GPT-5.6 Terra API pricing
Standard tier, blended at 3:1 input to output: $4.50 per million tokens.
OpenAI charges $2.00 per million input tokens and $12.00 per million output tokens for GPT-5.6 Terra. It is sold in 5 forms, from $2.25 to $4.50 blended; the table below shows what each costs against standard. 4 of the models nearest it in price are cheaper on a blended basis.
Every tier of GPT-5.6 Terra
Blended at 3:1 input to output. The last column compares each against the standard tier.
| Source | ||||||||
|---|---|---|---|---|---|---|---|---|
| Standard Standard | gpt-5.6-terra | OpenAI | $2.00 | $12.00 | $0.200 | $4.50 | Standard | ↗ |
| Standard | gpt-5.6-terra | OpenRouter | $2.00 | $12.00 | $0.200 | $4.50 | Same | ↗ |
| Batch | gpt-5.6-terra:batch | OpenRouter | $1.00 | $6.00 | $0.100 | $2.25 | −50% | ↗ |
| Pro | gpt-5.6-terra-pro | OpenRouter | $2.00 | $12.00 | $0.200 | $4.50 | Same | ↗ |
| Pro · Batch | gpt-5.6-terra-pro:batch | OpenRouter | $1.00 | $6.00 | $0.100 | $2.25 | −50% | ↗ |
Prices last checked: . Methodology
Which tier to use
What each costs against standard in our data, and the job it is for.
Batch
The batch tier (gpt-5.6-terra: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-5.6-terra-pro is the same price as standard. Pro tiers spend more compute on each request. At this price the trade-off is latency rather than cost: expect slower answers. Pro is also sold as batch (gpt-5.6-terra-pro:batch), 50% cheaper than standard, for hard problems that can wait a day.
Direct or through a reseller
Through OpenRouter, gpt-5.6-terra 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.
Against the models nearest in price
Standard tiers, blended at a 3:1 input to output ratio.
| Source | ||||||
|---|---|---|---|---|---|---|
| GPT-5.6 Terra This model | OpenAI | $2.00 | $12.00 | 922,000 | $4.50 | ↗ |
| GPT-4o | OpenAI | $2.50 | $10.00 | 128,000 | $4.38 | ↗ |
| Command A | OpenRouter | $2.50 | $10.00 | 256,000 | $4.38 | ↗ |
| GPT-5.2 | OpenAI | $1.75 | $14.00 | 272,000 | $4.81 | ↗ |
| GPT-5.3 Chat (latest) | OpenAI | $1.75 | $14.00 | 128,000 | $4.81 | ↗ |
| GPT-5.2 Codex | OpenRouter | $1.75 | $14.00 | 400,000 | $4.81 | ↗ |
| GPT-5.3 Codex | OpenRouter | $1.75 | $14.00 | 400,000 | $4.81 | ↗ |
| Claude Sonnet 5.5 | Anthropic | $2.00 | $10.00 | 1,000,000 | $4.00 | ↗ |
| Claude Sonnet 5 | Anthropic | $2.00 | $10.00 | 1,000,000 | $4.00 | ↗ |
Prices last checked: . Methodology
Questions
How much does GPT-5.6 Terra cost per million tokens?
$2.00 per million input tokens and $12.00 per million output tokens, with cached input at $0.200. At a 3:1 input to output mix that blends to $4.50. Checked 28 Oct 2026.
How much cheaper is GPT-5.6 Terra through the Batch API?
gpt-5.6-terra:batch costs $1.00 in and $6.00 out per million tokens, 50% cheaper than standard, in exchange for asynchronous delivery.
What does GPT-5.6 Terra Pro cost?
gpt-5.6-terra-pro costs $2.00 in and $12.00 out per million tokens, the same price as standard.
What would GPT-5.6 Terra cost for a real workload?
A thousand requests a day at 2,000 input and 600 output tokens each comes to $336.00 a month on the standard tier, or $168.00 through batch.
What is the context window for GPT-5.6 Terra?
922,000 tokens of input, with up to 128,000 tokens of output.
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