upstream: official claude code updates 2026-04-17

[github-actions]

upstream changes detected

sources: anthropic/changelog, anthropic/official-docs, anthropics/claude-code, marckrenn/claude-code-changelog, shanraisshan/claude-code-best-practice
changes found: 23
files edited: 5
staleness flags: 11

what changed upstream

• [release] v2.1.112 (link)
• [commit] bump Claude Code badge to v2.1.112 (Apr 17, 2026 6:37 AM PKT) (link)
• [commit] link Boris Apr 16 tips into README — 6 tips across 3 sections (link)
• [commit] add 6 Tips for Getting More Out of Opus 4.7 from Boris Cherny (Apr 16) (link)
• [commit] rename thariq-16-apr-26 asset folder to thariq-26-4-16 (link)
• [commit] rename thariq-17-mar-26 asset folder to thariq-26-3-17 (link)
• [commit] rename boris-30-mar-26 asset folder to boris-26-3-30 (link)
• [commit] rename boris-25-mar-26 asset folder to boris-26-3-25 (link)
• [commit] rename boris-10-mar-26 asset folder to boris-26-3-10 (link)
• [commit] rename boris-12-feb-26 asset folder to boris-26-2-12 (link)
• [commit] rename boris-1-feb-26 asset folder to boris-26-2-1 (link)
• [commit] v2.1.112 (link)
• [commit] v2.1.112 (link)
• [commit] v2.1.112 - remove (link)
• [commit] v2.1.112 - init (338 tokens) (link)
• [commit] v2.1.112 - init (642 tokens) (link)
• [commit] v2.1.112 - init (636 tokens) (link)
• [commit] v2.1.112 - init (664 tokens) (link)
• [commit] v2.1.112 - init (330 tokens) (link)
• [commit] v2.1.112 - init (324 tokens) (link)
• [commit] v2.1.112 - init (38 tokens) (link)
• [changelog] Claude Code changelog updated (link)
• [docs_change] Official Claude Code docs updated (link)

staleness flags

file	claim	reality	severity
docs/tips/fast-mode.md	fast mode does not switch to a cheaper or smaller model. what changes is the compute budget: less extended thinking time, faster tool calls, quicker responses.	claude code v2.1.111+ introduced /effort levels (low, medium, high, xhigh for opus 4.7) as the primary control for speed vs intelligence tradeoff. fast mode exists but /effort is now the documented mechanism.	medium
docs/tips/ultrathink.md	force claude code into extended thinking mode for complex problems	v2.1.111 introduced /effort command with multiple levels (low, medium, high, xhigh). xhigh is now the explicit effort level for extended thinking, replacing the 'ultrathink' keyword pattern.	high
docs/tips/plan-mode.md	plan mode forces Claude to think before acting	v2.1.111+ introduces /effort xhigh as explicit extended thinking control. plan mode and /effort are now separate levers.	low
docs/tips/session-length.md	compaction rates and session economics based on implicit thinking budgets	v2.1.111 introduces explicit /effort levels that directly control thinking vs speed tradeoff. session length efficiency now varies by effort level, not just duration.	medium
docs/cost.md	model pricing (march 2026) with fixed input/output rates per model	v2.1.111 introduces opus 4.7 with xhigh effort level. pricing table needs opus 4.7 row. effort levels may affect token consumption.	medium
docs/tips/README.md	ultrathink tip exists as documented technique	v2.1.111 replaces ultrathink keyword pattern with /effort command. tip should reference /effort instead.	high
docs/comparisons/antigravity.md	last verified: 2026-04-09	claude code v2.1.112 released 2026-04-17. docs are 8 days stale.	low
docs/comparisons/cursor.md	last verified: 2026-04-09	claude code v2.1.112 released 2026-04-17. docs are 8 days stale.	low
docs/comparisons/codex.md	last verified: 2026-04-09	claude code v2.1.112 released 2026-04-17. docs are 8 days stale.	low
docs/comparisons/gemini.md	last verified: 2026-04-09	claude code v2.1.112 released 2026-04-17. docs are 8 days stale.	low
docs/comparisons/pricing.md	last verified: 2026-04-09	claude code v2.1.112 released 2026-04-17. docs are 8 days stale.	low

proposed edits

• docs/tips/ultrathink.md: /effort command replaces ultrathink keyword pattern as of v2.1.111
• docs/tips/ultrathink.md: document the cost/quality tradeoff of xhigh vs default
• docs/tips/fast-mode.md: /effort command (v2.1.111+) is the primary mechanism for speed/thinking tradeoff
• docs/tips/plan-mode.md: document how /effort (v2.1.111+) pairs with plan mode
• docs/cost.md: flag that pricing table needs opus 4.7 entry after v2.1.111 release
• docs/tips/session-length.md: document that /effort (v2.1.111+) affects session economics
• docs/comparisons/antigravity.md: update verification date to april 17 2026 after v2.1.112 release
• docs/comparisons/cursor.md: update verification date to april 17 2026 after v2.1.112 release
• docs/comparisons/codex.md: update verification date to april 17 2026 after v2.1.112 release
• docs/comparisons/gemini.md: update verification date to april 17 2026 after v2.1.112 release
• docs/comparisons/pricing.md: update verification date to april 17 2026 after v2.1.112 release

review checklist

• staleness flags accurate?
• version numbers and pricing correct?
• proposed edits read naturally?

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