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Claude Haiku 5.5

● live
Anthropic

Live — Oct 7; $0.10/$0.50 per MTok for prompts up to 100K tokens, $0.50/$2.50 above; cache reads $0.01 / $0.05; 1M ctx / 128K out; knowledge cutoff Jun 2026; in the API, the Claude apps, AWS, Google Cloud and Microsoft Foundry the same day; Anthropic's own table: OSWorld 2.1 72.4% (GPT-6 Luna 48.9%, Haiku 4.5 15.7%), Terminal-Bench 4.0 39.2% (Luna 16.4%); Artificial Analysis Intelligence Index 43 at max effort, #2 of 179 in its price tier (read Oct 7); our sweep fired on claude-haiku-5-5 at 17:52 UTC, OpenRouter listed it at 18:31. On the board as live since 2026-10-07 — the watchers keep tracking it: lineup changes, pricing moves and deprecations all alert.

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Timeline

2026-10-07
Claude Haiku 5.5 verified live — detected in a live catalog, alert fired at 17:52:45 UTCverified
2026-10-07
Claude Haiku 5.5 is out at $0.10 / $0.50, a tenth of Haiku 4.5's pricepost

Anthropic released Claude Haiku 5.5 on October 7 as claude-haiku-5-5, on the Claude API, Amazon Bedrock, Google Cloud, Microsoft Foundry and in the Claude apps.

On the bench index

LMArena: 1,587.8LiveBench: 69.9Vals AI: 58.7Artificial Analysis: 36.2AW Index: 53.2

full comparison table →

Coding leaderboard

#11 of 43 on the coding index, at 70.8 · combines LMArena · Coding, LiveBench · Coding, Vals Vibe Code Bench

the AI coding leaderboard →

The official word

We alert on verified API behavior, never on announcements alone — but when Anthropic speaks, it's here: anthropic.com/news ↗

Where to use Claude Haiku 5.5

34 providers list Claude Haiku 5.5 in the models.dev catalog (as of 2026-10-28), under the model ids shown below.

Anthropicclaude-haiku-5-5
Amazon Bedrockanthropic.claude-haiku-5-5 · au.anthropic.claude-haiku-5-5 · eu.anthropic.claude-haiku-5-5
Vertexclaude-haiku-5-5@default
Vertex (Anthropic)claude-haiku-5-5@default
Azureclaude-haiku-5-5
Azure Cognitive Servicesclaude-haiku-5-5
OpenRouteranthropic/claude-haiku-5.5
Vercel AI Gatewayanthropic/claude-haiku-5.5
302.AIclaude-haiku-5-5
AI/ML APIanthropic/claude-haiku-5.5
AIHubMixclaude-haiku-5-5
Aixyanthropic/claude-haiku-5-5

Also listed by Cloudflare AI Gateway, CommandCode, Cortecs, CrossModel, DevPass (LLM Gateway), Eden AI, GitHub Copilot, GitLab Duo, Kilo Gateway, LLM Gateway, Merge Gateway, NanoGPT, NEAR AI Cloud, Neon, Ofox, OpenCode, OpenCode Go, Perplexity Agent, Requesty, Standard Compute, Venice AI, Vivgrid.

Listings cover the model family, so a provider may list a sibling tier under the same name. Check the id before you build on it.

Try it first-hand on Anthropic's own Claude Console playground ↗

Claude Haiku 5.5: quick answers

Is Claude Haiku 5.5 out?

Yes. Claude Haiku 5.5 is live and has been since October 7, 2026.

When was Claude Haiku 5.5 released?

October 7, 2026.

Is Claude Haiku 5.5 good for coding?

On the ArtificialWatch coding index it scores 70.8, #11 of 43 ranked models. The index combines LMArena · Coding, LiveBench · Coding and Vals Vibe Code Bench, taking the median of each model's percentile across them.

Who makes Claude Haiku 5.5?

Anthropic. ArtificialWatch also tracks Claude Sonnet 5.5, Claude Opus 5.5, Fable 5.1, Mythos 5.1, Claude Opus 5, Fable 5, Claude Sonnet 5 and Mythos 5 from Anthropic.

Where can I use Claude Haiku 5.5?

34 providers list it in the models.dev catalog, including Anthropic, Amazon Bedrock, Vertex, Vertex (Anthropic) and Azure. The exact model ids each one lists are on this page.

How much does Claude Haiku 5.5 cost?

Anthropic's own API lists Claude Haiku 5.5 (claude-haiku-5-5) at $0.10 per million input tokens and $0.50 per million output tokens, and $0.01 per million cached input tokens. Prompts over 100K tokens cost $0.50 input and $2.50 output. Prices as published in the models.dev catalog, as of 2026-10-28.

What is Claude Haiku 5.5's context window?

1M tokens, with up to 128K output tokens per response, as Anthropic lists Claude Haiku 5.5 (claude-haiku-5-5).

Every live model's API price, side by side → · What a workload costs on Anthropic models →

Head to head

Claude Haiku 5.5 vs Claude Sonnet 5.5Claude Haiku 5.5 vs GPT-6 LunaClaude Haiku 5.5 vs Claude Opus 5.5Claude Haiku 5.5 vs Gemini 3.8 FlashClaude Haiku 5.5 vs GPT-6.1 Terra

More from Anthropic

Claude Sonnet 5.5live since 2026-09-28
Claude Opus 5.5live since 2026-09-22
Fable 5.1live since 2026-09-01
Mythos 5.1live since 2026-09-01
Claude Opus 5live since 2026-07-24
Fable 5live since 2026-07-01
Claude Sonnet 5live since 2026-06-30
Mythos 5live since 2026-06-09

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