Claude Haiku 5.5
anthropic/claude-haiku-5.5anthropic/haiku-5.5claude-haiku-5-5Claude-Haiku-5-5claude-haiku-5.5haiku-5-5haiku-5.5- 📏 1M-token context, up from 200K on Haiku 4.5
- 🆕 Max output doubled to 128K tokens
- 🧠 First Haiku with adaptive thinking and effort controls
- ⚡ Built for latency-sensitive routing, classification, extraction, subagents
- 👁️ Handles vision, documents, tool calling, web search
- 🔧 Batches API supports up to 300K output tokens via beta
- 🏢 Anthropic model, released October 2026
- 📚 Newer tokenizer counts ~30% more tokens than 4.5
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 18 more models by Anthropic →Claude Haiku 5.5 is Anthropic's small, fast tier in the Claude 5.5 generation, released in October 2026 and positioned for high-volume, latency-sensitive work: classification, routing, extraction, summarization, conversation compaction, and subagent duty underneath a larger planner model such as Claude Opus 5.5 or Claude Sonnet 5.5. Anthropic explicitly notes that the larger models remain the better fit for complex agentic coding, while Haiku 5.5 targets narrowly scoped tasks that were previously cost-prohibitive at scale.
Against its own predecessor, Haiku 4.5, the changes are concrete. The context window grows from 200K to 1M tokens and maximum output from 64K to 128K, with up to 300K output tokens available on the Message Batches API behind a beta header. It is also the first Haiku to expose effort controls, with adaptive thinking on by default and configurable effort levels; thinking tokens count toward the output limit, so existing token caps may need revisiting.
One migration detail matters: Haiku 5.5 uses the newer tokenizer shared by Claude 4.7 and later models, so identical input text counts roughly 30% more tokens than on Haiku 4.5.
On Venice, the model is offered with reasoning, vision, code-optimized behaviour, function calling, and web search enabled, suited to pipelines that run many short requests rather than a few long ones.
This About section is AI-generated from public sources via VeniceStats + Venice inference, with no human editing. It may contain inaccuracies.
Daily usage · Claude Haiku 5.5 · Organic sellers
Top sellers · Claude Haiku 5.5 · Organic
- 💬 Banter35.0%
- Super Seeder17.3%
- Best15.4%
- STEYG14.4%
- OpenCheap4.3%
- Hana Gateway ✅3.8%
- Others9.7%
| Seller | Health | Rep↓ | Sales | Tokens | Routing | Input $/M | Cached $/M | Output $/M | Save | 1st token | tok/s |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Super Seeder 0xd19f…41f3 | healthy | 89.22 | $2.58 | 86.68M | #4 | $0.125 | $0.0125 | $0.625 | — | — | — |
| 💬 Banter 0x4122…e194 | healthy | 82.88 | $5.23 | 70.81M | #3 | $0.0695 | $0.007 | $0.348 | −30% | — | — |
| ▲ Apex Ant 0x73b4…e736 | healthy | 81.71 | $0.51 | 4.76M | #2 | $0.07 | $0.007 | $0.34 | −30% | — | — |
| Relay Works 0x3040…7139 | — | 54.66 | $0.02 | 248.70k | gated | $0.065 | $0.0065 | $0.325 | −35% | — | — |
| attacompute.ai 0xd5e7…7be0 | healthy | 51.22 | $0.01 | 59.45k | gated | $0.095 | $0.0095 | $0.475 | −5% | — | — |
| ZLKPro-Api 0x0b0b…f446 | healthy | 20.91 | $0.39 | 14.46M | gated | $0.05 | $0.025 | $0.25 | −50% | — | — |
| Vikey Seller 0xe4c4…3c7b | healthy | 16.82 | $0.00 | 442.00 | gated | $0.20 | $0.032 | $1.00 | — | — | — |
| OpenCheap 0x0ee1…6c41 | — | 12.43 | $0.65 | 18.95M | gated | $0.021 | $0.0064 | $0.1176 | −79% | — | — |
| Sapiens 0x1fae…8318 | healthy | 8.20 | $0.00 | 143.00 | gated | $0.0595 | $0.0059 | $0.289 | −41% | — | — |
| bartly.eth64.de 0x666e…4666 | healthy | 7.22 | $0.20 | 5.83M | gated | $0.0071 | $0.0007 | $0.0357 | −93% | — | — |
| SSDA High-Speed AI 0xe1ab…0156 | — | 5.76 | $0.23 | 8.83M | gated | $0.02 | $0.002 | $0.129 | −80% | — | — |
| dealer 0xc46e…8ce6 | — | 2.57 | — | — | gated | $0.7116 | $0.2099 | $3.5577 | — | — | — |
| STEYG 0x0340…90f0 | healthy | 0.49 | $2.16 | 88.19M | gated | $0.02 | $0.0065 | $0.12 | −80% | 3.8 s | 240 |
| surplus-hive 0x6145…5c58 | — | 0.00 | — | — | gated | $0.3038 | $0.3038 | $1.2153 | — | — | — |
| Fire Ant 🔥🐜 0xbe05…bc5d | — | 0.00 | $0.01 | 135.53k | gated | $0.0648 | $0.0065 | $0.3238 | −35% | — | — |
| AIX 0xfa2d…bd40 | healthy | 0.00 | — | — | gated | $0.05 | $0.005 | $0.25 | −50% | — | — |
| LLMart 0x948a…a000 | — | 0.00 | $0.00 | 15.29k | gated | $0.05 | $0.005 | $0.25 | −50% | — | — |
| Best 0x472f…69fd | healthy | 0.00 | $2.31 | 112.96M | gated | $0.0147 | $0.0015 | $0.0735 | −85% | 0.4 s | 125 |
| Venice.ai Proxy 0x1f22…18c9 | failingupstream error · 2.8 h | 86.84 | $0.02 | 285.33k | #1 | $0.055 | $0.0055 | $0.275 | −45% | — | — |
| Hana Gateway ✅ 0x4ae1…117b | failingtiming out · 1 h | 0.00 | $0.57 | 22.65M | gated | $0.025 | $0.005 | $0.125 | −75% | — | — |
"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.