OpenAI: GPT-5.6 Terra
Analysis Summary
OpenAI's GPT-5.6 Terra is a capable multimodal model with strong reasoning and coding performance. It provides a one-million-token context window, vision, file input, tool use, and function calling, giving it a broad operating range across codebases, documents, and structured client workflows.
It suits software engineering, long-form analysis, SEO systems, agentic task execution, and customer-facing content that needs more depth than a budget model. The measured capability is below the highest frontier models, so the most complex autonomous or high-stakes reasoning tasks may still benefit from a premium tier. For many agency jobs, however, the practical feature set is well balanced.
Pricing supports regular professional use without making bulk traffic prohibitively expensive. Make Terra a strong default for mixed client workloads, reserving Sol for cases where maximum reasoning depth is essential.
Assessed August 9, 2026
Editorial notes
GPT-5.6 Terra combines strong reasoning and coding with a one-million-token context, vision, file input, and tool calling at mid-tier pricing. It is a practical flagship alternative for demanding work where Sol pricing is excessive.
Rankings consider pricing, capabilities, benchmarks, and real-world applicability and are refreshed as new models launch. Feedback?
DFO Verdict
GPT-5.6 Terra combines strong reasoning and coding with a one-million-token context, vision, file input, and tool calling at mid-tier pricing. It is a practical flagship alternative for demanding work where Sol pricing is excessive.
How OpenAI: GPT-5.6 Terra compares
OpenAI: GPT-5.6 Terra ranks #10 of 420 AI models we track for overall intelligence, #4 of 193 for coding, #14 of 175 for agentic tasks. Its 1.1M-token context window is larger than 98% of the models we list. At $1.00 per million input tokens it is cheaper than 28% of comparable models.
Dark bar = input · light bar = output, scaled to the priciest peer.
1M tokens ≈ 8 full-length novels or ~2,500 pages of business documents in a single request.
Strongest on business fit. The pulled-in value corner is the trade-off, and if the shape matters more than the price, this is your model.
Compare shapes side-by-side →Pricing
| Token Type | Cost per 1M tokens | Cost per 1K tokens |
|---|---|---|
| Input | $1.00 | $0.001000 |
| Output | $6.00 | $0.006000 |
What would OpenAI: GPT-5.6 Terra cost your business?
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A website chatbot handling around 100 customer conversations a day, a few short messages each.
Full calculator with 688 models → Price Calculator
These numbers get smaller with the right architecture.
We route routine calls to cheap models and save OpenAI: GPT-5.6 Terra for the hard ones. Most clients cut their estimate by 60-80%.
Talk to our teamAbout OpenAI: GPT-5.6 Terra
GPT-5.6 Terra is a balanced model in OpenAI's GPT-5.6 series, positioned between the flagship Sol tier and the cost-efficient Luna tier. It is suited for everyday coding, reasoning, and agentic..
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Frequently asked questions about OpenAI: GPT-5.6 Terra
How much does OpenAI: GPT-5.6 Terra cost?
OpenAI: GPT-5.6 Terra costs $1.00 per million input tokens and $6.00 per million output tokens.
What is the context window of OpenAI: GPT-5.6 Terra?
OpenAI: GPT-5.6 Terra has a context window of 1,050,000 tokens (1.1M).
Is OpenAI: GPT-5.6 Terra good for coding?
On our coding benchmark index, OpenAI: GPT-5.6 Terra ranks #4 of 193 models, placing it in the top quartile of the field for code generation and debugging.
What can OpenAI: GPT-5.6 Terra do?
OpenAI: GPT-5.6 Terra supports image/vision input, tool use, and function calling.
Who created OpenAI: GPT-5.6 Terra?
OpenAI: GPT-5.6 Terra is developed by OpenAI and was released on July 9, 2026.
