diff --git a/models/__init__.py b/models/__init__.py
new file mode 100644
index 0000000..b310600
--- /dev/null
+++ b/models/__init__.py
@@ -0,0 +1,47 @@
+"""Pydantic models for Commander AI Lab API."""
+
+from models.requests import (
+    StartRequest,
+    ImportUrlRequest,
+    ImportTextRequest,
+    MetaFetchRequest,
+    CreateDeckRequest,
+    UpdateDeckRequest,
+    AddDeckCardRequest,
+    PatchDeckCardRequest,
+    BulkAddRequest,
+    BulkAddRecommendedRequest,
+    DeckGenerationSourceConfig,
+    DeckGenerationRequest,
+    DeckGenV3Request,
+    DeckGenV3SubstituteRequest,
+)
+from models.responses import (
+    StartResponse,
+    StatusResponse,
+    DeckInfo,
+    GeneratedDeckCard,
+)
+
+__all__ = [
+    # Requests
+    "StartRequest",
+    "ImportUrlRequest",
+    "ImportTextRequest",
+    "MetaFetchRequest",
+    "CreateDeckRequest",
+    "UpdateDeckRequest",
+    "AddDeckCardRequest",
+    "PatchDeckCardRequest",
+    "BulkAddRequest",
+    "BulkAddRecommendedRequest",
+    "DeckGenerationSourceConfig",
+    "DeckGenerationRequest",
+    "DeckGenV3Request",
+    "DeckGenV3SubstituteRequest",
+    # Responses
+    "StartResponse",
+    "StatusResponse",
+    "DeckInfo",
+    "GeneratedDeckCard",
+]
diff --git a/models/requests.py b/models/requests.py
new file mode 100644
index 0000000..ace817d
--- /dev/null
+++ b/models/requests.py
@@ -0,0 +1,119 @@
+"""Pydantic request models for Commander AI Lab API."""
+from __future__ import annotations
+from typing import Optional
+from pydantic import BaseModel
+
+
+class StartRequest(BaseModel):
+    decks: list[str]
+    numGames: int = 100
+    threads: int = 4
+    seed: Optional[int] = None
+    clock: int = 120
+    deckSources: Optional[list[Optional[dict]]] = None
+    useLearnedPolicy: bool = False
+    policyStyle: str = "midrange"
+    policyGreedy: bool = False
+    aiSimplified: bool = False
+    aiThinkTimeMs: int = -1
+    maxQueueDepth: int = -1
+
+
+class ImportUrlRequest(BaseModel):
+    url: str
+
+
+class ImportTextRequest(BaseModel):
+    text: str
+    commander: Optional[str] = None
+
+
+class MetaFetchRequest(BaseModel):
+    commander: str
+
+
+class CreateDeckRequest(BaseModel):
+    name: str
+    commander_scryfall_id: Optional[str] = ""
+    commander_name: Optional[str] = ""
+    color_identity: Optional[list] = []
+    strategy_tag: Optional[str] = ""
+
+
+class UpdateDeckRequest(BaseModel):
+    name: Optional[str] = None
+    commander_scryfall_id: Optional[str] = None
+    commander_name: Optional[str] = None
+    color_identity: Optional[list] = None
+    strategy_tag: Optional[str] = None
+
+
+class AddDeckCardRequest(BaseModel):
+    scryfall_id: str
+    card_name: Optional[str] = ""
+    quantity: Optional[int] = 1
+    is_commander: Optional[int] = 0
+    role_tag: Optional[str] = ""
+
+
+class PatchDeckCardRequest(BaseModel):
+    quantity: Optional[int] = None
+    role_tag: Optional[str] = None
+
+
+class BulkAddRequest(BaseModel):
+    cards: list[dict]
+    respect_ratios: Optional[bool] = False
+
+
+class BulkAddRecommendedRequest(BaseModel):
+    source: str = "collection"
+    only_owned: Optional[bool] = True
+    respect_ratios: Optional[bool] = False
+    types: Optional[list[str]] = None
+    roles: Optional[list[str]] = None
+
+
+class DeckGenerationSourceConfig(BaseModel):
+    use_archidekt: bool = True
+    use_edhrec: bool = True
+    use_moxfield: bool = False
+    use_mtggoldfish: bool = False
+    archidekt_url: Optional[str] = ""
+    moxfield_url: Optional[str] = ""
+    mtggoldfish_url: Optional[str] = ""
+
+
+class DeckGenerationRequest(BaseModel):
+    commander_name: Optional[str] = ""
+    commander_scryfall_id: Optional[str] = ""
+    color_identity: Optional[list[str]] = None
+    sources: Optional[DeckGenerationSourceConfig] = None
+    target_land_count: int = 37
+    target_instant_count: int = 10
+    target_sorcery_count: int = 8
+    target_artifact_count: int = 10
+    target_enchantment_count: int = 8
+    target_creature_count: int = 25
+    target_planeswalker_count: int = 2
+    only_cards_in_collection: bool = False
+    allow_proxies: bool = True
+    deck_name: Optional[str] = ""
+
+
+class DeckGenV3Request(BaseModel):
+    commander_name: str = ""
+    strategy: str = ""
+    target_bracket: int = 3
+    budget_usd: Optional[float] = None
+    budget_mode: str = "total"
+    omit_cards: list[str] = []
+    use_collection: bool = True
+    run_substitution: bool = True
+    model: Optional[str] = None
+    deck_name: Optional[str] = ""
+
+
+class DeckGenV3SubstituteRequest(BaseModel):
+    card_name: str
+    substitute_name: str
diff --git a/models/responses.py b/models/responses.py
new file mode 100644
index 0000000..49197d2
--- /dev/null
+++ b/models/responses.py
@@ -0,0 +1,45 @@
+"""Pydantic response models for Commander AI Lab API."""
+from __future__ import annotations
+from typing import Optional
+from pydantic import BaseModel
+
+
+class StartResponse(BaseModel):
+    batchId: str
+    status: str = "started"
+    message: str = ""
+
+
+class StatusResponse(BaseModel):
+    batchId: str = ""
+    running: bool = False
+    completed: int = 0
+    total: int = 0
+    threads: int = 0
+    elapsedMs: int = 0
+    error: Optional[str] = None
+    simsPerSec: float = 0.0
+    run_id: str = ""
+    games_completed: int = 0
+    total_games: int = 0
+    current_decks: list = []
+
+
+class DeckInfo(BaseModel):
+    name: str
+    filename: str
+
+
+class GeneratedDeckCard(BaseModel):
+    scryfall_id: str = ""
+    name: str = ""
+    type_line: str = ""
+    mana_cost: str = ""
+    cmc: float = 0
+    card_type: str = ""
+    roles: list[str] = []
+    source: str = "collection"
+    quantity: int = 1
+    image_url: str = ""
+    owned_qty: int = 0
+    is_proxy: bool = False
diff --git a/routes/shared.py b/routes/shared.py
index bf037a9..ac784b5 100644
--- a/routes/shared.py
+++ b/routes/shared.py
@@ -183,147 +183,17 @@ def load_commander_meta() -> None:
     log.info(f"  Meta:         {len(COMMANDER_META)} built-in commanders")
 
 
-# ══════════════════════════════════════════════════════════════
-# Pydantic Models
-# ══════════════════════════════════════════════════════════════
-
-class StartRequest(BaseModel):
-    decks: list[str]
-    numGames: int = 100
-    threads: int = 4
-    seed: Optional[int] = None
-    clock: int = 120
-    deckSources: Optional[list[Optional[dict]]] = None
-    useLearnedPolicy: bool = False
-    policyStyle: str = "midrange"
-    policyGreedy: bool = False
-    aiSimplified: bool = False
-    aiThinkTimeMs: int = -1
-    maxQueueDepth: int = -1
-
-class StartResponse(BaseModel):
-    batchId: str
-    status: str = "started"
-    message: str = ""
-
-class StatusResponse(BaseModel):
-    batchId: str = ""
-    running: bool = False
-    completed: int = 0
-    total: int = 0
-    threads: int = 0
-    elapsedMs: int = 0
-    error: Optional[str] = None
-    simsPerSec: float = 0.0
-    run_id: str = ""
-    games_completed: int = 0
-    total_games: int = 0
-    current_decks: list = []
-
-class DeckInfo(BaseModel):
-    name: str
-    filename: str
-
-class ImportUrlRequest(BaseModel):
-    url: str
-
-class ImportTextRequest(BaseModel):
-    text: str
-    commander: Optional[str] = None
-
-class MetaFetchRequest(BaseModel):
-    commander: str
-
-class CreateDeckRequest(BaseModel):
-    name: str
-    commander_scryfall_id: Optional[str] = ""
-    commander_name: Optional[str] = ""
-    color_identity: Optional[list] = []
-    strategy_tag: Optional[str] = ""
-
-class UpdateDeckRequest(BaseModel):
-    name: Optional[str] = None
-    commander_scryfall_id: Optional[str] = None
-    commander_name: Optional[str] = None
-    color_identity: Optional[list] = None
-    strategy_tag: Optional[str] = None
-
-class AddDeckCardRequest(BaseModel):
-    scryfall_id: str
-    card_name: Optional[str] = ""
-    quantity: Optional[int] = 1
-    is_commander: Optional[int] = 0
-    role_tag: Optional[str] = ""
-
-class PatchDeckCardRequest(BaseModel):
-    quantity: Optional[int] = None
-    role_tag: Optional[str] = None
-
-class BulkAddRequest(BaseModel):
-    cards: list[dict]
-    respect_ratios: Optional[bool] = False
-
-class BulkAddRecommendedRequest(BaseModel):
-    source: str = "collection"
-    only_owned: Optional[bool] = True
-    respect_ratios: Optional[bool] = False
-    types: Optional[list[str]] = None
-    roles: Optional[list[str]] = None
-
-class DeckGenerationSourceConfig(BaseModel):
-    use_archidekt: bool = True
-    use_edhrec: bool = True
-    use_moxfield: bool = False
-    use_mtggoldfish: bool = False
-    archidekt_url: Optional[str] = ""
-    moxfield_url: Optional[str] = ""
-    mtggoldfish_url: Optional[str] = ""
-
-class DeckGenerationRequest(BaseModel):
-    commander_name: Optional[str] = ""
-    commander_scryfall_id: Optional[str] = ""
-    color_identity: Optional[list[str]] = None
-    sources: Optional[DeckGenerationSourceConfig] = None
-    target_land_count: int = 37
-    target_instant_count: int = 10
-    target_sorcery_count: int = 8
-    target_artifact_count: int = 10
-    target_enchantment_count: int = 8
-    target_creature_count: int = 25
-    target_planeswalker_count: int = 2
-    only_cards_in_collection: bool = False
-    allow_proxies: bool = True
-    deck_name: Optional[str] = ""
-
-class GeneratedDeckCard(BaseModel):
-    scryfall_id: str = ""
-    name: str = ""
-    type_line: str = ""
-    mana_cost: str = ""
-    cmc: float = 0
-    card_type: str = ""
-    roles: list[str] = []
-    source: str = "collection"
-    quantity: int = 1
-    image_url: str = ""
-    owned_qty: int = 0
-    is_proxy: bool = False
-
-class DeckGenV3Request(BaseModel):
-    commander_name: str = ""
-    strategy: str = ""
-    target_bracket: int = 3
-    budget_usd: Optional[float] = None
-    budget_mode: str = "total"
-    omit_cards: list[str] = []
-    use_collection: bool = True
-    run_substitution: bool = True
-    model: Optional[str] = None
-    deck_name: Optional[str] = ""
-
-class DeckGenV3SubstituteRequest(BaseModel):
-    card_name: str
-    substitute_name: str
+# Pydantic Models (imported from models/)
+from models.requests import (
+    StartRequest, ImportUrlRequest, ImportTextRequest, MetaFetchRequest,
+    CreateDeckRequest, UpdateDeckRequest, AddDeckCardRequest,
+    PatchDeckCardRequest, BulkAddRequest, BulkAddRecommendedRequest,
+    DeckGenerationSourceConfig, DeckGenerationRequest,
+    DeckGenV3Request, DeckGenV3SubstituteRequest,
+)
+from models.responses import (
+    StartResponse, StatusResponse, DeckInfo, GeneratedDeckCard,
+)
 
 
 # ══════════════════════════════════════════════════════════════