- 🏢 OpenAI's flagship tier in the GPT-5.6 series, released July 2026.
- 📏 Handles up to one million tokens of context.
- 🧠 New max reasoning effort setting for deeper deliberation.
- 🆕 Ultra mode uses subagents to parallelize complex multi-step work.
- 🔧 Built for agentic coding, command-line, long-horizon problem solving.
- 👁️ Supports vision, function calling, and web search.
- 🎯 Tuned for maximum intelligence across extended coding sessions.
- 🔒 Cyber safeguards block roughly ten times more harmful activity.
OpenAI is an American artificial intelligence research organization headquartered in San Francisco, structured as both a for-profit public benefit corporation and a nonprofit foundation. The lab developed the GPT family of large language models, the DALL-E image generation…
Explore 20 more models by OpenAI →GPT-5.6 Sol is the top tier of OpenAI's GPT-5.6 generation, launched alongside siblings [[sibling:openai-gpt-56-terra|GPT-5.6 Terra]] and [[sibling:openai-gpt-56-luna|GPT-5.6 Luna]] on July 9, 2026. Where Terra is the balanced everyday model and Luna the fast, low-cost option, Sol is tuned for maximum intelligence: complex reasoning, extended coding sessions, and agentic workflows that can run for hours. A higher-quality [[sibling:openai-gpt-56-sol-pro|GPT-5.6 Sol Pro]] variant targets the most demanding tasks.
Two generation-level features distinguish the 5.6 line from predecessors. OpenAI introduced a new max reasoning effort setting that gives Sol more time to reason deeply, plus an ultra mode that leverages subagents to accelerate complex work beyond a single agent. It accepts up to one million tokens of context and adds vision, function calling, and web search.
Against its own family predecessor [[sibling:openai-gpt-55|GPT-5.5]], OpenAI positions Sol for stronger command-line and multi-step coding plus longer-horizon problem solving. OpenAI also states GPT-5.6 Sol's cyber safeguards block roughly ten times more potentially harmful activity than earlier models.
Sol is available across ChatGPT, Codex, and the OpenAI API, with the plain gpt-5.6 alias routing to Sol.
This About section is AI-generated from public sources via VeniceStats + Venice inference, with no human editing. It may contain inaccuracies.
| Seller | Reputation↓ | Input $/M | Cached $/M | Output $/M | Categories | API |
|---|---|---|---|---|---|---|
| CatGPT 0xb629…dab4 | 100 | $0.55 | $0.06 | $2.75 | chat,code,reasoning,multimodal | openai-responses |
| Venice.ai Proxy 0x1f22…18c9 | 99 | $3.125 | $0.3125 | $18.75 | chat,reasoning,vision,multimodal,web-search | openai-chat-completions |
| Open Ant 0xe4f6…5bc4 | 84 | $6.25 | $0.625 | $37.50 | chat,tasks,reasoning | openai-chat-completions |
| ▲ Apex Ant 0x73b4…e736 | 75 | $0.495 | $0.054 | $2.475 | chat,writing,tasks,coding,creative,vision,multimodal,reasoning,long-context,agents | openai-chat-completions |
| Open Bird 0xc0f1…8183 | 70 | $3.50 | $0.35 | $15.75 | chat,coding,reasoning | openai-chat-completions |
| Fire Ant 🔥🐜 0xbe05…bc5d | 55 | $5.625 | $0.5625 | $33.75 | agent,agents,base-usdc,chat,code,coding,compatibility,creative,fallback,frontier,github,gpt,long-context,low-cost,monitored,multimodal,openai,openai-compatible,reasoning,response-auth,router,surplus,tasks,value,verified,vision,web-search,writing | — |
| D5V1N2 0xd5e7…7be0 | 43 | $0.72 | $0.72 | $3.90 | chat,coding,reasoning,agent,vision,frontier,router,fallback | openai-chat-completions |
| NovaRoute AI 0xc50d…ed7b | 39 | $0.54 | $0.54 | $0.54 | chat,coding,code,reasoning,agent,tasks,frontier,value,gpt,surplus,openai-compatible,low-cost,verified,github,response-auth,base-usdc,monitored | openai-chat-completions |
| Super Seeder 0xd19f…41f3 | 26 | $3.125 | $1.5625 | $18.75 | chat,tasks,reasoning | openai-chat-completions |
| Xcat 0xbc33…b75f | 23 | $0.55 | $0.05 | $2.75 | — | openai-chat-completions |
| Apex TEE Test 0xe672…7955 | 0 | $2.0033 | $2.0033 | $12.02 | chat,writing,tasks,coding,creative,vision,multimodal,reasoning,long-context,agents | openai-chat-completions |
"Best price" and the seller table are live AntSeed catalog data (advertised $/1M tokens, not settled amounts). Reputation = on-chain trust (0-100). Model knowledge (TLDR, provider, About) via the VeniceStats enrichment layer. Advertised catalog, not the model used in any specific purchase.