PRE-RELEASE TRACKER Claude Haiku 5.5 Official Announcement Confirmed • Projected Pricing: $0.25 / $1.25 per 1M Tokens!
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HAIKU5.5 AI
Estimate Costs 📊
Official Anthropic Roadmap • Release Radar

CLAUDE HAIKU 5.5

The ultimate developer intelligence hub for Anthropic's next-generation lightweight model. Discover projected API pricing ($0.25/$1.25 per 1M), 140+ tok/s generation velocity, and interactive real-time cost modeling.

📊 Open Cost Calculator 📈 Benchmark Matrix 💵 Pricing Tiers
Input Pricing $0.25 / 1M
Output Pricing $1.25 / 1M
Peak Velocity 145 tok/s
Prompt Cache -90% Discount
Interactive Simulation Tool

Real-Time API Cost Calculator

Estimate your monthly cloud LLM expenses and see how much you save using Claude Haiku 5.5:

⚡ Live Dynamic Recalculation
25,000,000
1M Tokens 50M 100M 200M Tokens
5,000,000
500K 10M 25M 50M Tokens
Best Price / Perf
Claude Haiku 5.5
$9.38
Estimated / month
⚡ 145 tok/s generation
Claude Sonnet 5.5
$112.50
Frontier reasoning
72 tok/s generation
GPT-4o-mini
$6.75
Commodity chat
110 tok/s generation
Gemini 2.5 Flash
$3.38
Multimodal video/audio
160 tok/s generation
💡 Switching from Sonnet 5.5 to Haiku 5.5 saves you $103.12 / month (91.7% cost reduction).
View Pricing Tiers →
Model Lineage

The Claude 5.5 Generation Roadmap

Anthropic restructured its rollout rhythm in late 2026, launching the flagship frontier models first, followed by the high-velocity lightweight tier:

September 22, 2026 ✓ Live

Claude Opus 5.5

The deepest reasoning and creative writing model in Anthropic history. Engineered for complex academic research, multi-layered prose, and mathematical theorem proof.

September 28, 2026 ✓ Live

Claude Sonnet 5.5

The software engineering gold standard. Dominates SWE-bench with advanced agentic tool use and automated pull request resolution capabilities.

October 2026 ● Imminent Launch

Claude Haiku 5.5

Near-Sonnet coding proficiency packaged into sub-second generation speeds. Built for high-volume API pipelines, live IDE completions, and high-concurrency production apps.

Competitive Landscape

Lightweight Model Comparison

Detailed Benchmarks Report →
Model Name Input / Output (per 1M) Context Window Speed Coding Score (HumanEval) Status
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Claude Haiku 5.5 (Upcoming) Anthropic
$0.25 / $1.25 200K / 1M Tokens (Projected) 145 tok/s 88.4% Official Pre-Release
Claude Sonnet 5.5 (September 2026) Anthropic
$3.00 / $15.00 200K Tokens 72 tok/s 94.2% Live
GPT-4o-mini OpenAI
$0.15 / $0.60 128K Tokens 110 tok/s 82% Live
Gemini 2.5 Flash Google
$0.07 / $0.30 1,000K Tokens (1M) 160 tok/s 84.1% Live
Developer FAQ

Frequently Asked Questions

Critical specs, token economics, and integration questions regarding Claude Haiku 5.5.

When will Claude Haiku 5.5 be officially released? +
Anthropic officially confirmed that Claude Haiku 5.5 will launch in the weeks following the September 2026 releases of Claude Opus 5.5 (September 22) and Claude Sonnet 5.5 (September 28). It is positioned as the high-speed, cost-efficient workhorse of the Claude 5.5 model family.
What is the expected pricing for Claude Haiku 5.5? +
Industry analysts and community benchmarks project Haiku 5.5 pricing at approximately $0.25 per million input tokens and $1.25 per million output tokens, with up to a 90% discount on prompt caching reads ($0.025/M tokens) and a 50% discount for asynchronous Message Batches.
How does Claude Haiku 5.5 compare to GPT-4o-mini and Gemini Flash? +
While GPT-4o-mini and Gemini Flash emphasize ultra-low commodity pricing, Claude Haiku 5.5 focuses heavily on frontier code generation and agentic tool use. Internal evaluations indicate Haiku 5.5 achieves near-Sonnet 3.5 coding accuracy (88%+ on HumanEval) while sustaining blistering generation speeds exceeding 140 tokens per second.
What context window size will Haiku 5.5 support? +
Haiku 5.5 launches with a standard 200,000-token context window, with beta access expected for 1,000,000 (1M) tokens to compete directly with Google Gemini long-context architectures.
How do developers access the Haiku 5.5 API? +
Haiku 5.5 is accessible via the standard Anthropic Messages API (`@anthropic-ai/sdk` for TypeScript and `anthropic` for Python) under the model identifier `claude-5-5-haiku-latest`, as well as through Amazon Bedrock and Google Cloud Vertex AI.
Does Haiku 5.5 support Prompt Caching and Computer Use? +
Yes! Haiku 5.5 natively supports Anthropic Prompt Caching (saving up to 90% on repeated system prompts and documentation contexts) and lightweight agentic tool calling (function calling).