The full text
The whole documents, one page each, exactly as they were sent.
Prompt capture
v2.1.197 system prompt
3 added and 3 removed, of 222 lines, about 124 words, in the prompt 17 of 27 arms receive. 2 other prompts also changed. 1 of 24 tool descriptions changed. Compared against v2.1.196.
The two arm counts on this page measure different things: 17 arms receive the prompt the headline is about, and the widest edit below reached 23, because the same changed lines sit in more than one prompt.
- You are powered by the model named Sonnet 5. The exact model ID is claude-sonnet-5.
System prompt, reached 23 of 27 arms +1 −1 of 59 lines
This edit reached 23 of 27 arms: (unset), claude-opus-4-0, claude-opus-4-1, opus, claude-3-5-haiku, claude-3-5-sonnet, claude-3-7-sonnet, claude-3-opus, claude-fable-5, claude-haiku-4-5, claude-mythos-5, claude-opus-4-5, claude-opus-4-6, claude-opus-4-7, claude-opus-4-8, claude-opus-5, claude-opus-5[1m], claude-sonnet-4-0, claude-sonnet-4-5, claude-sonnet-4-6, default, haiku, sonnet[1m]
The same edit landed in 19 other copies of this prompt, which differ from this one only in text interpolated per model.
from line 49
- OS Version: Linux 5.15.0-187-generic - You are powered by the model named Opus 4.8 (1M context). The exact model ID is claude-opus-4-8[1m]. - Assistant knowledge cutoff is January 2026. - - The most recent Claude models are Fable 5 and the Claude 4.X family. Model IDs — Fable 5: 'claude-fable-5', Opus 4.8: 'claude-opus-4-8', Sonnet 4.6: 'claude-sonnet-4-6', Haiku 4.5: 'claude-haiku-4-5-20251001'. When building AI applications, default to the latest and most capable Claude models. + - The most recent Claude models are the Claude 5 family, Opus 4.8, and Haiku 4.5. Model IDs — Fable 5: 'claude-fable-5', Opus 4.8: 'claude-opus-4-8', Sonnet 5: 'claude-sonnet-5', Haiku 4.5: 'claude-haiku-4-5-20251001'. When building AI applications, default to the latest and most capable Claude models. - Claude Code is available as a CLI in the terminal, desktop app (Mac/Windows), web app (claude.ai/code), and IDE extensions (VS Code, JetBrains). - Fast mode for Claude Code uses Claude Opus with faster output (it does not downgrade to a smaller model). It can be toggled with /fast and is available on Opus 4.8/4.7.
System prompt, Sonnet +3 −3 of 222 lines
This edit reached 2 of 27 arms: opusplan, sonnet
from line 210
- Platform: linux - Shell: unknown - OS Version: Linux 5.15.0-187-generic - - You are powered by the model named Sonnet 4.6. The exact model ID is claude-sonnet-4-6. - - Assistant knowledge cutoff is August 2025. - - The most recent Claude models are Fable 5 and the Claude 4.X family. Model IDs — Fable 5: 'claude-fable-5', Opus 4.8: 'claude-opus-4-8', Sonnet 4.6: 'claude-sonnet-4-6', Haiku 4.5: 'claude-haiku-4-5-20251001'. When building AI applications, default to the latest and most capable Claude models. + - You are powered by the model named Sonnet 5. The exact model ID is claude-sonnet-5. + - Assistant knowledge cutoff is January 2026. + - The most recent Claude models are the Claude 5 family, Opus 4.8, and Haiku 4.5. Model IDs — Fable 5: 'claude-fable-5', Opus 4.8: 'claude-opus-4-8', Sonnet 5: 'claude-sonnet-5', Haiku 4.5: 'claude-haiku-4-5-20251001'. When building AI applications, default to the latest and most capable Claude models. - Claude Code is available as a CLI in the terminal, desktop app (Mac/Windows), web app (claude.ai/code), and IDE extensions (VS Code, JetBrains). - Fast mode for Claude Code uses Claude Opus with faster output (it does not downgrade to a smaller model). It can be toggled with /fast and is available on Opus 4.8/4.7.
System prompt, Sonnet 5 +3 −2 of 222 lines
This edit reached 1 of 27 arms: claude-sonnet-5
from line 210
- Platform: linux - Shell: unknown - OS Version: Linux 5.15.0-187-generic - - You are powered by the model claude-sonnet-5. - - The most recent Claude models are Fable 5 and the Claude 4.X family. Model IDs — Fable 5: 'claude-fable-5', Opus 4.8: 'claude-opus-4-8', Sonnet 4.6: 'claude-sonnet-4-6', Haiku 4.5: 'claude-haiku-4-5-20251001'. When building AI applications, default to the latest and most capable Claude models. + - You are powered by the model named Sonnet 5. The exact model ID is claude-sonnet-5. + - Assistant knowledge cutoff is January 2026. + - The most recent Claude models are the Claude 5 family, Opus 4.8, and Haiku 4.5. Model IDs — Fable 5: 'claude-fable-5', Opus 4.8: 'claude-opus-4-8', Sonnet 5: 'claude-sonnet-5', Haiku 4.5: 'claude-haiku-4-5-20251001'. When building AI applications, default to the latest and most capable Claude models. - Claude Code is available as a CLI in the terminal, desktop app (Mac/Windows), web app (claude.ai/code), and IDE extensions (VS Code, JetBrains). - Fast mode for Claude Code uses Claude Opus with faster output (it does not downgrade to a smaller model). It can be toggled with /fast and is available on Opus 4.8/4.7.
System prompt, Sonnet +3 −2 of 222 lines
This edit reached 1 of 27 arms: claude-sonnet-5[1m]
from line 210
- Platform: linux - Shell: unknown - OS Version: Linux 5.15.0-187-generic - - You are powered by the model claude-sonnet-5[1m]. - - The most recent Claude models are Fable 5 and the Claude 4.X family. Model IDs — Fable 5: 'claude-fable-5', Opus 4.8: 'claude-opus-4-8', Sonnet 4.6: 'claude-sonnet-4-6', Haiku 4.5: 'claude-haiku-4-5-20251001'. When building AI applications, default to the latest and most capable Claude models. + - You are powered by the model named Sonnet 5. The exact model ID is claude-sonnet-5[1m]. + - Assistant knowledge cutoff is January 2026. + - The most recent Claude models are the Claude 5 family, Opus 4.8, and Haiku 4.5. Model IDs — Fable 5: 'claude-fable-5', Opus 4.8: 'claude-opus-4-8', Sonnet 5: 'claude-sonnet-5', Haiku 4.5: 'claude-haiku-4-5-20251001'. When building AI applications, default to the latest and most capable Claude models. - Claude Code is available as a CLI in the terminal, desktop app (Mac/Windows), web app (claude.ai/code), and IDE extensions (VS Code, JetBrains). - Fast mode for Claude Code uses Claude Opus with faster output (it does not downgrade to a smaller model). It can be toggled with /fast and is available on Opus 4.8/4.7.
Bash, reached 2 of 27 arms +2 −2 of 123 lines
This edit reached 2 of 27 arms: claude-sonnet-5, claude-sonnet-5[1m]
from line 63
3. Run the following commands in parallel: - Add relevant untracked files to the staging area. - Create the commit with a message ending with: - Co-Authored-By: Claude <[email protected]> + Co-Authored-By: Claude Sonnet 5 <[email protected]> - Run git status after the commit completes to verify success. Note: git status depends on the commit completing, so run it sequentially after the commit. 4. If the commit fails due to pre-commit hook: fix the issue and create a NEW commit
from line 80
git commit -m "$(cat <<'EOF' Commit message here. - Co-Authored-By: Claude <[email protected]> + Co-Authored-By: Claude Sonnet 5 <[email protected]> EOF )" </example>
Bash, Sonnet +2 −2 of 123 lines
This edit reached 2 of 27 arms: opusplan, sonnet
from line 63
3. Run the following commands in parallel: - Add relevant untracked files to the staging area. - Create the commit with a message ending with: - Co-Authored-By: Claude Sonnet 4.6 <[email protected]> + Co-Authored-By: Claude Sonnet 5 <[email protected]> - Run git status after the commit completes to verify success. Note: git status depends on the commit completing, so run it sequentially after the commit. 4. If the commit fails due to pre-commit hook: fix the issue and create a NEW commit
from line 80
git commit -m "$(cat <<'EOF' Commit message here. - Co-Authored-By: Claude Sonnet 4.6 <[email protected]> + Co-Authored-By: Claude Sonnet 5 <[email protected]> EOF )" </example>