GPT-5.6 Sol
gpt-5.6-solgpt-56-solGPT5.6-Solopenai-gpt-56-sol- 🏢 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 29 more models by OpenAI →GPT-5.6 Sol is the top tier of OpenAI's GPT-5.6 generation, launched alongside siblings GPT-5.6 Terra and 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 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 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↓ | Routing | Input $/M | Cached $/M | Output $/M | Categories | API |
|---|---|---|---|---|---|---|---|
| ▲ Apex Ant 0x73b4…e736 | 71.90 | #7 | $3.60 | $0.36 | $18.00 | chat,writing,tasks,coding,creative,vision,multimodal,reasoning,long-context,agents | openai-chat-completions |
| Venice.ai Proxy 0x1f22…18c9 | 70.55 | #6 | $2.50 | $0.25 | $12.50 | chat,reasoning,vision,multimodal,web-search | openai-chat-completions |
| D5V1N2 0xd5e7…7be0 | 67.45 | #2 | $0.40 | $0.05 | $1.50 | chat,coding,reasoning,agent,vision,frontier,router,fallback | openai-chat-completions |
| antseed-zh 0x4122…e194 | 67.27 | #8 | $4.00 | $0.40 | $20.00 | chat,coding,reasoning | openai-chat-completions |
| GesundAI 0x983e…d826 | 66.98 | #3 | $0.44 | $0.048 | $2.20 | chat,code,reasoning,multimodal | openai-responses |
| TokenSale 0x2060…742d | 65.23 | #1 | $0.13 | $0.03 | $0.65 | chat,coding | openai-chat-completions,openai-responses |
| Super Seeder 0xd19f…41f3 | 63.77 | #5 | $2.475 | $0.2475 | $12.375 | chat,reasoning,vision,multimodal,tools,long-context | openai-chat-completions |
| Edith AI 0xb269…b1a6 | 61.93 | #4 | $1.50 | $0.30 | $9.00 | chat,coding | openai-chat-completions |
| ZLKPro-Api 0x0b0b…f446 | 58.35 | gated | $0.07 | $0.0345 | $0.789 | agent,chat,text,reasoning,research,smart,long-context,multimodal,visual | openai-chat-completions |
| bartly.eth64.de 0x666e…4666 | 53.43 | gated | $0.0723 | $0.0072 | $0.3617 | chat,coding,reasoning,long-context | openai-chat-completions |
| Fire Ant 🔥🐜 0xbe05…bc5d | 50.00 | gated | $4.1685 | $0.4169 | $20.8426 | chat,coding,reasoning,tools | — |
| Open Ant 0xe4f6…5bc4 | 50.00 | gated | $2.50 | $0.25 | $12.50 | chat,reasoning,vision,multimodal,tools,long-context | openai-chat-completions |
| Open Bird 0xc0f1…8183 | 50.00 | gated | $1.75 | $0.175 | $10.50 | chat,coding,reasoning | openai-chat-completions |
| NovaRoute AI 0xc50d…ed7b | 50.00 | gated | $1.7325 | $1.7325 | $10.395 | chat,coding,code,reasoning,agent,tasks,frontier,value,gpt,surplus,openai-compatible,low-cost,verified,github,response-auth,base-usdc,monitored | openai-chat-completions |
| Xcat 0xbc33…b75f | 50.00 | gated | $0.55 | $0.05 | $2.75 | — | openai-chat-completions |
| Night Harbor AI 0x305e…fcf6 | 50.00 | gated | $0.32 | $0.03 | $1.18 | chat,reasoning,coding,agent,gpt56,sol,native-gpt | openai-chat-completions |
| Best 0x472f…69fd | 49.76 | gated | $0.0722 | $0.0072 | $0.3616 | chat,coding | openai-chat-completions |
| api.contactboxtools.me 0x8144…6487 | 46.24 | gated | $0.32 | $0.03 | $1.18 | chat,coding,reasoning,multimodal | openai-chat-completions |
| Hana Gateway ✅ 0x4ae1…117b | 45.41 | gated | $0.15 | $0.15 | $0.90 | chat,coding,reasoning,tools | openai-chat-completions |
| direkturcrypto-seller 0xe4c4…3c7b | 22.77 | gated | $0.50 | $0.50 | $5.00 | chat,coding,math | openai-chat-completions |
| Real LLM 0x51df…7c41 | 17.74 | gated | $1.50 | $0.10 | $8.00 | chat,coding | openai-chat-completions |
| Apex TEE Test 0xe672…7955 | 15.22 | gated | $2.0033 | $2.0033 | $12.02 | chat,writing,tasks,coding,creative,vision,multimodal,reasoning,long-context,agents | openai-chat-completions |
| Cooper 0xacb4…00ae | 12.07 | gated | $0.525 | $0.0788 | $3.15 | chat,coding,reasoning | openai-chat-completions |
| Xpay 0x86b3…9438 | 9.03 | gated | $0.45 | $0.45 | $2.20 | chat,coding,reasoning | openai-chat-completions |
| Prompt-Forge 0x3a59…f1fd | 0.00 | gated | $5.10 | $5.10 | $30.50 | chat,coding,json,reasoning,tools | openai-chat-completions |
| Vito-Minimax 0xddfa…27fe | 0.00 | gated | $2.8125 | $2.8125 | $16.875 | chat,coding,reasoning,via-minimax,alias | openai-chat-completions |
| CatGPT 0xb629…dab4 | 0.00 | gated | $0.55 | $0.06 | $2.75 | chat,code,reasoning,multimodal | openai-responses |
"Best price" and the seller table are live AntSeed catalog data (advertised $/1M tokens — or $ per generated image for unit-billed image models — not settled amounts). Reputation = buyer trust score (0-100, the AntSeed SDK's own formula). "Routing" = the SDK's default buyer routing (what the VPR desktop app ships with): a trust ≥ 60 gate on the effective reputation, then cheapest-first among routable sellers; live failover state (per-peer cooldowns) is buyer-side runtime and not included. Model knowledge (TLDR, provider, About) via the VeniceStats enrichment layer. Advertised catalog, not the model used in any specific purchase. "Usage on AntSeed" counts only settlements whose buyers share the per-model split on-chain (metadata v2/v3, opt-in), so every usage figure is a lower bound.