{"type":"post","id":"claude-haiku-5-5-is-now-available-in-5555fb","slug":"claude-haiku-5-5-is-now-available-in-5555fb","title":"Claude Haiku 5.5 is now available in Cursor!","description":"## Context length turns a low-cost model into a workload-design question","retrieval_nugget":"## Context length turns a low-cost model into a workload-design question","published_at":"2026-10-07","updated_at":"2026-10-07","record_date":"2026-10-07","date_kind":"published_at","topics":["claude"],"source_urls":["https://prod.cursor.com/docs/models/claude-haiku-5-5"],"schema_version":"newruntime-agent-readable-v0.2","stable_id":"post:claude-haiku-5-5-is-now-available-in-5555fb","status":"published","visuals":[],"editorial_provenance":{"schema_version":"newruntime-editorial-copy-v1","content_status":"source_grounded_final","final_copy_sha256":"sha256:569f9741e1037e60858203d8324f33d75e4f91ed12a1eda1cae5b4243143cbb3","reviewed_at":"2026-10-07T20:07:12.855Z","source_evidence_count":1,"verified_claim_count":3,"site_analysis_schema_version":"newruntime-site-analysis-v1","site_object_kind":"field_note","observed_fact_count":3,"implication_count":1,"watch_condition_count":1,"related_record_count":0},"analysis":{"schema_version":"newruntime-site-analysis-v1","object_kind":"field_note","thesis":"Cursor’s listing of Claude Haiku 5.5 makes context length a material part of the model’s cost decision for agent workflows.","observed_facts":[{"text":"Cursor documentation says Claude Haiku 5.5 can be added from Cursor Settings → Models and supports context windows up to 1 million tokens.","source_urls":["https://prod.cursor.com/docs/models/claude-haiku-5-5"]},{"text":"Cursor lists $0.10 per million input tokens and $0.50 per million output tokens up to 100,000 input tokens, with rates five times higher above that threshold.","source_urls":["https://prod.cursor.com/docs/models/claude-haiku-5-5"]},{"text":"Cursor reports a 48.4% CursorBench score at maximum effort.","source_urls":["https://prod.cursor.com/docs/models/claude-haiku-5-5"]}],"mechanism":"Cursor prices requests above 100,000 input tokens at five times its standard rates, so long-context sessions face a distinct per-token cost tier even though the model supports context windows up to 1 million tokens.","why_now":"Cursor has added the model to Settings → Models and published both its rates and its own benchmark figures, giving users actionable terms to evaluate.","implications":["Teams using Haiku 5.5 in long agent sessions should account for the higher tier rather than extrapolating the short-request price."],"evidence_boundary":"These prices and the CursorBench result are claims in Cursor’s documentation; the source does not independently establish comparative cost or performance in production workloads.","watch_conditions":["Watch for changes to Cursor’s published 100,000-token threshold, rate schedule, or model availability in the model picker."],"related_records":[],"new_branch_reason":"No prior New Runtime record was supplied, so this begins a distinct analytical record without asserting a connection to other records."},"editor":{"role":"editor","name":"Andrey Reshetnikov","profile":"https://newruntime.com/owner-profile.md","profile_json":"https://newruntime.com/owner-profile.json","same_as":["https://www.linkedin.com/in/reshetnikov1/","https://t.me/lapetuse"]},"routes":{"html":"https://newruntime.com/posts/claude-haiku-5-5-is-now-available-in-5555fb/","markdown":"https://newruntime.com/posts/claude-haiku-5-5-is-now-available-in-5555fb.md","json":"https://newruntime.com/posts/claude-haiku-5-5-is-now-available-in-5555fb.json"},"next_reads":[{"type":"topic","path":"/topics/claude/","url":"https://newruntime.com/topics/claude/","title":"Claude","reason":"Explore the claude topic hub.","media_type":"text/html","markdown_url":"https://newruntime.com/topics/claude.md","json_url":"https://newruntime.com/topics/claude.json"},{"type":"collection","path":"/posts/","url":"https://newruntime.com/posts/","title":"Field Notes","reason":"Open the latest editorial analysis.","media_type":"text/html","json_url":"https://newruntime.com/posts.json"},{"type":"collection","path":"/source-ledger.json","url":"https://newruntime.com/source-ledger.json","title":"Source Ledger","reason":"Inspect the public source evidence graph.","media_type":"application/json"}]}