Claude Haiku 5.5
anthropic/claude-haiku-5.5- Anthropic
- Family · Claude Haiku 5
- Released 7 Oct 2026
- Text · Image · File → Text
- Reasoning · adjustable
- Tools · JSON · Vision
Not on OSMEXO yet
Spec & list price
Context1M
Max output128K
Input / 1M$0.10
Output / 1M$0.505× input
Scores · standing
Intelligence43.4#26/489
LiveBench69.8#12/32
Usage
Tokens / day301.3B▲ 0.8% 7d
Usage rank#21
Requests / day14.3M
Tool calls / req0.23
Per request · 30 days
Avg input15.3Kabout median
Avg output8101.2× median
Cache hit66%about median
Reasoning share52%about median
Tool-call failures2.9%1.5× median
Consumption
Peak 780.4B 22 OctLow 38.0B 7 OctRank today #21
News & trends
66 mentions this week ▲ 136%this model · videos, posts, articles · 30 days
Trending · 14 days
- Claude Haiku 5.5 is apparently smarter than Grok, Qwen, Deepseek, and all the chinese flagships?198 upvotes
- Is GPT-6.1 Terra Worth 10× More Than Claude Haiku 5.5?1.8K views
- Claude Haiku 5.5 vs 4.5: up to 10x cheaper, 1M context, benchmarks in plain English1.6K views
- @ArtificialAnlys on X89.1K views
- @ArtificialAnlys on X58.3K views
- Inception is introducing Mercury 3, across a range of benchmarks, Mercury 3 outperforms GPT-6 Luna and Claude Haiku 5.5, while running 4–8x faster at 1,000+ tokens per second.78 upvotes
News · latest from Anthropic
- GPT-6.1 Terra vs. Claude Opus 5.5: Cheaper and faster in three tests at maxthenewstack.io · 2 Nov
- Claude Opus 5.5 and Claude Sonnet 5.5 are now available in Google AntigravityGoogle Cloud · 20 Oct
- GLM-5.3 vs. Claude Fable 5 on DeepSWE: Cost, Coding, and RoutingTogether AI · 21 Aug
- DeepSeek V4 Pro 0813 vs Claude Fable 5 on DeepSWE: Cost, Coding, and RoutingTogether AI · 17 Aug
Benchmarks
bar = share of the top score · Benchmark data: Artificial AnalysisSpeed · median across 9 providers, latest day
Output speed#28/334149 tok/s2.3× faster than median
Fastest provider167 tok/sbest of 9 providers
First token#2031.34 s1.3× longer than median
First answer token#99243 sthinking included
#3 cheapest of 15 with a similar score
Value
Intelligence Index
Blended price per 1M tokens (log)
LiveBench suites
Browser69.5
Coding91.4
Data Analysis53.1
Design83.1
Long Agentic40.0
Reasoning82.4
Research81.9
▲ Strongest: Coding, Design. ▼ Weakest: Long Agentic (40).
Technical details
- Reasoning
- on · medium
- Tokenizer
- Claude
- Moderation
- moderated
Reasoning effort
- max
- xhigh
- high
- medium · default
- low
- none
Request parameters 11
- tools
- tool_choice
- response_format
- structured_outputs
- reasoning
- reasoning_effort
- include_reasoning
- max_tokens
- max_completion_tokens
- stop
+1 more
- verbosity
Interesting facts
- Less output room than similar models (128.0K against a 943.7K median).
- Released 26 days ago.
When to use
Best for
- Fast coding help at lower cost
- Design and front-end generation
- Long document question answering
- Sub-agents inside larger agent systems
- Image and file analysis at scale
Think twice for
- Data analysis (its weakest suite)
- Hardest research and reasoning tasks
- Self-hosting (closed weights)
Research papers
- Concordat: Typed Sessions for LLM Agents27 Oct
- AutoEnergyDesign: An LLM-Driven Agent for Automatic Energy System Design Optimization26 Oct
- Latent Coherence: Do Frontier Language Models' Probability Judgments Obey the Law of Total Probability?22 Oct
- EvoSkill v2: Fully Agentic Skill Evolution from Benchmark Adaptation to a Stateful Evolver19 Oct
- Good Judgment, Bad Advice: Decision-Model Controllers Raise Agent Cost Without Improving Success17 Oct
Social
Most watched and discussed · 90 days
- Is GPT-6.1 Terra Worth 10× More Than Claude Haiku 5.5?AI Curve Wars · 1.8K views · 26 Oct
- Claude Haiku 5.5 vs 4.5: up to 10x cheaper, 1M context, benchmarks in plain EnglishArjun Palakkazhi · 1.6K views · 24 Oct
- Бесплатный Claude Haiku 5.5 создал 3D-игру с нуля по одному промпту! #shortsZickam · 1.2K views · 28 Oct
- Claude Haiku 5.5、何が安くなった？公式数字で比較 #AIニュース #ShortsAI検証ラボ · 865 views · 27 Oct
- Claude Haiku 5.5 (7/10/2026): rẻ hơn Sonnet 20 lầnÔng Chú AI Vibe Coder · 848 views · 26 Oct
- Claude Haiku 5.5: rẻ hơn 75% mà giỏi gấp mấy lần? #shortsAI Radar – Tin AI Mỗi Ngày · 747 views · 27 Oct
- Claude Haiku 5.5 Is So Cheap You Can't Burn Through the $100 PlanSmall Context Window · 361 views · 27 Oct
- Claude Haiku 5.5 vs Sonnet 5.5 for Coding: 20x Cheaper, but Good Enough?NextLayer · 316 views · 29 Oct
- Chromatic Loom: MiMo V2.6 Flash vs Claude Haiku 5.5 | Shader Battle 06MerginIT e.U. · 304 views · 22 Oct
- AI 비용 10분의 1, Claude Haiku 5.5 💸시프트 AI · 238 views · 29 Oct
- How Claude haiku 5.5 Is 90% Cheaper Than Other Models 😱Launch AI Tools · 210 views · 24 Oct
- GPT-6.1 Terra vs Claude Haiku 5.5: Is 10× the Price Worth It?AI Curve Wars · 208 views · 26 Oct
Same family
Claude Haiku 5Alternatives
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