for everyday professional work: competitive with GPT-5.5 at roughly half the price, with the same 1.05M context window.
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 | $2.5 / M | $5 / M | $1.25 / M |
| Output | $15 / M | $22.5 / M | $7.5 / M |
| Cache read | $0.25 / M | $0.5 / M | $0.125 / M |
| Cache write | $3.13 / M | $6.25 / M | $1.56 / 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 | Cache read / M | Batch | Access |
|---|---|---|---|---|---|
OpenAI | $2.5 | $15 | $0.25 | ✓ | First-party API |
Price history
Has this model gotten cheaper or more expensive?
More from OpenAI
Other models from the same provider.
Stop estimating. Track it.
SuperPenguin meters every GPT-5.6 Terra call your team makes, prices it with this exact rate card, and shows spend by feature, customer, and team.
Rates are generated from SuperPenguin's live pricing catalog.