OpenAIEfficient MultimodalActive
GPT-5.6 Luna
OpenAI's lower-cost GPT-5.6 tier for high-volume and cost-sensitive workloads.
Facts Verified
Aug 25, 2026
Status
Active
Profile
Source-backed
Context
1.05M tokens
Max output
128K tokens
API
Available
Specifications
Context
1.05M tokens
Max output
128K tokens
CompanyOpenAI
Release DateJul 9, 2026
StatusActive
License / AvailabilityDirect API available
Capability Map
Verified fieldsReasoning
Supported
Vision
Supported
Audio
Not published
Video
Not published
API
Supported
Open weights
Not published
Input modalities
textimage
Output: text
Developer API Rates
Public rateInput / 1M
$0.2000
Output / 1M
$1.20
Cached $0.0200 / 1MLong context from 272,000 tokens
Long-context rate: $0.4000 input · $1.80 output / 1M tokens
Prompts above 272K input tokens use 2x input and 1.5x output rates for the full request.
Cache writes are billed at 1.25x uncached input.
Verified Capabilities
- 1.05M tokens published context window
- 128K tokens published maximum output
- Reasoning support listed by the provider
- Multimodal input: text, image
Pricing & Availability Notes
- A separate long-context pricing tier starts at 272,000 tokens
- Prompts above 272K input tokens use 2x input and 1.5x output rates for the full request.
- Cache writes are billed at 1.25x uncached input.
Provider API model ID
Use this identifier in the provider API where supported.
gpt-5.6-luna