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Claude Haiku 5.5 anthropic

Closed weights API only listed on OpenRouter 2026-10-07 (18d ago) · source Last verified 2026-10-25 06:51 UTC Docs ↗ OpenRouter ↗

Release timeline

Stages observed by the nightly radar: announced → API only → weights public → served by third parties. Each entry carries the source it was seen at.

  1. 2026-10-07 · API only source
    seeded from the earliest dated observation when first seen · observed 2026-10-07 20:20 UTC

Description

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...

via OpenRouter listing · observed 2026-10-24 21:26 UTC. The listing text is the provider's own description, not an assessment.

Where to run 5 providers · 10 endpoints

Hosted endpoints observed for Claude Haiku 5.5, sorted by input price (USD per million tokens). Each row names its observer and date; prices change daily, so check the source before quoting. Cheapest observed input price: $0.10/M.

ProviderModel refContextQuant$/M in$/M outtok/sTTFTToolsStatusObserved
Amazon Bedrock
openrouter
anthropic/claude-haiku-5.5 977K unknown $0.10 $0.50 — — yes live 2026-10-24
Anthropic
openrouter
anthropic/claude-haiku-5.5 977K unknown $0.10 $0.50 — — yes live 2026-10-24
Azure
openrouter
anthropic/claude-haiku-5.5 977K unknown $0.10 $0.50 — — yes live 2026-10-24
Claude Platform on AWS
openrouter
anthropic/claude-haiku-5.5 977K unknown $0.10 $0.50 — — yes live 2026-10-24
Google
openrouter
anthropic/claude-haiku-5.5 977K unknown $0.10 $0.50 — — yes live 2026-10-24
Amazon Bedrock
openrouter
anthropic/claude-haiku-5.5 977K unknown $0.11 $0.55 — — yes live 2026-10-24
Amazon Bedrock
openrouter
anthropic/claude-haiku-5.5 977K unknown $0.11 $0.55 — — yes live 2026-10-24
Azure
openrouter
anthropic/claude-haiku-5.5 977K unknown $0.11 $0.55 — — yes live 2026-10-24
Google
openrouter
anthropic/claude-haiku-5.5 977K unknown $0.11 $0.55 — — yes live 2026-10-24
Google
openrouter
anthropic/claude-haiku-5.5 977K unknown $0.11 $0.55 — — yes live 2026-10-24

No third-party providers observed beyond the lab's own endpoints. Cache-read price $0.01/M (source, observed 2026-10-24).

Facts

Context length1,000,000 tokens (977K) · OpenRouter listing
Modalitiestext + image + file → text
Max completion tokens128,000
Supported parametersinclude_reasoning, max_completion_tokens, max_tokens, reasoning, reasoning_effort, response_format, stop, structured_outputs, tool_choice, tools, verbosity
OpennessClosed weights · closed lab
StageAPI only
Confidencemedium
Pricing (USD per M tokens) in $0.10 · out $0.50 · cache read $0.01
OpenRouter list price (cheapest live endpoint) · source · observed 2026-10-24 21:26 UTC

Open alternatives 5

Nearest open-weights models by modality, context and price on this watch list. Not a quality ranking.

ModelOrgParamsContext$/M inLicenseWhy it is here
Kimi-K3 moonshotai 2.78T 1M $0.23 other similar context (1.05M), vision input
MiniMax-M3 MiniMaxAI 427B 1M $0.22 other similar context (1.05M), vision input
GLM-5.3-Flash zai-org 321B 1M $0.02 mit similar context (1.05M), cheaper input price ($0.0175/M vs $0.1/M), vision input
DeepSeek-V4.1-Flash deepseek-ai 763B 1M $0.02 mit similar context (1.05M), cheaper input price ($0.02/M vs $0.1/M), vision input
DeepSeek-V4.1-Flash-1017 deepseek-ai 763B 1M $0.20 mit similar context (1.05M), vision input

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Sources

Radar run: 2026-10-25 06:51 UTC · Last verified 2026-10-25 06:51 UTC