Claude Sonnet 4.6
claude-sonnet-4-6claude-sonnet-4.6sonnet-4-6sonnet-4.6- 🆕 Anthropic's mid-tier Sonnet upgrade, released February 2026.
- 📏 1M-token context window with 64K max output tokens.
- 🔧 Improved coding, reasoning, and general-task performance.
- 👁️ Multimodal with vision, function calling, and web search.
- 🎯 Tuned for a strong quality-to-cost balance.
- 💬 Anthropic reports 80.2% on SWE-bench Verified (with prompt modification).
- 🧠 Positioned below Anthropic's flagship Opus tier.
- 🏢 Available through the Claude API.
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 12 more models by Anthropic →Claude Sonnet 4.6 is the latest entry in Anthropic's mid-tier Sonnet line, positioned as a balance of speed, intelligence, and cost for coding, reasoning, and general production workloads. Anthropic describes it as a full upgrade across coding, reasoning, and general tasks, paired with a 1-million-token context window and up to 64K output tokens.
Relative to its same-family predecessor [[sibling:claude-sonnet-4-5|Claude Sonnet 4.5]], the most concrete change is the context window, which expands to 1M tokens, letting the model ingest entire codebases, lengthy documents, or large research bundles in a single request. Anthropic positions the release as an across-the-board improvement over the prior Sonnet generation in coding and reasoning quality.
On agentic coding, Anthropic reports an 80.2% score on SWE-bench Verified with a prompt modification, and presents the model as narrowing the gap with its heavier Opus tier on demanding tasks while retaining the cost efficiency that defines the Sonnet line.
For the most complex, high-autonomy work, Anthropic still points users toward its flagship Opus tier, such as [[sibling:claude-opus-4-8|Claude Opus 4.8]]. Claude Sonnet 4.6 supports vision, function calling, and web search, and is accessible through the Claude API.
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 |
|---|---|---|---|---|---|---|---|
| Flash 0x0329…9b2c | 100 | gated | $0.60 | $0.60 | $3.00 | — | openai-chat-completions |
| Venice.ai Proxy 0x1f22…18c9 | 99 | #4 | $1.80 | $0.18 | $9.00 | chat,reasoning,coding,vision,multimodal,web-search | openai-chat-completions |
| ▲ Apex Ant 0x73b4…e736 | 83 | #1 | $0.54 | $0.162 | $2.70 | chat,reasoning,coding,vision,multimodal,long-context,agents,tasks,legal,study,translate | openai-chat-completions |
| Open Ant 0xe4f6…5bc4 | 74 | #5 | $2.34 | $0.234 | $11.70 | chat,coding,reasoning,vision,multimodal,tools,long-context | openai-chat-completions |
| surplusintelligence.ai 0x0e49…8927 | 68 | #3 | $1.08 | $0.108 | $5.40 | agents,chat,cheap,code,coding,developer,frontier,function-calling,multimodal,premium,reasoning,research,tasks,tools,vision,web-search | openai-chat-completions |
| Open Bird 0xc0f1…8183 | 64 | #2 | $1.05 | $0.105 | $5.25 | chat,coding | openai-chat-completions |
| NovaRoute AI 0xc50d…ed7b | 60 | gated | $0.594 | $0.594 | $2.97 | chat,coding,code,reasoning,tasks,claude,sonnet,value,surplus,openai-compatible,low-cost,verified,github,response-auth,base-usdc,monitored | openai-chat-completions |
| Super Seeder 0xd19f…41f3 | 40 | gated | $1.80 | $0.18 | $9.00 | chat,coding,reasoning,vision,multimodal,tools,long-context | openai-chat-completions |
| Fire Ant 🔥🐜 0xbe05…bc5d | 37 | gated | $3.1977 | $0.324 | $15.9886 | base-usdc,chat,claude,code,coding,fast,github,json,low-cost,math,monitored,openai-compatible,reasoning,response-auth,sonnet,surplus,tasks,tools,value,verified | — |
| Xcat 0xbc33…b75f | 36 | gated | $0.60 | $0.60 | $3.00 | — | openai-chat-completions |
| Meridian AI 0x8c8c…06f5 | 22 | gated | $1.3606 | $1.3606 | $6.8029 | chat,coding,reasoning | openai-chat-completions |
| api.contactboxtools.me 0x8144…6487 | 13 | gated | $0.18 | $0.03 | $0.82 | chat,coding,reasoning | openai-chat-completions |
| bartly.eth64.de 0x666e…4666 | 10 | gated | $1.10 | $0.35 | $5.50 | chat,coding,reasoning,vision,multimodal,tools,long-context,web-search,function-calling | openai-chat-completions |
| Hana Gateway ✅ 0x4ae1…117b | 5 | gated | $0.12 | $0.12 | $0.60 | chat,coding,fast,tools | openai-chat-completions |
| antseed-neon-puma-944e 0x6650…944e | 3 | gated | $1.2276 | $0.36 | $6.138 | chat,coding,math | openai-chat-completions |
| antseed-opal-badger-2580 0xc85d…2580 | 1 | gated | $1.80 | $1.80 | $9.00 | chat | openai-chat-completions |
| AntFeed 0xddb6…1442 | 0 | gated | $3.30 | $3.30 | $16.50 | chat,coding,reasoning,long-context | openai-chat-completions |
| Apex TEE Test 0xe672…7955 | 0 | gated | $0.54 | $0.54 | $2.70 | chat,reasoning,coding,vision,multimodal,long-context,agents,tasks,legal,study,translate | openai-chat-completions |
| Leftermute 0x388b…5389 | 0 | gated | $0.3272 | $0.3272 | $1.6362 | chat,coding,json,reasoning,tools | openai-chat-completions |
| Clanker Seller 0x7179…a55b | 0 | gated | $0.16 | $0.16 | $0.65 | chat,coding,reasoning | 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 = on-chain trust (0-100). "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.