GPT-5.6 is hereTry it free on Felo AI for 7 days
GPT-5.6 brings OpenAI's latest model family into Felo AI. The official GPT-5.6 guide introduces Sol for flagship capability, Terra for balanced cost and performance, and Luna for efficient high-volume work. Use GPT-5.6 on Felo for AI search, coding, research, document-heavy work, and model comparison — free for your first 7 days.
Felo model access
Start in minutes
Open Felo AI Search
Use the dedicated GPT-5.6 search model link and sign in with your Felo account.
Select GPT-5.6
Ask questions that need stronger reasoning, source-backed answers, efficient summaries, or sustained context.
Test real work
Bring coding tasks, research folders, launch briefs, PDFs, comparison prompts, or frontend design work.
Keep using it for 7 days free
Your trial gives you time to compare GPT-5.6 against your everyday model choices.
What makes GPT-5.6 different
OpenAI's latest GPT-5.6 guide positions the model family around quality, efficiency, better intent understanding, stronger frontend design judgment, and new options for tool-heavy workflows.
Reasoning controls for harder work
GPT-5.6 supports intentional reasoning settings from none through max, plus Pro mode for quality-first tasks. Use it when a task needs planning, verification, tradeoff analysis, or a durable answer rather than a quick draft.
Programmatic tools and multi-agent workflows
The GPT-5.6 family adds Programmatic Tool Calling for bounded tool-heavy jobs and a multi-agent beta for parallel workstreams. On Felo, that makes it a strong choice for coding, research, and workflows that need several steps.
Efficient long-context and cached prompts
GPT-5.6 is designed to reach frontier results with fewer output tokens. For developer workflows, OpenAI also highlights explicit prompt caching and persisted reasoning options for multi-turn work.
Sol, Terra, and Luna naming
OpenAI's GPT-5.6 family uses Sol for flagship capability, Terra for strong lower-cost performance, and Luna for efficient high-volume workloads. Felo gives you a simple place to try GPT-5.6 and compare it with other models.
GPT-5.6 vs GPT-5.5: why upgrade
GPT-5.6 is not just a model-name update. OpenAI's current guidance frames it as a tuning upgrade with better efficiency, newer reasoning controls, and a Sol/Terra/Luna family structure for different workloads.
Latest GPT-5.6 guide highlights
The current OpenAI guide names GPT-5.6 as the latest family and calls out Sol, Terra, Luna, max reasoning, Pro mode, Programmatic Tool Calling, multi-agent beta, caching, and token efficiency.
Reasoning and Pro mode
Set reasoning effort intentionally. GPT-5.6 supports max effort for the hardest tasks and Pro mode when reliability matters more than latency.
Coding and frontend design
Use GPT-5.6 for repository reasoning, debugging, refactors, tests, and more polished frontend layout and visual hierarchy decisions.
Prompt caching and context
OpenAI highlights explicit prompt caching and persisted reasoning for reusable prompts and multi-turn workflows.
AI search
Combine GPT-5.6 with Felo AI Search for cited answers, research synthesis, and comparisons that are easier to verify.
Sol, Terra, Luna
Use Sol for flagship capability, Terra for balanced cost and performance, and Luna for efficient high-volume workloads.
Tool-heavy workflows
GPT-5.6 adds Programmatic Tool Calling and a multi-agent beta for complex work that can split across tools or parallel workstreams.
What to use GPT-5.6 for on Felo
Start with work where the new GPT-5.6 strengths matter: complex research, coding, frontend design, source-backed search, and documents that usually require several steps.
Technical research
Summarize specs, papers, changelogs, source pages, and engineering notes into clear decisions with cited context.
Coding assistance
Plan implementation, review code, explain bugs, generate tests, compare approaches, and reason across multiple files.
Deep AI search
Ask complex questions and use Felo's source-backed search flow to keep answers grounded.
Document-heavy work
Process long PDFs, transcripts, notes, contracts, product docs, and reports with better continuity.
Frontend and product work
Use GPT-5.6 for product briefs, positioning, landing page drafts, FAQ, comparisons, and more polished frontend direction.
Model evaluation
Run your own prompts against GPT-5.6 and compare quality, style, speed, and reliability before switching workflows.
Two ways to try GPT-5.6 on Felo
Felo AI Search
Open Felo AI Search, choose GPT-5.6, and ask questions that need current information, cited sources, stronger reasoning, and efficient synthesis.
Open Felo AI SearchFelo LLM Playground
Use the Felo LLM Playground to test GPT-5.6 with your own prompts. Compare it with GPT-5.5, Gemini, Claude, and other models before using it for serious work.
Open PlaygroundFrequently Asked Questions
Yes. Felo users can try GPT-5.6 free for 7 days, with no credit card required. Open Felo AI, select GPT-5.6 where available, and start testing it with search, research, coding, and long-context prompts.
Start your GPT-5.6 free trial on Felo
Use OpenAI's latest GPT-5.6 family for AI search, coding, research, frontend design, and long-context work. Felo users can try GPT-5.6 free for 7 days.
Try GPT-5.6 Free for 7 DaysNo credit card required · Available on Felo AI