GPT-5.6 Terra API Pricing
OpenAI · Mid-tier · Proprietary · released 2026-07. Prices in USD per 1 million tokens. Data snapshot: 2026-09-28.
GPT-5.6 Terra has held the same list price since 2026-08-17 and is the 99th cheapest of 108 Mid-tier models. None of its 3 hosts undercuts the price quoted here. It is rated a stable release but does not meet all four criteria of the FinOps Friendly badge.
- Input: $2.00 per 1M tokens
- Output: $12.00 per 1M tokens
- Batch API (input/output): $1.00 / $6.00
- Prompt-cache read: $0.20
- Context window: 1M
- Arena ELO: 1465 (as of 2026-09-25)
- Available on: Direct API, AWS Bedrock, Azure AI Foundry, OpenRouter (curated by hand, verify with the provider)
- AWS Bedrock regions: ap-northeast-1, ap-southeast-1, eu-central-1, eu-west-1, us-east-1, us-east-2, us-west-2
GPT-5.6 Terra market position
On blended price ($9.00 per 1M tokens at 30% input, 70% output) it is cheaper than 6% of Mid-tier models: 99th cheapest of 108, tied with 3 others. Across every category it is cheaper than 13% of priced text models in the catalogue: 241st cheapest of 281, tied with 3 others. Its Arena ELO of 1465 ranks 20th of the 68 models that carry one, tied with 3 others, above 67% of them.
GPT-5.6 Terra licence, size and capabilities
GPT-5.6 Terra is recorded here as proprietary: access is through an API, priced by the token. Its parameter count is not published. Listed capabilities: Text, Vision, Reasoning, Code, Agents. Filling its 1M context window once costs $2.00 in input tokens at list price.
Monthly cost at 100K requests, by business use case
From the after-discounts figure (prompt caching on the cached input share, batch API for async workloads, only where the provider publishes those rates), which assumes you implement both, to the list price. One figure means no discount is published.
| Use case | Tokens (in/out) | Monthly (after discounts – list) |
|---|---|---|
| Support Ticket | 1,500 / 500 | $738 – $900 |
| Knowledge Q&A | 2,000 / 800 | $1.1K – $1.4K |
| Meeting Summary | 10,000 / 1,200 | $1.6K – $3.4K |
| Marketing Content | 2,500 / 1,800 | $2.6K – $2.7K |
| Coding Task | 3,000 / 2,000 | $2.7K – $3.0K |
| Invoice Processing | 1,500 / 600 | $474 – $1.0K |
| Call Summary | 2,000 / 700 | $604 – $1.2K |
| Agent Workflow | 6,000 / 3,000 | $4.0K – $4.8K |
GPT-5.6 Terra pricing by host
A host is a company that runs the model and sells it by the token — the lab that made it, a cloud platform like Amazon Bedrock, Azure or Vertex, or an independent provider. One model, several sellers, and often several prices. This model is sold by 3 different hosts. The price quoted above is the one we publish so that models stay comparable; it is not necessarily the cheapest way to buy this model. List prices as published on 2026-09-28 via OpenRouter — negotiated rates, committed-use discounts and provisioned capacity are not shown.
The price we publish is already the cheapest of the 3 hosts: OpenAI at $2.00 input / $12.00 output per 1M tokens. The dearest, Amazon Bedrock, charges 1.1x the cheapest.
| Host | Input $/1M | Output $/1M |
|---|---|---|
| OpenAI (the price shown above) | $2.00 | $12.00 |
| Azure (the price shown above) | $2.00 | $12.00 |
| Amazon Bedrock | $2.20 | $13.20 |
GPT-5.6 Terra price history
GPT-5.6 Terra has been in our daily price archive since 2026-08-15. Its price series starts on 2026-08-17 at $2.00 input / $12.00 output per 1M tokens, because the earlier snapshots carried a data error that was corrected afterwards. No list price change since 2026-08-17. Last checked against the 2026-09-28 snapshot.
Alternatives to GPT-5.6 Terra
- Next cheaper Mid-tier model: Command A (Cohere) at $7.75 blended, 14% less.
- Next more expensive: Nova Premier 1.0 (Amazon) at $9.50 blended, 6% more.
The nearest Mid-tier models on Arena ELO, each with its blended price and score difference against GPT-5.6 Terra.
- Grok 4.5 (xAI) — $2.00 in / $6.00 out per 1M, Arena ELO 1465: 47% cheaper, same Arena ELO
- GLM 5.1 (Zhipu) — $0.96 in / $3.03 out per 1M, Arena ELO 1465: 73% cheaper, same Arena ELO
- Claude Sonnet 5 (Anthropic) — $2.00 in / $10.00 out per 1M, Arena ELO 1462: 16% cheaper, 3 ELO points lower
- Kimi K2.6 (Moonshot) — $0.65 in / $3.41 out per 1M, Arena ELO 1461: 71% cheaper, 4 ELO points lower
- Cheapest within 15 Arena points: GLM 5.3 Flash (Zhipu), 96% cheaper, 9 ELO points higher, out of 25 models in that band.
- Highest Arena ELO within 20% of this price: Gemini 3.1 Pro Preview (Google), same blended price, 22 ELO points higher, out of 7 models in that price band.
Common questions about GPT-5.6 Terra pricing
- How much does GPT-5.6 Terra cost?
- GPT-5.6 Terra costs $2.00 per million input tokens and $12.00 per million output tokens on the API.
- Does GPT-5.6 Terra offer batch or cached pricing?
- Yes. Batch API pricing is $1.00/M input and $6.00/M output. Prompt-cache reads cost $0.20/M.
- What would GPT-5.6 Terra cost per month?
- For a support-ticket workload (1,500 input + 500 output tokens per request) at 100K requests/month, GPT-5.6 Terra costs about $900 at list prices.
- Has the price of GPT-5.6 Terra changed?
- GPT-5.6 Terra has been in our daily price archive since 2026-08-15. Its price series starts on 2026-08-17 at $2.00 input / $12.00 output per 1M tokens, because the earlier snapshots carried a data error that was corrected afterwards. No list price change since 2026-08-17. Last checked against the 2026-09-28 snapshot.
These are list prices: real cost also depends on caching, batching, negotiated discounts, marketplace agreements, and existing contracts. Get a FinOps review from OptimNow or compare all models.
Build the business case for GPT-5.6 Terra in the AI ROI Calculator: add your business value on top of these costs to get ROI, break-even and payback.
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