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aider/aider/models.py

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import difflib
import importlib.resources
import json
import math
import os
import platform
import sys
import time
from dataclasses import dataclass, fields
from pathlib import Path
from typing import Optional
import json5
import yaml
from PIL import Image
from aider.dump import dump # noqa: F401
from aider.llm import litellm
DEFAULT_MODEL_NAME = "gpt-4o"
ANTHROPIC_BETA_HEADER = "prompt-caching-2024-07-31,pdfs-2024-09-25"
OPENAI_MODELS = """
gpt-4
gpt-4o
gpt-4o-2024-05-13
gpt-4-turbo-preview
gpt-4-0314
gpt-4-0613
gpt-4-32k
gpt-4-32k-0314
gpt-4-32k-0613
gpt-4-turbo
gpt-4-turbo-2024-04-09
gpt-4-1106-preview
gpt-4-0125-preview
gpt-4-vision-preview
gpt-4-1106-vision-preview
gpt-4o-mini
gpt-4o-mini-2024-07-18
gpt-3.5-turbo
gpt-3.5-turbo-0301
gpt-3.5-turbo-0613
gpt-3.5-turbo-1106
gpt-3.5-turbo-0125
gpt-3.5-turbo-16k
gpt-3.5-turbo-16k-0613
"""
OPENAI_MODELS = [ln.strip() for ln in OPENAI_MODELS.splitlines() if ln.strip()]
ANTHROPIC_MODELS = """
claude-2
claude-2.1
claude-3-haiku-20240307
claude-3-5-haiku-20241022
claude-3-opus-20240229
claude-3-sonnet-20240229
claude-3-5-sonnet-20240620
claude-3-5-sonnet-20241022
"""
ANTHROPIC_MODELS = [ln.strip() for ln in ANTHROPIC_MODELS.splitlines() if ln.strip()]
# Mapping of model aliases to their canonical names
MODEL_ALIASES = {
# Claude models
"sonnet": "claude-3-5-sonnet-20241022",
"haiku": "claude-3-5-haiku-20241022",
"opus": "claude-3-opus-20240229",
# GPT models
"4": "gpt-4-0613",
"4o": "gpt-4o",
"4-turbo": "gpt-4-1106-preview",
"35turbo": "gpt-3.5-turbo",
"35-turbo": "gpt-3.5-turbo",
"3": "gpt-3.5-turbo",
# Other models
"deepseek": "deepseek/deepseek-chat",
"r1": "deepseek/deepseek-reasoner",
"flash": "gemini/gemini-2.0-flash-exp",
}
@dataclass
class ModelSettings:
# Model class needs to have each of these as well
name: str
edit_format: str = "whole"
weak_model_name: Optional[str] = None
use_repo_map: bool = False
send_undo_reply: bool = False
lazy: bool = False
reminder: str = "user"
examples_as_sys_msg: bool = False
extra_params: Optional[dict] = None
cache_control: bool = False
caches_by_default: bool = False
use_system_prompt: bool = True
use_temperature: bool = True
streaming: bool = True
editor_model_name: Optional[str] = None
editor_edit_format: Optional[str] = None
remove_reasoning: Optional[str] = None
# Load model settings from package resource
MODEL_SETTINGS = []
with importlib.resources.open_text("aider.resources", "model-settings.yml") as f:
model_settings_list = yaml.safe_load(f)
for model_settings_dict in model_settings_list:
MODEL_SETTINGS.append(ModelSettings(**model_settings_dict))
class ModelInfoManager:
MODEL_INFO_URL = (
"https://raw.githubusercontent.com/BerriAI/litellm/main/"
"model_prices_and_context_window.json"
)
CACHE_TTL = 60 * 60 * 24 # 24 hours
def __init__(self):
self.cache_dir = Path.home() / ".aider" / "caches"
self.cache_file = self.cache_dir / "model_prices_and_context_window.json"
self.content = None
self._load_cache()
def _load_cache(self):
try:
self.cache_dir.mkdir(parents=True, exist_ok=True)
if self.cache_file.exists():
cache_age = time.time() - self.cache_file.stat().st_mtime
if cache_age < self.CACHE_TTL:
self.content = json.loads(self.cache_file.read_text())
except OSError:
pass
def _update_cache(self):
try:
import requests
response = requests.get(self.MODEL_INFO_URL, timeout=5)
if response.status_code == 200:
self.content = response.json()
try:
self.cache_file.write_text(json.dumps(self.content, indent=4))
except OSError:
pass
except Exception as ex:
print(str(ex))
try:
# Save empty dict to cache file on failure
self.cache_file.write_text("{}")
except OSError:
pass
def get_model_from_cached_json_db(self, model):
if not self.content:
self._update_cache()
if not self.content:
return dict()
info = self.content.get(model, dict())
if info:
return info
pieces = model.split("/")
if len(pieces) == 2:
info = self.content.get(pieces[1])
if info and info.get("litellm_provider") == pieces[0]:
return info
return dict()
def get_model_info(self, model):
cached_info = self.get_model_from_cached_json_db(model)
litellm_info = None
if litellm._lazy_module or not cached_info:
try:
litellm_info = litellm.get_model_info(model)
except Exception as ex:
if "model_prices_and_context_window.json" not in str(ex):
print(str(ex))
if litellm_info:
return litellm_info
return cached_info
model_info_manager = ModelInfoManager()
class Model(ModelSettings):
def __init__(self, model, weak_model=None, editor_model=None, editor_edit_format=None):
# Map any alias to its canonical name
model = MODEL_ALIASES.get(model, model)
self.name = model
self.max_chat_history_tokens = 1024
self.weak_model = None
self.editor_model = None
# Find the extra settings
self.extra_model_settings = next(
(ms for ms in MODEL_SETTINGS if ms.name == "aider/extra_params"), None
)
self.info = self.get_model_info(model)
# Are all needed keys/params available?
res = self.validate_environment()
self.missing_keys = res.get("missing_keys")
self.keys_in_environment = res.get("keys_in_environment")
max_input_tokens = self.info.get("max_input_tokens") or 0
# Calculate max_chat_history_tokens as 1/16th of max_input_tokens,
# with minimum 1k and maximum 8k
self.max_chat_history_tokens = min(max(max_input_tokens / 16, 1024), 8192)
self.configure_model_settings(model)
if weak_model is False:
self.weak_model_name = None
else:
self.get_weak_model(weak_model)
if editor_model is False:
self.editor_model_name = None
else:
self.get_editor_model(editor_model, editor_edit_format)
def get_model_info(self, model):
return model_info_manager.get_model_info(model)
def _copy_fields(self, source):
"""Helper to copy fields from a ModelSettings instance to self"""
for field in fields(ModelSettings):
val = getattr(source, field.name)
setattr(self, field.name, val)
def configure_model_settings(self, model):
# Look for exact model match
exact_match = False
for ms in MODEL_SETTINGS:
# direct match, or match "provider/<model>"
if model == ms.name:
self._copy_fields(ms)
exact_match = True
break # Continue to apply overrides
model = model.lower()
# If no exact match, try generic settings
if not exact_match:
self.apply_generic_model_settings(model)
# Apply override settings last if they exist
if self.extra_model_settings and self.extra_model_settings.extra_params:
# Initialize extra_params if it doesn't exist
if not self.extra_params:
self.extra_params = {}
# Deep merge the extra_params dicts
for key, value in self.extra_model_settings.extra_params.items():
if isinstance(value, dict) and isinstance(self.extra_params.get(key), dict):
# For nested dicts, merge recursively
self.extra_params[key] = {**self.extra_params[key], **value}
else:
# For non-dict values, simply update
self.extra_params[key] = value
def apply_generic_model_settings(self, model):
if ("llama3" in model or "llama-3" in model) and "70b" in model:
self.edit_format = "diff"
self.use_repo_map = True
self.send_undo_reply = True
self.examples_as_sys_msg = True
return # <--
if "gpt-4-turbo" in model or ("gpt-4-" in model and "-preview" in model):
self.edit_format = "udiff"
self.use_repo_map = True
self.send_undo_reply = True
return # <--
if "gpt-4" in model or "claude-3-opus" in model:
self.edit_format = "diff"
self.use_repo_map = True
self.send_undo_reply = True
return # <--
if "gpt-3.5" in model or "gpt-4" in model:
self.reminder = "sys"
return # <--
if "3.5-sonnet" in model or "3-5-sonnet" in model:
self.edit_format = "diff"
self.use_repo_map = True
self.examples_as_sys_msg = True
self.reminder = "user"
return # <--
if model.startswith("o1-") or "/o1-" in model:
self.use_system_prompt = False
self.use_temperature = False
return # <--
if (
"qwen" in model
and "coder" in model
and ("2.5" in model or "2-5" in model)
and "32b" in model
):
self.edit_format = "diff"
self.editor_edit_format = "editor-diff"
self.use_repo_map = True
if model.startswith("ollama/") or model.startswith("ollama_chat/"):
self.extra_params = dict(num_ctx=8 * 1024)
return # <--
# use the defaults
if self.edit_format == "diff":
self.use_repo_map = True
return # <--
def __str__(self):
return self.name
def get_weak_model(self, provided_weak_model_name):
# If weak_model_name is provided, override the model settings
if provided_weak_model_name:
self.weak_model_name = provided_weak_model_name
if not self.weak_model_name:
self.weak_model = self
return
if self.weak_model_name == self.name:
self.weak_model = self
return
self.weak_model = Model(
self.weak_model_name,
weak_model=False,
)
return self.weak_model
def commit_message_models(self):
return [self.weak_model, self]
def get_editor_model(self, provided_editor_model_name, editor_edit_format):
# If editor_model_name is provided, override the model settings
if provided_editor_model_name:
self.editor_model_name = provided_editor_model_name
if editor_edit_format:
self.editor_edit_format = editor_edit_format
if not self.editor_model_name or self.editor_model_name == self.name:
self.editor_model = self
else:
self.editor_model = Model(
self.editor_model_name,
editor_model=False,
)
if not self.editor_edit_format:
self.editor_edit_format = self.editor_model.edit_format
return self.editor_model
def tokenizer(self, text):
return litellm.encode(model=self.name, text=text)
def token_count(self, messages):
if type(messages) is list:
try:
return litellm.token_counter(model=self.name, messages=messages)
except Exception as err:
print(f"Unable to count tokens: {err}")
return 0
if not self.tokenizer:
return
if type(messages) is str:
msgs = messages
else:
msgs = json.dumps(messages)
try:
return len(self.tokenizer(msgs))
except Exception as err:
print(f"Unable to count tokens: {err}")
return 0
def token_count_for_image(self, fname):
"""
Calculate the token cost for an image assuming high detail.
The token cost is determined by the size of the image.
:param fname: The filename of the image.
:return: The token cost for the image.
"""
width, height = self.get_image_size(fname)
# If the image is larger than 2048 in any dimension, scale it down to fit within 2048x2048
max_dimension = max(width, height)
if max_dimension > 2048:
scale_factor = 2048 / max_dimension
width = int(width * scale_factor)
height = int(height * scale_factor)
# Scale the image such that the shortest side is 768 pixels long
min_dimension = min(width, height)
scale_factor = 768 / min_dimension
width = int(width * scale_factor)
height = int(height * scale_factor)
# Calculate the number of 512x512 tiles needed to cover the image
tiles_width = math.ceil(width / 512)
tiles_height = math.ceil(height / 512)
num_tiles = tiles_width * tiles_height
# Each tile costs 170 tokens, and there's an additional fixed cost of 85 tokens
token_cost = num_tiles * 170 + 85
return token_cost
def get_image_size(self, fname):
"""
Retrieve the size of an image.
:param fname: The filename of the image.
:return: A tuple (width, height) representing the image size in pixels.
"""
with Image.open(fname) as img:
return img.size
def fast_validate_environment(self):
"""Fast path for common models. Avoids forcing litellm import."""
model = self.name
if model in OPENAI_MODELS or model.startswith("openai/"):
var = "OPENAI_API_KEY"
elif model in ANTHROPIC_MODELS or model.startswith("anthropic/"):
var = "ANTHROPIC_API_KEY"
else:
return
if os.environ.get(var):
return dict(keys_in_environment=[var], missing_keys=[])
def validate_environment(self):
res = self.fast_validate_environment()
if res:
return res
# https://github.com/BerriAI/litellm/issues/3190
model = self.name
res = litellm.validate_environment(model)
if res["keys_in_environment"]:
return res
if res["missing_keys"]:
return res
provider = self.info.get("litellm_provider", "").lower()
if provider == "cohere_chat":
return validate_variables(["COHERE_API_KEY"])
if provider == "gemini":
return validate_variables(["GEMINI_API_KEY"])
if provider == "groq":
return validate_variables(["GROQ_API_KEY"])
return res
def get_repo_map_tokens(self):
map_tokens = 1024
max_inp_tokens = self.info.get("max_input_tokens")
if max_inp_tokens:
map_tokens = max_inp_tokens / 8
map_tokens = min(map_tokens, 4096)
map_tokens = max(map_tokens, 1024)
return map_tokens
def register_models(model_settings_fnames):
files_loaded = []
for model_settings_fname in model_settings_fnames:
if not os.path.exists(model_settings_fname):
continue
if not Path(model_settings_fname).read_text().strip():
continue
try:
with open(model_settings_fname, "r") as model_settings_file:
model_settings_list = yaml.safe_load(model_settings_file)
for model_settings_dict in model_settings_list:
model_settings = ModelSettings(**model_settings_dict)
existing_model_settings = next(
(ms for ms in MODEL_SETTINGS if ms.name == model_settings.name), None
)
if existing_model_settings:
MODEL_SETTINGS.remove(existing_model_settings)
MODEL_SETTINGS.append(model_settings)
except Exception as e:
raise Exception(f"Error loading model settings from {model_settings_fname}: {e}")
files_loaded.append(model_settings_fname)
return files_loaded
def register_litellm_models(model_fnames):
files_loaded = []
for model_fname in model_fnames:
if not os.path.exists(model_fname):
continue
try:
data = Path(model_fname).read_text()
if not data.strip():
continue
model_def = json5.loads(data)
if not model_def:
continue
# only load litellm if we have actual data
litellm._load_litellm()
litellm.register_model(model_def)
except Exception as e:
raise Exception(f"Error loading model definition from {model_fname}: {e}")
files_loaded.append(model_fname)
return files_loaded
def validate_variables(vars):
missing = []
for var in vars:
if var not in os.environ:
missing.append(var)
if missing:
return dict(keys_in_environment=False, missing_keys=missing)
return dict(keys_in_environment=True, missing_keys=missing)
def sanity_check_models(io, main_model):
problem_main = sanity_check_model(io, main_model)
problem_weak = None
if main_model.weak_model and main_model.weak_model is not main_model:
problem_weak = sanity_check_model(io, main_model.weak_model)
problem_editor = None
if (
main_model.editor_model
and main_model.editor_model is not main_model
and main_model.editor_model is not main_model.weak_model
):
problem_editor = sanity_check_model(io, main_model.editor_model)
return problem_main or problem_weak or problem_editor
def sanity_check_model(io, model):
show = False
if model.missing_keys:
show = True
io.tool_warning(f"Warning: {model} expects these environment variables")
for key in model.missing_keys:
value = os.environ.get(key, "")
status = "Set" if value else "Not set"
io.tool_output(f"- {key}: {status}")
if platform.system() == "Windows":
io.tool_output(
"Note: You may need to restart your terminal or command prompt for `setx` to take"
" effect."
)
elif not model.keys_in_environment:
show = True
io.tool_warning(f"Warning for {model}: Unknown which environment variables are required.")
if not model.info:
show = True
io.tool_warning(
f"Warning for {model}: Unknown context window size and costs, using sane defaults."
)
possible_matches = fuzzy_match_models(model.name)
if possible_matches:
io.tool_output("Did you mean one of these?")
for match in possible_matches:
io.tool_output(f"- {match}")
return show
def fuzzy_match_models(name):
name = name.lower()
chat_models = set()
for orig_model, attrs in litellm.model_cost.items():
model = orig_model.lower()
if attrs.get("mode") != "chat":
continue
provider = attrs.get("litellm_provider", "").lower()
if not provider:
continue
provider += "/"
if model.startswith(provider):
fq_model = orig_model
else:
fq_model = provider + orig_model
chat_models.add(fq_model)
chat_models.add(orig_model)
chat_models = sorted(chat_models)
# exactly matching model
# matching_models = [
# (fq,m) for fq,m in chat_models
# if name == fq or name == m
# ]
# if matching_models:
# return matching_models
# Check for model names containing the name
matching_models = [m for m in chat_models if name in m]
if matching_models:
return sorted(set(matching_models))
# Check for slight misspellings
models = set(chat_models)
matching_models = difflib.get_close_matches(name, models, n=3, cutoff=0.8)
return sorted(set(matching_models))
def print_matching_models(io, search):
matches = fuzzy_match_models(search)
if matches:
io.tool_output(f'Models which match "{search}":')
for model in matches:
io.tool_output(f"- {model}")
else:
io.tool_output(f'No models match "{search}".')
def get_model_settings_as_yaml():
from dataclasses import fields
import yaml
model_settings_list = []
# Add default settings first with all field values
defaults = {}
for field in fields(ModelSettings):
defaults[field.name] = field.default
defaults["name"] = "(default values)"
model_settings_list.append(defaults)
# Sort model settings by name
for ms in sorted(MODEL_SETTINGS, key=lambda x: x.name):
# Create dict with explicit field order
model_settings_dict = {}
for field in fields(ModelSettings):
value = getattr(ms, field.name)
if value != field.default:
model_settings_dict[field.name] = value
model_settings_list.append(model_settings_dict)
# Add blank line between entries
model_settings_list.append(None)
# Filter out None values before dumping
yaml_str = yaml.dump(
[ms for ms in model_settings_list if ms is not None],
default_flow_style=False,
sort_keys=False, # Preserve field order from dataclass
)
# Add actual blank lines between entries
return yaml_str.replace("\n- ", "\n\n- ")
def main():
if len(sys.argv) < 2:
print("Usage: python models.py <model_name> or python models.py --yaml")
sys.exit(1)
if sys.argv[1] == "--yaml":
yaml_string = get_model_settings_as_yaml()
print(yaml_string)
else:
model_name = sys.argv[1]
matching_models = fuzzy_match_models(model_name)
if matching_models:
print(f"Matching models for '{model_name}':")
for model in matching_models:
print(model)
else:
print(f"No matching models found for '{model_name}'.")
if __name__ == "__main__":
main()
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