ChatGPT
Gain production-grade API access to OpenAI’s flagship GPT-5.6 model suite. Moving beyond a one-size-fits-all design, GPT-5.6 introduces a clear tiered architecture featuring Sol (Flagship Reasoning), Terra (Balanced Workhorse), and Luna (Lightweight Speedster). GPT-5.6 Sol introduces breakthrough capabilities like Max Reasoning effort and Parallel Subagents, enabling the model to break down and execute ultra-complex coding, cybersecurity tasks, and deep analytical workflows in parallel.
All Models
GPT 6 Astra Economy
GPT-6 Astra is OpenAI's flagship frontier model engineered for long-horizon, complex end-to-end enterprise workflows. Representing a major generational leap toward agentic intelligence, Astra integrates deep multi-step reasoning, advanced software engineering, and native computer-use capabilities to navigate software interfaces and execute multi-application workflows directly via GUI. Powered by symbolic world modeling and dynamic course-correction, it can break open-ended goals into actionable steps, handle ambiguous edge cases, and execute complex operations across unstructured environments. Setting new benchmarks on ARC-AGI-3 as well as complex financial, scientific, and coding tasks, GPT-6 Astra is built for enterprise agent orchestration, autonomous software development, financial intelligence, and complex legal/business decision support.
GPT 5.5 Economy
GPT-5.5 is a frontier model released by OpenAI on April 23, 2026. It features a context window of over 1 million tokens—922,000 input tokens and 128,000 output tokens—and supports both text and image inputs. The model scores 88.7% on SWE-bench Verified and 92.4% on MMLU, while reducing hallucinations by 60% compared with GPT-5.4. It excels in agentic coding, computer use, and deep research, while maintaining per-token latency comparable to GPT-5.4.
GPT 5.6 Sol Economy
GPT-5.6 Sol is the flagship model in OpenAI’s GPT-5.6 series. It is specifically designed for complex reasoning, coding, and agentic workflows, and particularly excels at multi-step problem solving, command-line assistance, and high-quality software tasks. This model is recommended when output quality and reliability matter more than raw throughput.
GPT 5.6 Terra Economy
GPT-5.6 Terra is the balanced model in OpenAI's GPT-5.6 series, positioned between the flagship Sol tier and the cost-efficient Luna tier. It is well suited for everyday coding, reasoning, and agentic workflows, offering a strong balance of quality, latency, and cost for general production use.
ChatGPT Models API Pricing Details
| Model | Pricing (USD) | Our Pricing (USD) | Discount | |
|---|---|---|---|---|
| GPT 6 Astra Economy | $10/M Tokens | Start from$1/M Tokens | -90% | |
| GPT 5.5 Economy | $5/M Tokens | Start from$0.5/M Tokens | -90% | |
| GPT 5.6 Sol Economy | $5/M Tokens | Start from$0.5/M Tokens | -90% | |
| GPT 5.6 Terra Economy | $2/M Tokens | Start from$0.2/M Tokens | -90% |