BlockWeave Concise

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Don't compare $/MTok alone. Compare $ per accepted Python function (and tokens the frontier must read).

Take 30 seconds: same prompts, two columns — quality, completion tokens, and generation $.

Panel summary panel result · n=12

Static Option A scoreboard (P0). Numbers are lab panel results, not list price and not a guarantee on every prompt.

BlockWeave path
strong concise pack		 Flash-class + thin pack
default cheap use
Ship @ quality ≥75 92% 92%
Mean quality % 91.4 85.3
Mean completion tokens 86.9 648.3 ~7.46×
Mean gen $ / prompt (actual) $0.000035 $0.000177 ~5.08×

On this panel, flash-class + thin pack used about 7.46× the completion tokens and about 5.08× the generation $ per prompt vs the BlockWeave strong-pack path — at similar ship rate.

Examples (same prompt both sides)

Example 1 — Write a Python function to expand a user path that may start with ~ and return an absolute pathlib P…

Prompt (same both sides): Write a Python function to expand a user path that may start with ~ and return an absolute pathlib Path object.

BlockWeave path

  • Completion tokens: 107
  • Gen $ (actual): $0.000045
  • Quality %: 95
from pathlib import Path
import os

def expand_user_path(path: str) -> Path:
    """Expand a user path that may start with ~ and return an absolute pathlib Path object."""
    return Path(os.path.expanduser(path)).resolve()

Flash-class + thin pack

  • Completion tokens: 1500
  • Gen $ (actual): $0.000436
  • Quality %: 88
Here's a Python function that expands a leading `~` (or `~user`) and returns an absolute `pathlib.Path`:

```python
from pathlib import Path

def expand_user_path(path: str | Path) -> Path:
    """
    Expand a user path that may start with ~ and return an absolute Path.

    Handles:
      - '~/documents'  -> /home/username/documents
      - '~other/file'  -> /home/other/file (if that user exists)
      - relative paths -> made absolute against the current working directory
      - absolute paths -> returned unchanged (after ~ expansion)

    Args:
        path: A string or Path object.

    Returns:
        An absolute pathlib.Path object.
    """
    # Convert to Path, expand ~ and ~user
    expanded = Path(path).expanduser()

    # If still relative, anchor it to the current working directory
    if not expanded.is_absolute():
        expanded = Path.cwd() / expanded

    return expanded
```

**Usage example:**

```python
>>> expand_user_path("~/projects/notes.txt")
PosixPath('/home/alice/projects/notes.txt')

>>> expand_user_path("docs/report.pdf")
PosixPath('/home/alice/current/working/dir/docs/report.pdf')
```

**Notes:**
- `Path.expanduser()` handles both `~` and `~username`.
- The function does **not** resolve symlinks or
Example 2 — Write a Python function to convert a Unix timestamp in seconds to an aware UTC datetime object.

Prompt (same both sides): Write a Python function to convert a Unix timestamp in seconds to an aware UTC datetime object.

BlockWeave path

  • Completion tokens: 76
  • Gen $ (actual): $0.000028
  • Quality %: 95
from datetime import datetime, timezone

def unix_timestamp_to_utc_datetime(timestamp):
    """
    Convert a Unix timestamp in seconds to an aware UTC datetime object.
    
    Args:
        timestamp (int or float): Unix timestamp in seconds
        
    Returns:
        datetime: Aware UTC datetime object
    """
    return datetime.fromtimestamp(timestamp, tz=timezone.utc)

Flash-class + thin pack

  • Completion tokens: 541
  • Gen $ (actual): $0.000167
  • Quality %: 95
Here's a Python function that converts a Unix timestamp (in seconds) to an aware UTC `datetime` object:

```python
from datetime import datetime, timezone

def unix_timestamp_to_utc(timestamp: float) -> datetime:
    """
    Convert a Unix timestamp (seconds since epoch) to an aware UTC datetime.

    Args:
        timestamp: Unix timestamp in seconds (int or float).

    Returns:
        An aware datetime object with UTC timezone.
    """
    return datetime.fromtimestamp(timestamp, tz=timezone.utc)
```

### Usage example:
```python
>>> unix_timestamp_to_utc(1700000000)
datetime.datetime(2023, 11, 14, 22, 13, 20, tzinfo=datetime.timezone.utc)
```

### Why this works:
- `datetime.fromtimestamp(timestamp, tz=timezone.utc)` creates a datetime in the specified timezone (UTC) directly.
- The returned object is **aware** because it includes a `tzinfo` set to `timezone.utc`.
- The function accepts both integers and floats; fractional seconds are preserved as microseconds.

If you prefer a more explicit alternative (though slightly less direct), you could use:

```python
def unix_timestamp_to_utc(timestamp: float) -> datetime:
    from datetime import datetime, timezone
    return datetime.utcfromtimestamp(timestamp).replace(tzinfo=timezone.utc)
```

But the first version is recommended because `utcfromtimestamp()` is considered deprecated in Python 3.12+ and returns a naive datetime that you then have to "attach" timezone info to. The `fromtimestamp(..., tz=...)` approach is cleaner and future-proof.
Example 3 — Write a Python function that ensures a directory exists by creating it and all parent directories if…

Prompt (same both sides): Write a Python function that ensures a directory exists by creating it and all parent directories if needed, then returns the Path object.

BlockWeave path

  • Completion tokens: 189
  • Gen $ (actual): $0.000068
  • Quality %: 92
from pathlib import Path

def ensure_directory_exists(path: str) -> Path:
    """
    Ensure a directory exists by creating it and all parent directories if needed.
    
    Args:
        path (str): The path to the directory to ensure exists
        
    Returns:
        Path: The Path object for the directory
    """
    directory_path = Path(path)
    directory_path.mkdir(parents=True, exist_ok=True)
    return directory_path

Flash-class + thin pack

  • Completion tokens: 609
  • Gen $ (actual): $0.000174
  • Quality %: 95
Below is a Python function that ensures a directory exists, creating it and any missing parent directories as needed, and returns the corresponding `pathlib.Path` object.

```python
from pathlib import Path

def ensure_dir(path):
    """
    Ensure a directory exists at the given path, creating it and all
    missing parent directories if necessary.

    Args:
        path (str or Path): The directory path to ensure.

    Returns:
        Path: The Path object of the ensured directory.

    Raises:
        FileExistsError: If the path exists but is not a directory.
        OSError: If the directory cannot be created (e.g., permission issues).
    """
    p = Path(path)
    p.mkdir(parents=True, exist_ok=True)
    return p
```

### How it works:
- `Path(path)` converts the input to a `pathlib.Path` object.
- `mkdir(parents=True, exist_ok=True)` creates the directory and all intermediate directories.  
  - `parents=True` ensures parent directories are created as needed.  
  - `exist_ok=True` prevents an error if the directory already exists.  
- The function returns the `Path` object for further use.

### Example usage:
```python
# Create a nested directory structure
dir_path = ensure_dir("data/raw/2024")
print(dir_path)  # Output: data/raw/2024
print(dir_path.exists())  # True
print(dir_path.is_dir())  # True
```

### Edge cases:
- If the path already exists as a file, `mkdir` will raise a `FileExistsError` (since `exist_ok=True` only suppresses errors when the path is a directory).
- If the path is empty or `.`, it will ensure the current directory exists (which it always does) and return a `Path('.')`.

This function is safe, concise, and leverages Python's standard library for robust filesystem operations.

Try the product

Model id (planned OpenRouter): blockweave/blockweave-concise

Steady list (M2): $0.15 / $0.60 per MTok (prompt / completion). Win on all-in / $ per job, not sticker alone.

Site: blockweaveconcise.com · API: api.blockweaveconcise.com

Method & fairness

Not a full IDE. Not thr% claims. Not “always cheaper.” Re-run panel when models or packs change; refresh this page from export.