Model Cost Compare
mergisi/awesome-openclaw-agents
Trigger when the user asks which model to use, wants to compare model costs, says "what's cheapest for this task", "should I use Opus or Sonnet", "can a smaller model handle this", or…
Compare an EV against a comparable gas car on total cost — upfront gap after incentives, energy vs fuel per year, maintenance delta, and the crossover year when the EV pulls ahead (or doesn't).
MITAuto-check passed
Install Ev Vs Gas
$ npx skills add mohitagw15856/pm-claude-skills --skill ev-vs-gas -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install mohitagw15856/pm-claude-skills ev-vs-gas --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/mohitagw15856/pm-claude-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/ev-vs-gas .claude/skills/ev-vs-gas && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "ev-vs-gas" agent skill from https://github.com/mohitagw15856/pm-claude-skills/tree/main/skills/ev-vs-gas into .claude/skills/ev-vs-gas/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ev-vs-gas", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/mohitagw15856/pm-claude-skills/tree/main/skills/ev-vs-gasType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add mohitagw15856/pm-claude-skills --skill ev-vs-gas -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install mohitagw15856/pm-claude-skills ev-vs-gas --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/mohitagw15856/pm-claude-skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/ev-vs-gas .agents/skills/ev-vs-gas && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "ev-vs-gas" agent skill from https://github.com/mohitagw15856/pm-claude-skills/tree/main/skills/ev-vs-gas into .agents/skills/ev-vs-gas/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ev-vs-gas", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add mohitagw15856/pm-claude-skills --skill ev-vs-gas -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install mohitagw15856/pm-claude-skills ev-vs-gas --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/mohitagw15856/pm-claude-skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/ev-vs-gas .cursor/skills/ev-vs-gas && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "ev-vs-gas" agent skill from https://github.com/mohitagw15856/pm-claude-skills/tree/main/skills/ev-vs-gas into .cursor/skills/ev-vs-gas/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ev-vs-gas", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/mohitagw15856/pm-claude-skills.git --path skills/ev-vs-gas--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add mohitagw15856/pm-claude-skills --skill ev-vs-gas -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install mohitagw15856/pm-claude-skills ev-vs-gas --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/mohitagw15856/pm-claude-skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/ev-vs-gas .gemini/skills/ev-vs-gas && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "ev-vs-gas" agent skill from https://github.com/mohitagw15856/pm-claude-skills/tree/main/skills/ev-vs-gas into .gemini/skills/ev-vs-gas/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ev-vs-gas", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install mohitagw15856/pm-claude-skills ev-vs-gasInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add mohitagw15856/pm-claude-skills --skill ev-vs-gas -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/mohitagw15856/pm-claude-skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/ev-vs-gas .github/skills/ev-vs-gas && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "ev-vs-gas" agent skill from https://github.com/mohitagw15856/pm-claude-skills/tree/main/skills/ev-vs-gas into .github/skills/ev-vs-gas/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ev-vs-gas", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add mohitagw15856/pm-claude-skills --skill ev-vs-gas -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install mohitagw15856/pm-claude-skills ev-vs-gas --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/mohitagw15856/pm-claude-skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/ev-vs-gas .opencode/skills/ev-vs-gas && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "ev-vs-gas" agent skill from https://github.com/mohitagw15856/pm-claude-skills/tree/main/skills/ev-vs-gas into .opencode/skills/ev-vs-gas/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ev-vs-gas", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
ev-vs-gas- GitHub stars
- 1.4k
- Token cost
- ~1.3k tokens
- SKILL.md length
- 683 words
- Files
- 2 (incl. scripts)
- Skills in repo
- 1,348
- Repo updated
- First seen
- Licence
- MIT
At a glance
Compare an EV against a comparable gas car on total cost — upfront gap after incentives, energy vs fuel per year, maintenance delta, and the crossover year when the EV pulls ahead (or doesn't).
- Asked is an EV worth it
- SKILL.md covers What This Skill Produces, Required Inputs, Programmatic Helper and Framework: The…, plus 8 more sections
- Runs Python scripts from its folder; calls python3
- EV vs gas total cost
What it does
Ev Vs Gas is an agent skill from mohitagw15856/pm-claude-skills. Compare an EV against a comparable gas car on total cost — upfront gap after incentives, energy vs fuel per year, maintenance delta, and the crossover year when the EV pulls ahead (or doesn't). Use when asked is an EV worth it, EV vs gas total cost, when does an EV pay for itself, or should my next car be electric. Produces the year-by-year cumulative comparison from the script, the crossover year, the per-mile energy math, and the honest not-modeled list.
Its SKILL.md is about 1.3k tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files, including scripts (for example `scripts/ev_vs_gas.py`).
The repository describes itself as: 1255 professional Agent Skills for Claude, ChatGPT, Gemini, Cursor & Codex — PRDs, postmortems, leases, medical bills, layoffs, go-bags, new countries. Plain markdown, MIT, in… The licence is MIT.
When your agent uses it
- Asked is an EV worth it
- EV vs gas total cost
- Does an EV pay for itself
- Should my next car be electric
Example prompts
- “/ev-vs-gas”
Requirements
- Python 3
What it can do on your machine
Read from SKILL.md and the folder at commit 1cbf1f0. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
Ships 1 file in scripts/ (Python), which the agent can run.
Shell commands in SKILL.md call:
python3
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Ev Vs Gas loads about 1.3k tokens when it runs. Until then it costs about 118 tokens; SKILL.md has 683 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); the scripts in this folder are not scanned.
SKILL.md
The full file from mohitagw15856/pm-claude-skills at commit 1cbf1f0, republished under its MIT licence (© mohitagw15856). 683 words, ~1,337 tokens.
Download SKILL.mdSave it as
.claude/skills/ev-vs-gas/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.- name
- ev-vs-gas
- description
- Compare an EV against a comparable gas car on total cost — upfront gap after incentives, energy vs fuel per year, maintenance delta, and the crossover year when the EV pulls ahead (or doesn't). Use when asked is an EV worth it, EV vs gas total cost, when does an EV pay for itself, or should my next car be electric. Produces the year-by-year cumulative comparison from the script, the crossover year, the per-mile energy math, and the honest not-modeled list.
EV vs Gas Skill
The EV question is a crossover question: a higher price tag melting under lower running costs, with the answer living in your numbers — miles driven, electricity price (home vs. public charging are different products), and how long you keep cars. This skill runs the cumulative math year by year and reports where the lines cross, then is honest about what the model can't see: battery risk, a resale market still finding its feet, and the charger install that belongs in the purchase price.
What This Skill Produces
- The cumulative table — EV vs gas total cost per year over the horizon, from the script
- The crossover year — where the EV pulls ahead, or the finding that it doesn't within the horizon
- The per-year energy math — miles ÷ efficiency × price, both sides, shown not asserted
- The not-modeled list — battery, resale, charger install, price drift — stated up front
Required Inputs
Ask for these if not provided:
- The two candidates' prices — the actual EV and the comparable gas car (same class — comparing a luxury EV to an economy gas car answers a different question); applicable incentives, flagged as verify-eligibility
- Annual miles — the single biggest lever; low-mileage drivers should see how far the crossover moves
- Electricity reality — home charging rate if they have it, or an honest blended rate if they'd rely on public charging (often 2–3× home rates — it can erase the fuel advantage; say so)
- Ownership horizon — a crossover at year 6 means opposite things to a 3-year and a 10-year keeper
Programmatic Helper
python3 scripts/ev_vs_gas.py --ev-price 42000 --gas-price 33000 --incentive 7500
python3 scripts/ev_vs_gas.py --ev-price 42000 --gas-price 33000 --miles 15000 --kwh-price 0.16 --gas-price-gal 3.60 --jsonDeterministic. Defaults are labeled and overridable: 3.3 mi/kWh, 32 mpg, $0.15/kWh, $3.50/gal, maintenance $500 vs $900, +$150/yr EV insurance. Home-charger install cost belongs added to --ev-price.
Framework: The Honest-Comparison Rules
- Comparable cars or no comparison — the EV premium is only measurable against the same class and trim ambition
- Charging mix is the hidden variable — a driveway and a garage outlet make the EV case; apartment dwellers on public fast-charging should run the number with the real blended rate and often watch the advantage halve
- Miles drive everything — the crossover year scales inversely with annual miles; run 8k/12k/16k when the user is unsure, because the answer often flips inside that range
- Incentives are real but conditional — income caps, model eligibility, lease pass-throughs; count them at face value only with the verify flag attached
- The not-modeled items are not tie-breakers, they're error bars — battery warranty terms and resale uncertainty argue for humility near close calls, not for either side automatically
Show full SKILL.md (271 more words)Show less
Output Format
EV vs Gas: [candidates] over [N] years
The Table and the Crossover
[Script output: upfront gap, per-year deltas, cumulative table, crossover year]
Reading It
[Two sentences: what the crossover means against their stated ownership horizon, and which input the answer is most hostage to — usually miles or charging mix.]
Sensitivity
[The crossover at miles −25% / stated / +25%, or home-vs-public charging rates — one line each]
What This Model Ignores
Battery replacement risk (and its warranty) · resale-value differences in an evolving market · home-charger install (add it to the EV price) · fuel/electricity price drift · the non-financials (driving feel, emissions, refueling time) — which are allowed to decide close calls.
Educational model, not financial advice — verify with a licensed professional before acting on it.
Quality Checks
- The gas comparator is genuinely the same vehicle class
- Charging mix is asked about, and public-heavy charging is priced honestly
- The crossover is read against the user's stated ownership horizon
- At least one sensitivity line varies miles or charging rate
- Incentives carry the verify-eligibility flag
Anti-Patterns
- Do not compare across vehicle classes and call it an EV premium
- Do not default everyone to home-charging rates — it's the assumption that most flatters the EV
- Do not present the crossover as a verdict for short-horizon owners — before the crossover, the gas car is winning, and some owners live entirely there
- Do not let advocacy (either direction) into the arithmetic — the model is agnostic; the not-modeled list keeps it honest
- Do not model fuel/electricity price predictions — drift is named, not forecast
Example Trigger Phrases
- "Is an EV worth it?"
- "Does an EV pay for itself?"
- "Should my next car be electric?"
© mohitagw15856, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
SKILL.md and 1 other file (scripts) in skills/ev-vs-gas of mohitagw15856/pm-claude-skills.
- SKILL.md
- scripts/ev_vs_gas.py
Open the folder on GitHubat commit 1cbf1f0
Compare with similar skills
Ev Vs Gas next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Ev Vs Gas this skillmohitagw15856/pm-claude-skills | 1.4k | — | ~1.3k | Automated safety check: Pass | MIT | |
| Model Cost Comparemergisi/awesome-openclaw-agents | 4k | — | ~1k | Automated safety check: Pass | MIT | |
| Cost Conversationruvnet/ruflo | 74k | — | ~407 | Automated safety check: Notes | MIT | |
| Model Cost Comparenyldn/claude-octopus | 4.2k | 1 repos | ~718 | Automated safety check: Pass | MIT | |
| Cost Trackingaffaan-m/ECC | 277k | 1 repos | ~1.3k | Automated safety check: Pass | MIT | |
| Cost Summaryruvnet/ruflo | 74k | — | ~594 | Automated safety check: Notes | MIT |
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Questions about Ev Vs Gas
What does Ev Vs Gas do?
Compare an EV against a comparable gas car on total cost — upfront gap after incentives, energy vs fuel per year, maintenance delta, and the crossover year when the EV pulls ahead (or doesn't). Ev Vs Gas is an agent skill from mohitagw15856/pm-claude-skills. Compare an EV against a comparable gas car on total cost — upfront gap after incentives, energy vs fuel per year, maintenance delta, and the crossover year when the EV pulls ahead (or doesn't).
When should I use Ev Vs Gas?
Ev Vs Gas fits situations like: asked is an EV worth it; EV vs gas total cost; does an EV pay for itself; should my next car be electric.
How do I install Ev Vs Gas in Claude Code?
Run `npx skills add mohitagw15856/pm-claude-skills --skill ev-vs-gas -a claude-code`. Or copy the skill folder (skills/ev-vs-gas in mohitagw15856/pm-claude-skills) into .claude/skills/ev-vs-gas in your project. Claude Code loads it when a task matches its description.
How do I install Ev Vs Gas in Codex?
Run `npx skills add mohitagw15856/pm-claude-skills --skill ev-vs-gas -a codex`. Or copy the skill folder (skills/ev-vs-gas in mohitagw15856/pm-claude-skills) into .agents/skills/ev-vs-gas in your project. Codex loads it when a task matches its description.
Can I use Ev Vs Gas in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add mohitagw15856/pm-claude-skills --skill ev-vs-gas -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/ev-vs-gas, .gemini/skills/ev-vs-gas, .github/skills/ev-vs-gas and .opencode/skills/ev-vs-gas in your project.
What does Ev Vs Gas need to run?
Going by SKILL.md and its folder, Ev Vs Gas needs Python for the scripts in its folder and the command-line tools its instructions call (python3). Our summary lists: Python 3.
Does Ev Vs Gas access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Ev Vs Gas safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. The check reads SKILL.md only: the scripts in the folder are not scanned, so read them before running anything.
What licence does Ev Vs Gas use?
Ev Vs Gas is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Ev Vs Gas use?
About 1.3k tokens (SKILL.md is roughly 5.3k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Ev Vs Gas?
Skills that share tags, products or a category with Ev Vs Gas: Model Cost Compare (mergisi/awesome-openclaw-agents, 4k stars), Cost Conversation (ruvnet/ruflo, 74k stars), Model Cost Compare (nyldn/claude-octopus, 4.2k stars) and Cost Tracking (affaan-m/ECC, 277k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Ev Vs Gas?
mohitagw15856 (a GitHub user) maintains it in mohitagw15856/pm-claude-skills, which has 1,434 GitHub stars. The repository holds 1,348 skills in this directory. The repository was last updated on October 9, 2026.
Source: mohitagw15856/pm-claude-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.