toko 0.2.1

A token counting cli tool and package

Toko

Toko is a token counting tool. It is built for use as a CLI, and available as a Python package.

Highlights

• Accurate token counting for OpenAI models out of the box, with optional support for Anthropic, Google, xAI, Mistral, Llama, DeepSeek, and Qwen families.
• Reads inline text, stdin, files, directories (respects .gitignore automatically), and URLs.
• Compare multiple models in one run and add cost estimates powered by bundled genai-prices data.
• Emits text, json, csv, or tsv output. When stdout is piped, Toko automatically switches to TSV so you can chain tools like cut or awk.
• Caches counts in SQLite under your platform cache folder (e.g. ~/.cache/toko) so repeated runs avoid redundant API calls.

Install

Toko targets Python 3.14 and ships as a uv tool.

Quick install

uv tool install toko

This places a toko executable on your PATH. Run uv tool upgrade toko to pick up new releases.

Optional providers

Install extras when you need additional providers:

# HuggingFace tokenizers for Llama, DeepSeek, Qwen families
uv tool install 'toko[transformers]'

# Official Mistral tokenizer (mistral-common)
uv tool install 'toko[mistral]'

# Everything above in one go
uv tool install 'toko[all]'

If you are adding Toko to a project environment instead of the global toolchain, replace uv tool install with uv add.

Source checkout (contributors)

git clone https://github.com/moredatarequired/toko
cd toko
just setup  # installs lefthook git hooks

Quick start

Options in examples appear before any paths. typer/click treat everything after the first path argument as data input, so prefer toko --total-only src instead of toko src --total-only.

Count inline text

toko --model gpt-5 --text "hello world"

2

If you omit --model, Toko falls back to your configured default. Fresh installs ship with gpt-5; override this in config.toml if your workflow needs a different model.

Read a file

toko --model gpt-5 LICENSE

┏━━━━━━━━━┳━━━━━━━┓
┃ File    ┃ gpt-5 ┃
┡━━━━━━━━━╇━━━━━━━┩
│ LICENSE │   223 │
└─────────┴───────┘

Token counts will change if the file contents change.

Stream from stdin

printf 'hello world' | toko --model gpt-5

2

When stdout is not a TTY (for example, when piping into another command) Toko emits TSV automatically and drops the header unless you pass --header.

Compare models and estimate cost

toko --header --format tsv --model gpt-5-mini --model claude-opus-4-5 --text "The quick brown fox" --cost

model	tokens	cost
gpt-5-mini	4	$0.000005
claude-opus-4-5	11	$0.000055

Costs come from the bundled genai-prices feed. Models without pricing information display N/A.

Work with directories, URLs, and filters

toko --exclude '**/__pycache__/*' src/

┏━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┳━━━━━━━━┓
┃ File                                 ┃  gpt-5 ┃
┡━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━╇━━━━━━━━┩
│ src/toko/__init__.py                 │     11 │
│ src/toko/cache.py                    │    758 │
│ src/toko/cli.py                      │  3,372 │
│ src/toko/config.py                   │    584 │
│ src/toko/cost.py                     │  1,325 │
│ src/toko/counter.py                  │  3,445 │
│ src/toko/data/__init__.py            │      8 │
│ src/toko/data/openrouter_models.json │    359 │
│ src/toko/file_reader.py              │  1,120 │
│ src/toko/formatters.py               │  2,226 │
│ src/toko/models.py                   │  4,211 │
│ src/toko/price_update.py             │    403 │
│ TOTAL                                │ 17,822 │
└──────────────────────────────────────┴────────┘

• Directories are processed recursively by default and honor .gitignore.
• Use --no-recursive to stay shallow and --no-ignore to include ignored files.

Machine-readable output

Toko can emit structured output without post-processing.

toko --model gpt-5 --format json LICENSE

{
  "LICENSE": {
    "gpt-5": 223
  }
}

toko --header --model gpt-5 --format csv --text "hello world"

model,tokens
gpt-5,2

Use --format tsv to force TSV even when running interactively.

Know which models are available

toko --list-models | head -n 5

anthropic/claude-3-5-haiku-20241022
anthropic/claude-3-5-sonnet-20240620
anthropic/claude-3-5-sonnet-20241022
anthropic/claude-3-7-sonnet-20250219
anthropic/claude-3-haiku-20240307

API keys and optional providers

Some providers require API credentials to access token counting endpoints:

• Anthropic – set ANTHROPIC_API_KEY
• Google Gemini/Gemma – set GOOGLE_API_KEY

Some providers use tokenizers available on Hugging Face; these may need authentication to download the appropriate tokenizer.

• HuggingFace-hosted models (Llama, DeepSeek, Qwen) – install toko[transformers] and ensure huggingface-cli login (or set HF_TOKEN) if the model needs authentication.
• Mistral – install toko[mistral]; no API key is required for offline tokenization.

Environment variables can be exported directly, stored in a .env file and loaded with uv run --env-file, or placed in the config file described below.

To mix providers, provide every required key. For example:

ANTHROPIC_API_KEY=sk-ant-... toko --model gpt-5 --model claude-sonnet-4-5 --text "Launch checklist" --cost

Configuration

Toko reads configuration from $XDG_CONFIG_HOME/toko/config.toml (defaults to ~/.config/toko/config.toml). A minimal example:

[toko]
default_model = "gpt-5"
default_format = "text"
respect_gitignore = true
auto_update_prices = false # fetch latest pricing when cached data is stale

[toko.exclude]
patterns = ["*.log", "*.tmp", "**/__pycache__/*"]

[toko.api_keys]
anthropic = "sk-ant-..."
openai = "sk-..."

Config values act as defaults; command-line flags always win.

Caching and pricing data

• Counts are cached in $XDG_CACHE_HOME/toko/token_cache.db.
• Pricing data from genai-prices is stored alongside the package. When auto_update_prices is true, Toko silently refreshes the cache if data is older than a day. Fetch failures never abort your command.

Development tasks

just lint          # Ruff check & format
just typecheck     # ty type checking
just test          # run "fast" tests
just check-all     # run the full set of checks

License

MIT