Model Details
Where is GPT-5.6 Terra a perfect fit?
- Production applications balancing model quality and API cost
- Coding, debugging, code review, and software-engineering agents
- Professional knowledge work and document analysis
- Research and complex multi-step reasoning
- Agentic workflows involving function and tool calls
- Computer-use and workflow automation
- Long-context processing of documents, codebases, and other large inputs
- High-volume workloads where Sol's additional capability does not justify its 2ร token price
Quick Model Estimate
Your GPT-5.6 Terra Cost Estimate
๐ฐ Total Cost
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for 1000 input + 1000 output tokens
Cost Breakdown
Prices are watched for changes and checked against the provider's own page.
Pricing
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Provider
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Modality
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Service Tier
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Input Price
(per 1M tokens) โ |
Output Price
(per 1M tokens) โ |
Cached Input
(per 1M tokens) โ |
Cached Output
(per 1M tokens) โ |
Context Size
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View
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|---|---|---|---|---|---|---|---|---|
 OpenAI | Text | Standard | $2.0000 | $12.0000 | $0.2000 | $2.5000 | 0 โ 272,000 tokens | โ |
| OpenAI | Text | Standard | $4.0000 | $18.0000 | $0.4000 | $5.0000 | 272,000+ tokens | โ |
| OpenAI | Text | Batch | $1.0000 | $6.0000 | $0.1000 | $1.2500 | 0 โ 272,000 tokens | โ |
| OpenAI | Text | Batch | $2.0000 | $9.0000 | $0.2000 | $2.5000 | 272,000+ tokens | โ |
| OpenAI | Text | Flex | $1.0000 | $6.0000 | $0.1000 | $1.2500 | 0 โ 272,000 tokens | โ |
| OpenAI | Text | Flex | $2.0000 | $9.0000 | $0.2000 | $2.5000 | 272,000+ tokens | โ |
| OpenAI | Text | Priority | $4.0000 | $24.0000 | $0.4000 | $5.0000 | 0 โ 272,000 tokens | โ |
| OpenAI | Text | Priority | $8.0000 | $36.0000 | $0.8000 | $10.0000 | 272,000+ tokens | โ |
 Perplexity | Text | Standard | $2.0000 | $12.0000 | $0.2000 | N/A | 0 โ 272,000 tokens | โ |
| Perplexity | Text | Standard | $4.0000 | $18.0000 | $0.4000 | N/A | 272,000+ tokens | โ |
Price changes
Every recorded change to GPT-5.6 Terra’s price, most recent first. Changes across all models are on the changes page.
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OpenAI cut the price of GPT-5.6 Terra, effective 30 July 2026.
Input $2.50 → $2.00 per 1M tokens (-20%), and 3 other price fields. 7 configurations changed.
Per-configuration detail on OpenAI → -
Perplexity cut the price of GPT-5.6 Terra, effective 30 July 2026.
Input $2.50 → $2.00 per 1M tokens (-20%), and 2 other price fields. 2 configurations changed.
Per-configuration detail on Perplexity →
Benchmarks
Scores from standardized evaluations by Artificial Analysis and Design Arena. Higher is better โ the indices summarize overall ability, while the detailed scores break down performance on individual benchmarks.
Artificial Analysis
Higher is better ยท benchmarked by Artificial AnalysisGraduate-level questions in biology, chemistry & physics
Expert-level questions across many academic domains
Precise following of detailed instructions
Tool-using agent tasks in a telecom support setting
Unpublished physics research reasoning problems
Long-context reasoning across large inputs
Research-level scientific coding tasks
Complex command-line and terminal workflows
Economically valuable, real-world knowledge work
Breadth of factual knowledge across domains
How reliably the model avoids fabricated answers
| Variant | GPQA Diamond | Humanity's Last Exam | IFBench | ฯยฒ-Bench Telecom | AA-LCR | SciCode | Terminal-Bench Hard | CritPt | GDPval | Omniscience Accuracy | Omniscience Non-Hallucination |
|---|---|---|---|---|---|---|---|---|---|---|---|
| GPT-5.6 Terra (Max) | 92.5% | 42.9% | 71.2% | 86.3% | 83% | 55% | 57.6% | 30% | 47.6% | 46.8% | 12.1% |
| GPT-5.6 Terra (Xhigh) | 90.8% | 41.9% | 66.3% | 80.4% | 79% | 52.3% | 62.9% | 27.1% | 47.3% | 45.5% | 11% |
| GPT-5.6 Terra (High) | 89.6% | 38.5% | 64.4% | 78.4% | 77.7% | 52.4% | 57.6% | 22.9% | 43.8% | 45.5% | 10.2% |
| GPT-5.6 Terra (Medium) | 87.2% | 33.3% | 62.2% | 72.8% | 74% | 50.5% | โ | 17.4% | 38.2% | 44.6% | 10.2% |
| GPT-5.6 Terra (Low) | 84.3% | 29.2% | 59.7% | 60.5% | 71.3% | 49.9% | 43.9% | 9.4% | 30.4% | 43.7% | 10.1% |
| GPT-5.6 Terra (Non-reasoning) | 74.6% | 11.4% | โ | โ | 58.7% | 45.1% | โ | 2% | 29.9% | 36.8% | 5% |
Compare GPT-5.6 Terra with
Two models side by side: worked costs, every rate, and every benchmark figure both of them report.
Other Models in the GPT-5.6 Family
FAQs about GPT-5.6 Terra
How much does GPT-5.6 Terra cost per 1M tokens?
GPT-5.6 Terra costs between $1.00 and $8.00 per million input tokens, and between $6.00 and $36.00 per million output tokens. The range covers Standard, Batch, Flex and Priority pricing.
What does a typical workload cost with GPT-5.6 Terra?
1,000 requests of 2,000 input and 500 output tokens each โ 2,000,000 input and 500,000 output tokens in total โ costs $5.00 with GPT-5.6 Terra at its lowest rates. Use the calculator on this page for your own volumes.
Has GPT-5.6 Terra's price changed?
Yes, once: OpenAI and Perplexity both cut it on 30 July 2026. OpenAI's input price went from $2.50 to $2.00 per million tokens.
Which provider is cheapest for GPT-5.6 Terra?
OpenAI has the lowest input rate for GPT-5.6 Terra, at $1.00 per million tokens. Across all providers: OpenAI from $1.00 and Perplexity from $2.00 per million input tokens.
Is there cheaper GPT-5.6 Terra pricing than the standard rate?
Yes. Batch pricing for GPT-5.6 Terra starts at $1.00 per million input tokens against $2.00 on the standard tier, about 50% lower.
What is GPT-5.6 Terra's context window?
GPT-5.6 Terra has a context window of 1,050,000 tokens, and returns up to 128,000 tokens in a single response.
What input types does GPT-5.6 Terra support?
GPT-5.6 Terra accepts text, image and file input, and returns text.
What is GPT-5.6 Terra's knowledge cutoff?
GPT-5.6 Terra's training data runs to 16 February 2026. It has no built-in knowledge of events after that date.