๐Ÿ‘ด BackInMyDay

AI-era software archaeology โ€” Find out what the LLM landscape looked like when your code was written.

PyPI Python License: MIT CI Publish GitHub Pages

bimd scans a Git repository, finds its first commit date, and tells you which AI era your project was born in โ€” complete with the models that existed at the time and sarcastic boomer-developer commentary.

Installation

pip install backinmyday

Requires Python 3.10+

Getting Started

Scan the current repo

bimd scan .

 ____             _    ___       __  __       ____
| __ )  __ _  ___| | _|_ _|_ __ |  \/  |_   _|  _ \  __ _ _   _
|  _ \ / _` |/ __| |/ /| || '_ \| |\/| | | | | | | |/ _` | | | |
| |_) | (_| | (__|   < | || | | | |  | | |_| | |_| | (_| | |_| |
|____/ \__,_|\___|_|\_\___|_| |_|_|  |_|\__, |____/ \__,_|\__, |
                                         |___/             |___/

  ๐Ÿ“…  Date analysed  : 2026-05-09
  ๐Ÿท๏ธ   Era detected   : The Agentic Era (agent_era)

       ๐Ÿค– Models available at the time
โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”ณโ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”ณโ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”“
โ”ƒ Model                  โ”ƒ Released   โ”ƒ Organization    โ”ƒ
โ”กโ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ•‡โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ•‡โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”ฉ
โ”‚ o3-mini                โ”‚ 2025-01-31 โ”‚ OpenAI          โ”‚
โ”‚ Claude 3.7 Sonnet      โ”‚ 2025-02-24 โ”‚ Anthropic       โ”‚
โ”‚ GPT-4.5                โ”‚ 2025-02-27 โ”‚ OpenAI          โ”‚
โ”‚ ...                    โ”‚            โ”‚                 โ”‚
โ””โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”ดโ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”ดโ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”˜

  ๐Ÿ‘ด "Vibe coding 2.0: now the agent vibe-codes for you
      while you sip your coffee."

Time-travel to any date

bimd era 2019-06-15

Shows the BERT era with GPT-2, XLNet, and a grumpy reminder that "GPT-2 was too dangerous to release."

Generate a badge for your README

bimd badge .

Outputs a shields.io Markdown snippet you can paste into your README:

BackInMyDay Era

Switch language

bimd -l fr scan .          # French output
export BIMD_LANG=fr        # or set it globally

Supported: en (default), fr.

Commands

Command Description
bimd scan [PATH] Scan a Git repo and display its AI era
bimd era <DATE|HASH> Show the AI era for any date or commit hash
bimd badge [PATH] Generate a shields.io badge for the repo's era

How it works

  1. Reads the first commit date from your Git history
  2. Matches it against 11 AI eras (pre-Transformer โ†’ Agentic Era)
  3. Shows 42 verified models with release dates, orgs, and context window sizes
  4. Delivers a sarcastic boomer-developer quip for good measure

The era database lives in bimd/eras.yaml. Model dates are sourced from official provider docs โ€” see SOURCES.md for full provenance.

Contributing

PRs welcome! To add models or eras, edit bimd/eras.yaml and run the tests:

pip install -e ".[dev]"
pytest

Links

License

MIT

Key dates

PyPI data
Data sourced directly from PyPI's database.
  • Released:
Latest release

1 maintainer

PyPI data
Data sourced directly from PyPI's database.
Avatar for famat from gravatar.com famat

Credits

Author: Fran-cois

License expression

MIT
View SPDX License List

Requires

Python >=3.10

Provides Extra

dev

Tags

ai archaeology cli git history llm

Classifiers

Report project as malware

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The following attestation bundles were made for backinmyday-0.1.0-py3-none-any.whl:

Publisher: publish.yml on Fran-cois/BIMD

Attestations: Values shown here reflect the state when the release was signed and may no longer be current.

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0.1.0 This release

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