# GPT 5.6 Sol, Luna, and Terra now available on AI Gateway

DevFeed: [GPT 5.6 Sol, Luna, and Terra now available on AI Gateway](<https://devfeed.tech/articles/gpt-5-6-sol-luna-and-terra-now-available-on-ai-gateway-963.md>)

Original publisher: [Read original article](<https://vercel.com/changelog/gpt-5-6-now-available-on-ai-gateway>)

Author: Jerilyn Zheng

Published: 2026-07-09T00:00:00Z

Content type: release

Language: en

Sources: [Vercel News](<https://devfeed.tech/sources/vercel-news.md>)

Topics: [Artificial Intelligence](<https://devfeed.tech/topics/ai.md>), [OpenAI](<https://devfeed.tech/topics/openai.md>), [AI Models](<https://devfeed.tech/topics/ai-models.md>), [API](<https://devfeed.tech/topics/api.md>), [SDKs](<https://devfeed.tech/topics/sdks.md>), [API keys](<https://devfeed.tech/topics/api-keys.md>), [Routing (disambiguation)](<https://devfeed.tech/topics/routing.md>)

Tags: [agentic](<https://devfeed.tech/tags/agentic.md>), [ai](<https://devfeed.tech/tags/ai.md>), [ai-gateway](<https://devfeed.tech/tags/ai-gateway.md>), [api](<https://devfeed.tech/tags/api.md>), [api-keys](<https://devfeed.tech/tags/api-keys.md>), [code](<https://devfeed.tech/tags/code.md>), [coding](<https://devfeed.tech/tags/coding.md>), [cost](<https://devfeed.tech/tags/cost.md>), [cybersecurity](<https://devfeed.tech/tags/cybersecurity.md>), [gpt](<https://devfeed.tech/tags/gpt.md>), [inference](<https://devfeed.tech/tags/inference.md>), [model](<https://devfeed.tech/tags/model.md>), [models](<https://devfeed.tech/tags/models.md>), [openai](<https://devfeed.tech/tags/openai.md>), [performance](<https://devfeed.tech/tags/performance.md>), [playground](<https://devfeed.tech/tags/playground.md>), [pricing](<https://devfeed.tech/tags/pricing.md>), [routing](<https://devfeed.tech/tags/routing.md>), [sdk](<https://devfeed.tech/tags/sdk.md>), [support](<https://devfeed.tech/tags/support.md>)

## AI overview

GPT 5.6 is available in limited preview on AI Gateway through three OpenAI models: Sol, Terra, and Luna. The release highlights stronger agentic capabilities, improved token efficiency, model routing, usage and cost tracking, retries, failover, reporting, API key budgets, and Zero Data Retention support.

## Source excerpt

GPT 5.6 is now available on AI Gateway in three models: Sol, Terra, and Luna. GPT 5.6 from OpenAI is now available on AI Gateway in a limited preview, across three models: Sol, Terra, and Luna. All three are stronger at agentic work across coding, biology, and cybersecurity, and are more token-efficient than the previous generation. Sol (openai/gpt-5.6-sol): the flagship, and the most capable of the three. Terra (openai/gpt-5.6-terra): a balanced model for everyday work, with performance comparable to the previous generation at half the cost. Luna (openai/gpt-5.6-luna): a fast, affordable model with strong capability at the lowest cost in the series. To use GPT 5.6, set model to one of the above slugs in the AI SDK: You can also set routing rules to switch to GPT 5.6 from other gateway models without touching your code. AI Gateway provides a unified API for calling models, tracking usage and cost, and configuring retries, failover, and performance optimizations for higher-than-provider uptime. It includes built-in custom reporting, Zero Data Retention support, budgets for API keys, routing rules, and more. AI Gateway reflects provider pricing with no markup and does not charge a platform fee on inference, including on Bring Your Own Key (BYOK) requests. Try GPT 5.6 in the model playground. Read more