Claude Opus 4.6
claude-opus-4-6claude-opus-4.6opus-4-6opus-4.6- 🏢 Anthropic flagship reasoning model, released February 2026.
- 📏 One million token context window, 128K max output.
- 🧠 Adaptive thinking dynamically decides reasoning depth per task.
- 🔧 Built for agentic coding, long-horizon and autonomous workflows.
- 👁️ Multimodal vision, function calling, and web search supported.
- 📚 Reported 90.2% on Anthropic's BigLaw Bench legal reasoning.
- 🔒 Improved robustness to prompt injection over Opus 4.5.
- ⚡ Context compaction summarizes old tokens for long sessions.
Anthropic PBC is an American artificial intelligence company headquartered in San Francisco. Structured as a public benefit corporation, the lab develops large language models under the Claude name, with a research emphasis on building reliable, steerable, and safety-focused AI…
Explore 16 more models by Anthropic →Claude Opus 4.6 is Anthropic's flagship reasoning model, released in February 2026, positioned for complex software engineering, agentic workflows, and long-horizon autonomous tasks. It is the direct successor to Claude Opus 4.5 and arrives alongside the smaller, more cost-effective Claude Sonnet 4.6 and a latency-tuned Claude Opus 4.6 Fast variant.
Compared with Opus 4.5, Anthropic describes 4.6 as bringing enhancements in reasoning quality, instruction-following, and overall performance, with the model planning more carefully at the start of tasks and revisiting its reasoning before settling. A key generational change is the expanded one-million-token context window with 128K max output, versus the 200K context used in Opus 4.5 evaluations. On Anthropic's reported MRCR v2 long-context retrieval benchmark, Opus 4.6 scores 76%, and the company reports 65.4% on Terminal-Bench 2.0 and 90.2% on BigLaw Bench. On the provider's SWE-bench Verified, it reaches 81.42% with a prompt modification.
The release also introduced adaptive thinking, letting Claude decide when and how much reasoning to apply, plus context compaction that summarizes older context as token limits approach during long agentic runs.
Opus 4.6 is not the newest in its family. It was followed by Claude Opus 4.7 and later Claude Opus 4.8, which Anthropic now lists as its most capable generally available model.
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 | #1 | $2.67 | $0.27 | $13.37 | chat,reasoning,premium,vision,multimodal,long-context,writing,agents,tasks,coding,legal,finance,translate,creative | openai-chat-completions |
| Venice.ai Proxy 0x1f22…18c9 | 70.55 | #3 | $3.00 | $0.30 | $15.00 | chat,reasoning,coding,vision,multimodal,web-search | openai-chat-completions |
| Prime Seed 0x71e2…fc07 | 65.07 | #5 | $5.35 | $0.535 | $26.75 | chat,coding,premium,agents | openai-chat-completions |
| Super Seeder 0xd19f…41f3 | 63.77 | #2 | $2.97 | $0.297 | $14.85 | chat,coding,reasoning,vision,multimodal,tools,long-context | openai-chat-completions |
| Edith AI 0xb269…b1a6 | 61.93 | #4 | $3.00 | $0.60 | $15.00 | chat,coding | openai-chat-completions |
| ZLKPro-Api 0x0b0b…f446 | 58.35 | gated | $0.046 | $0.0145 | $0.395 | agent,chat,text,reasoning,research,smart,long-context,multimodal,visual | openai-chat-completions |
| bartly.eth64.de 0x666e…4666 | 53.43 | gated | $0.0647 | $0.0065 | $0.3234 | chat,coding,reasoning,long-context | openai-chat-completions |
| Open Ant 0xe4f6…5bc4 | 50.00 | gated | $6.00 | $0.60 | $30.00 | chat,coding,reasoning,vision,multimodal,tools,long-context | openai-chat-completions |
| Antseed Node 0x80d1…88cd | 50.00 | gated | $5.50 | $5.50 | $27.50 | chat,reasoning,coding,writing | anthropic-messages |
| Fire Ant 🔥🐜 0xbe05…bc5d | 50.00 | gated | $5.40 | $0.4555 | $27.00 | chat,coding,reasoning,tools,writing | — |
| Xcat 0xbc33…b75f | 50.00 | gated | $5.00 | $5.00 | $25.00 | — | openai-chat-completions |
| NovaRoute AI 0xc50d…ed7b | 50.00 | gated | $1.782 | $1.782 | $8.91 | chat,coding,code,reasoning,tasks,premium,claude,opus,value,surplus,openai-compatible,low-cost,verified,github,response-auth,base-usdc,monitored | openai-chat-completions |
| Open Bird 0xc0f1…8183 | 50.00 | gated | $1.75 | $0.175 | $8.75 | chat,reasoning,long-context | openai-chat-completions |
| Catastrophic 0xefbf…8908 | 50.00 | gated | $0.30 | $0.20 | $0.80 | chat,reasoning,coding,vision,multimodal | anthropic-messages |
| DrukHash.com🐉 0xe1b5…4de6 | 50.00 | gated | $0.30 | $0.05 | $1.25 | chat,coding,reasoning,premium | anthropic-messages |
| Best 0x472f…69fd | 49.76 | gated | $0.0459 | $0.0065 | $0.2499 | chat,coding | openai-chat-completions |
| api.contactboxtools.me 0x8144…6487 | 46.24 | gated | $0.25 | $0.03 | $1.10 | chat,coding,reasoning | openai-chat-completions |
| Hana Gateway ✅ 0x4ae1…117b | 45.41 | gated | $0.20 | $0.20 | $1.00 | chat,coding,reasoning,tools | openai-chat-completions |
| Meridian AI 0x8c8c…06f5 | 44.01 | gated | $4.1472 | $4.1472 | $20.5632 | chat,coding,reasoning | openai-chat-completions |
| Clanker Seller 0x7179…a55b | 43.45 | gated | $0.60 | $0.60 | $1.00 | chat,coding,reasoning | openai-chat-completions |
| antseed-neon-puma-944e 0x6650…944e | 35.09 | gated | $2.046 | $0.60 | $10.23 | chat,coding,math | openai-chat-completions |
| Cerebraz 0xba2b…8af7 | 35.01 | gated | $0.08 | $0.02 | $0.25 | chat,coding,reasoning,premium | anthropic-messages |
| Leftermute 0x388b…5389 | 28.39 | gated | $1.7895 | $1.7895 | $8.9478 | chat,coding,json,reasoning,tools | openai-chat-completions |
| Apex TEE Test 0xe672…7955 | 15.22 | gated | $0.9257 | $0.9257 | $4.6283 | chat,reasoning,premium,vision,multimodal,long-context,writing,agents,tasks,coding,legal,finance,translate,creative | openai-chat-completions |
| Flash 0x0329…9b2c | 0.00 | gated | $5.00 | $5.00 | $25.00 | — | openai-chat-completions |
"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.