Anthropic

Claude Haiku 5.5

anthropic/claude-haiku-5.5
Released Oct 7, 2026Commercial
ThinkingToolsVisioncommercial cloud

Claude Haiku 5.5 is Anthropic's small, fast model for high-volume, cost-sensitive work such as summarization, subagents, and browser use. It succeeds Claude Haiku 4.5 with stronger coding, computer use, and...

Cost / 1M tokens

Very low usage

$0.10

input

$0.01

cached input

$0.50

output

Context Window

1M

Up to 128K max output

Modalities

text, image, file → text

Claude tokenizer

Quickstart & API

anthropic/claude-haiku-5.5
Open the model picker in ChatOSS Desktop (Code, Kanban, or Chat) and select or paste this model ID.

Best for & Strengths

Key Strengths

Sub-second latency43.4 Intelligence IndexLow cost per token

Recommended Workloads in ChatOSS

  • Fast sub-agents
  • Autocomplete & quick edits
  • High-concurrency pipelines
Available in ChatOSS Code, Kanban Orchestrate, and Chat modes via Plus, Max, or BYOK.

Verified Evaluations

Benchmarks & Frontier Comparison

How Claude Haiku 5.5 compares against leading open-weight and proprietary frontier models across independent agentic coding and reasoning suites.

View full Top 40 Leaderboard →
Benchmark (Metric)Claude Haiku 5.5DeepSeek V4.1 FlashGLM 5.3Kimi K3.1 ProClaude Opus 5.5
Agentic & Software Engineering
ChatOSS Agentic Coding Index (%)—63.2%58.3%65%74.1%
SWE-Bench Verified (%)—91.5%95.4%94.8%97%
DeepSWE v1.1 (Pass@1 %)—77%69%73.5%74.2%
Vibe Code Bench v1.1 (%)—87.7%78.1%88.4%90.3%
Terminal-Bench 4.0 (%)—42.3%42%46.2%65.2%
Code Migration (%)—45.6%44.2%52%66.7%
Intelligence & Token Economics
Artificial Analysis Intelligence Index (0–100)36.539.544.855.157.6
Input Price (/ 1M tokens)$0.10$0.15$1.40$2.00$4.00
Output Price (/ 1M tokens)$0.50$0.60$4.40$10.00$20.00

Artificial Analysis Intelligence Index

Artificial Analysis

36.5

Design Arena: 3D

Design Arena · Rank #14 (56.2% win)

1328 Elo

Design Arena: ASCIIART

Design Arena · Rank #22 (50.9% win)

1216 Elo

Design Arena: Code Generation

Design Arena · Rank #25 (50.3% win)

1277 Elo

Design Arena: Data Visualization

Design Arena · Rank #16 (51.2% win)

1284 Elo

Active Provider Endpoints (10)

Upstream inference providers serving Claude Haiku 5.5, with per-provider pricing, context limits, quantization, and 24-hour uptime.

ProviderInput / 1MOutput / 1MCache Read / 1MContextMax OutputQuantizationUptime (24h)
Google
google-vertex/global
$0.10$0.50$0.011M128K—100.0%
Claude Platform on AWS
claude-on-aws
$0.10$0.50$0.011M128K—100.0%
Azure
azure/global
$0.10$0.50$0.011M128K—100.0%
Anthropic
anthropic
$0.10$0.50$0.011M128K—100.0%
Amazon Bedrock
amazon-bedrock
$0.10$0.50$0.011M128K—100.0%
Google
google-vertex/europe
$0.11$0.55$0.0111M128K—100.0%
Google
google-vertex/us
$0.11$0.55$0.0111M128K—100.0%
Azure
azure/us
$0.11$0.55$0.0111M128K—100.0%
Amazon Bedrock
amazon-bedrock/us-east-1
$0.11$0.55$0.0111M128K—100.0%
Amazon Bedrock
amazon-bedrock/eu-west-1
$0.11$0.55$0.0111M128K—100.0%

Supported API Parameters

Parameters accepted by this model when called through ChatOSS or OpenRouter.

include_reasoningmax_completion_tokensmax_tokensreasoningreasoning_effortresponse_formatstopstructured_outputstool_choicetoolsverbosity

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