Claude Haiku 5.5 is out
Claude Haiku 5.5: API availability. First seen 7 Oct 2026 Catalogues list a 1,000,000 tokens context window. 20 evidence links.
Facts as of
- Context window
- 1,000,000
- Input · USD / 1M tokens
- $0.10 (Input ≤ 100,000 tokens); $0.50 (Input > 100,000 tokens)
- Output · USD / 1M tokens
- $0.50 (Input ≤ 100,000 tokens); $2.50 (Input > 100,000 tokens)
- Max output
- 128,000
- Input
- text · image
- Output
- text
- Cached input · USD / 1M tokens
- $0.01 (Input ≤ 100,000 tokens); $0.05 (Input > 100,000 tokens)
Alex's take
Evidence links 20
- Claude Code · model idsevidence linknpmjs.com
- Anthropic APIevidence linkdocs.anthropic.com
- Anthropic · model indexevidence linkplatform.claude.com
- Vertex AI · Model Gardenevidence linkconsole.cloud.google.com
- Anthropic · deprecationsevidence linkplatform.claude.com
- Anthropic · sitemapevidence linkanthropic.com
- Vercel AI Gatewayevidence linkvercel.com
- Claude · client model catalogueevidence linkdownloads.claude.ai
- OpenCode Zen · modelsevidence linkopencode.ai
- OpenRouterevidence linkopenrouter.ai
- Artificial Analysis · benchmarksevidence linkartificialanalysis.ai
- OpenRouterevidence linkopenrouter.ai
- OpenCode · discoveryevidence linkopencode.ai
- Command Code · modelsevidence linkcommandcode.ai
- Claude Docsevidence linkplatform.claude.com
- OpenCode Go · modelsevidence linkopencode.ai
- DesignArena · uicomponentevidence linkdesignarena.ai
- models.dev · catalogueevidence linkmodels.dev
- models.dev · catalogueevidence linkmodels.dev
- models.dev · catalogueevidence linkmodels.dev
Related signals
AnthropicSightingClaude Haiku 5.5 (Max, Default Fallback) enters at 43.4 on the Intelligence Index
Confirmed20 evidence links