Core capabilities
- 500K default context with higher-long-context options
- Optional Ultrafast serving Tier for low latency
- Reasoning effort from minimal through max
- Full Responses API tool suite including computer use and MCP
← Model indexMODEL PROFILE / gpt-6-1-sol
OpenAI / current
GPT-6.1 Sol
OpenAI's newest GPT-6 Sol release, pairing frontier reasoning with a larger default context.
Context1.1M
ModalityText · Image
AccessAPI
ReasoningAdaptive
Where it fits.
A frontier GPT-6 class model tuned for long-horizon coding and tool-rich agent work at a lower unit cost than Astra. GPT-6.1 Sol extends the GPT-6 Sol line with a 500K default context and an optional Ultrafast mode for latency-sensitive serving.
Best-fit workflows
- Long-horizon agents
- Large-scale code refactoring
- Tool-heavy production pipelines
04 / OPERATIONSFrom evaluation
From evaluation
to production.
Deployment notes
Pin an explicit snapshot ID for reproducible behaviour. Route only the hardest samples upward, and compare standard versus Ultrafast on tail latency before committing.
Watch before choosing
Reasoning tokens are billed as output; measure real task cost, not input price alone. Ultrafast variants trade some depth for speed; benchmark both paths before standardising on one.
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↗