Intelligence index
Outperforms 84% of compared models
GPT-6 Luna
GPT-6 Luna is the fast, cost-efficient model in OpenAI's GPT-6 series, positioned below GPT-6 Sol. It is suited for high-volume and latency-sensitive workloads such as chat, classification, and lightweight agentic tasks, and at higher reasoning effort it can take on complex software engineering and computer-use tasks that previously called for a Sol-tier model. It shares the GPT-6 family's gains in factual reliability and its clearer, more concise communication style.
- Input / output price
- $0.1/$0.5per 1M tokens
- Context
- 1.1M
- Released
- 2026-09-22
Pricing
Artificial Analysis
Explore rankingsRelated Models
GPT-6 Astra
openaiGPT-6 Astra is OpenAI's flagship model for demanding end-to-end work. It is suited for advanced analysis, software engineering, deep research, scientific work, and document creation, with particular strengths in long-horizon agentic tasks that involve computer and browser use.
- Context
- 1.1M
- Max output
- 128K
- Released
- 2026-09-04
- Input
- $10/M
- Output
- $50/M
- Cache read
- $1/M
GPT-6.1 Sol
openaiGPT-6.1 Sol is an upgrade to GPT-6 Sol from OpenAI, positioned below the flagship GPT-6 Astra in the GPT-6 series. It is suited for agentic coding, computer use, document-heavy professional work, and multi-step business workflow automation, and approaches Astra-level results on these tasks at a much lower cost. Compared with GPT-6 Sol, it makes fewer factual errors and is more reliable at respecting explicit restrictions and user intent during agentic tasks.
- Context
- 1.1M
- Max output
- 128K
- Released
- 2026-09-29
- Input
- $2/M
- Output
- $10/M
- Cache read
- $0.1/M
GPT-6.1 Terra
openaiGPT-6.1 Terra is the mid-tier model in OpenAI's GPT-6.1 series, priced below GPT-6.1 Sol. It is suited for everyday agentic, coding, and writing work, is particularly strong at understanding screenshots and on-screen content, and is efficient enough for high-volume workloads.
- Context
- 1.1M
- Max output
- 128K
- Released
- 2026-10-26
- Input
- $1/M
- Output
- $5/M
- Cache read
- $0.05/M