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release: v3.27.6 - Sonnet 4.6 default + 200K vs 1M context guide

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- Pricing table: Sonnet 4.6 now default (Feb 2026)
- New section: 200K vs 1M context decision guide (MRCR bench, cost table, use cases)
- threat-db.yaml v2.1.0: CVE-2026-23744, Slopsquatting T009, OWASP Agentic AI Top 10

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
Florian BRUNIAUX 2026-02-18 09:33:55 +01:00
parent 4b15bdb137
commit c3da456d3a
8 changed files with 173 additions and 21 deletions
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machine-readable/reference.yaml
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@ -3,7 +3,7 @@
# Source: guide/ultimate-guide.md
# Purpose: Condensed index for LLMs to quickly answer user questions about Claude Code
version: "3.27.5"
version: "3.27.6"
updated: "2026-02-17"
# ════════════════════════════════════════════════════════════════
@ -186,7 +186,7 @@ deep_dive:
third_party_toad: "https://github.com/batrachianai/toad"
third_party_conductor: "https://docs.conductor.build"
# Configuration Management & Backup (Added 2026-02-02)
config_management_guide: "guide/ultimate-guide.md:4085" # Section 3.27.5
config_management_guide: "guide/ultimate-guide.md:4085" # Section 3.27.6
config_hierarchy: "guide/ultimate-guide.md:4095" # Global → Project → Local precedence
config_git_strategy_project: "guide/ultimate-guide.md:4110" # What to commit in .claude/
config_git_strategy_global: "guide/ultimate-guide.md:4133" # Version control ~/.claude/
@ -276,6 +276,12 @@ deep_dive:
fast_mode_api: 10051 # API breaking changes section
fast_mode_pricing: 1722 # Pricing table
fast_mode_behavior: "2.5x faster, 6x price, same Opus 4.6 model"
# Sonnet 4.6 + 1M Context (Feb 2026) - Added 2026-02-18
sonnet_4_6_default: 1741 # Pricing table, Sonnet 4.6 now default
context_200k_vs_1m: 1751 # Decision guide: 200K vs 1M context window
context_200k_vs_1m_perf: "Opus 4.6: 93% @ 256K, 76% @ 1M (MRCR v2). Sonnet 4.6 scores not yet published."
context_200k_vs_1m_cost: "Sonnet 4.6: ~$0.23 bug fix, ~$0.75 module refactor, ~$2.25 full 1M session"
context_1m_beta_requirement: "API only, requires anthropic-beta header. Opus: pricing doubles >200K."
# Debug Command (v2.1.30+) - Added 2026-02-09
debug_command: 16280 # /debug in commands table
debug_purpose: "Systematic troubleshooting and error investigation"
@ -1205,7 +1211,7 @@ ecosystem:
- "Cross-links modified → Update all 4 repos"
history:
- date: "2026-01-20"
event: "Code Landing sync v3.27.5, 66 templates, cross-links"
event: "Code Landing sync v3.27.6, 66 templates, cross-links"
commit: "5b5ce62"
- date: "2026-01-20"
event: "Cowork Landing fix (paths, README, UI badges)"
@ -1217,7 +1223,7 @@ ecosystem:
onboarding_matrix_meta:
version: "2.0.0"
last_updated: "2026-02-05"
aligned_with_guide: "3.27.5"
aligned_with_guide: "3.27.6"
changelog:
- version: "2.0.0"
date: "2026-02-05"
@ -1245,7 +1251,7 @@ onboarding_matrix:
core: [rules, sandbox_native_guide, commands]
time_budget: "5 min"
topics_max: 3
note: "SECURITY FIRST - sandbox before commands (v3.27.5 critical fix)"
note: "SECURITY FIRST - sandbox before commands (v3.27.6 critical fix)"
beginner_15min:
core: [rules, sandbox_native_guide, workflow, essential_commands]
@ -1330,7 +1336,7 @@ onboarding_matrix:
- default: agent_validation_checklist
time_budget: "60 min"
topics_max: 6
note: "Dual-instance pattern for quality workflows (v3.27.5)"
note: "Dual-instance pattern for quality workflows (v3.27.6)"
learn_security:
intermediate_30min:
@ -1341,7 +1347,7 @@ onboarding_matrix:
- default: permission_modes
time_budget: "30 min"
topics_max: 4
note: "NEW goal (v3.27.5) - Security-focused learning path"
note: "NEW goal (v3.27.6) - Security-focused learning path"
power_60min:
core: [sandbox_native_guide, mcp_secrets_management, security_hardening]
@ -1366,7 +1372,7 @@ onboarding_matrix:
core: [rules, sandbox_native_guide, workflow, essential_commands, context_management, plan_mode]
time_budget: "60 min"
topics_max: 6
note: "Security foundation + core workflow (v3.27.5 sandbox added)"
note: "Security foundation + core workflow (v3.27.6 sandbox added)"
intermediate_120min:
core: [plan_mode, agents, skills, config_hierarchy, git_mcp_guide, hooks, mcp_servers]