Core capabilities
- Retained GPT-6 long context window
- Image input, structured outputs and Batch API
- Reasoning levels from none through max
- Escalation path to Sol or Astra for hard cases
← Model indexMODEL PROFILE / gpt-6-luna
OpenAI / current
GPT-6 Luna
The high-throughput GPT-6 tier serving free and entry consumer plans.
Context1.1M
ModalityText · Image
AccessAPI
ReasoningAdaptive
Where it fits.
Retains GPT-6 tooling and long context at a much lower unit price, aimed at high-volume and cost-sensitive workloads. GPT-6 Luna serves free and Go consumer tiers and provides the same Responses API surface with a smaller cost envelope.
Best-fit workflows
- Classification and routing
- Bulk extraction
- Bounded subagents
04 / OPERATIONSFrom evaluation
From evaluation
to production.
Deployment notes
Use it as the default tier with an automatic Sol escalation for low-confidence results. Enforce schemas and output caps, and measure document-level accuracy rather than fluency.
Watch before choosing
Large context at low unit price can hide cost; cap output and cache reusable prefixes. Throughput-oriented tiers may have tighter rate limits; verify concurrency before migration.
05
Family & versions
- GPT-6 AstraFlagship
- GPT-6.1 SolLatest frontier
- GPT-6 SolBalanced flagship
- GPT-6 LunaHigh throughput
Specifications and positioning checked against provider documentation.
Open official source↗