diff --git a/open_mythos/__init__.py b/open_mythos/__init__.py
index 132f95d..52ad2fe 100644
--- a/open_mythos/__init__.py
+++ b/open_mythos/__init__.py
@@ -15,6 +15,15 @@ from open_mythos.main import (
     apply_rope,
     loop_index_embedding,
 )
+from open_mythos.variants import (
+    mythos_1b,
+    mythos_3b,
+    mythos_10b,
+    mythos_50b,
+    mythos_100b,
+    mythos_500b,
+    mythos_1t,
+)
 
 __all__ = [
     "MythosConfig",
@@ -32,4 +41,11 @@ __all__ = [
     "precompute_rope_freqs",
     "apply_rope",
     "loop_index_embedding",
+    "mythos_1b",
+    "mythos_3b",
+    "mythos_10b",
+    "mythos_50b",
+    "mythos_100b",
+    "mythos_500b",
+    "mythos_1t",
 ]
diff --git a/open_mythos/main.py b/open_mythos/main.py
index 71cbfb9..4170be6 100644
--- a/open_mythos/main.py
+++ b/open_mythos/main.py
@@ -78,6 +78,8 @@ class MythosConfig:
     rope_theta: float = 500000.0
     # LoRA depth adaptation
     lora_rank: int = 16
+    # Maximum tokens to generate per forward pass
+    max_output_tokens: int = 4096
 
 
 # ---------------------------------------------------------------------------
diff --git a/open_mythos/variants.py b/open_mythos/variants.py
new file mode 100644
index 0000000..2ffb9ec
--- /dev/null
+++ b/open_mythos/variants.py
@@ -0,0 +1,91 @@
+from open_mythos.main import MythosConfig
+
+# fmt: off
+
+def mythos_1b() -> MythosConfig:
+    """1B parameter config. Small research/fine-tuning model. dim=2048, 16 experts, 16 loop iters, 4k context."""
+    return MythosConfig(
+        vocab_size=32000, dim=2048, n_heads=16, n_kv_heads=4,
+        max_seq_len=4096, max_loop_iters=16, prelude_layers=2, coda_layers=2,
+        attn_type="mla", kv_lora_rank=256, q_lora_rank=512,
+        qk_rope_head_dim=32, qk_nope_head_dim=64, v_head_dim=64,
+        n_experts=16, n_shared_experts=2, n_experts_per_tok=2, expert_dim=256,
+        act_threshold=0.99, rope_theta=500000.0, lora_rank=8,
+    )
+
+
+def mythos_3b() -> MythosConfig:
+    """3B parameter config. Compact inference model. dim=3072, 32 experts, 16 loop iters, 4k context."""
+    return MythosConfig(
+        vocab_size=32000, dim=3072, n_heads=24, n_kv_heads=6,
+        max_seq_len=4096, max_loop_iters=16, prelude_layers=2, coda_layers=2,
+        attn_type="mla", kv_lora_rank=384, q_lora_rank=768,
+        qk_rope_head_dim=32, qk_nope_head_dim=96, v_head_dim=96,
+        n_experts=32, n_shared_experts=2, n_experts_per_tok=2, expert_dim=384,
+        act_threshold=0.99, rope_theta=500000.0, lora_rank=8,
+    )
+
+
+def mythos_10b() -> MythosConfig:
+    """10B parameter config. Mid-scale general model. dim=4096, 64 experts, 24 loop iters, 8k context."""
+    return MythosConfig(
+        vocab_size=32000, dim=4096, n_heads=32, n_kv_heads=8,
+        max_seq_len=8192, max_loop_iters=24, prelude_layers=2, coda_layers=2,
+        attn_type="mla", kv_lora_rank=512, q_lora_rank=1024,
+        qk_rope_head_dim=64, qk_nope_head_dim=128, v_head_dim=128,
+        n_experts=64, n_shared_experts=2, n_experts_per_tok=4, expert_dim=512,
+        act_threshold=0.99, rope_theta=500000.0, lora_rank=16,
+    )
+
+
+def mythos_50b() -> MythosConfig:
+    """50B parameter config. Large reasoning model. dim=6144, 128 experts, 32 loop iters, 8k context."""
+    return MythosConfig(
+        vocab_size=32000, dim=6144, n_heads=48, n_kv_heads=8,
+        max_seq_len=8192, max_loop_iters=32, prelude_layers=3, coda_layers=3,
+        attn_type="mla", kv_lora_rank=512, q_lora_rank=1536,
+        qk_rope_head_dim=64, qk_nope_head_dim=128, v_head_dim=128,
+        n_experts=128, n_shared_experts=4, n_experts_per_tok=4, expert_dim=768,
+        act_threshold=0.99, rope_theta=500000.0, lora_rank=32,
+    )
+
+
+def mythos_100b() -> MythosConfig:
+    """100B parameter config. Frontier-class model. dim=8192, 160 experts, 32 loop iters, 1M context, 128k output."""
+    return MythosConfig(
+        vocab_size=32000, dim=8192, n_heads=64, n_kv_heads=8,
+        max_seq_len=1000000, max_loop_iters=32, prelude_layers=4, coda_layers=4,
+        attn_type="mla", kv_lora_rank=512, q_lora_rank=2048,
+        qk_rope_head_dim=64, qk_nope_head_dim=128, v_head_dim=128,
+        n_experts=160, n_shared_experts=4, n_experts_per_tok=8, expert_dim=1024,
+        act_threshold=0.99, rope_theta=1000000.0, lora_rank=64,
+        max_output_tokens=131072,
+    )
+
+
+def mythos_500b() -> MythosConfig:
+    """500B parameter config. Ultra-scale MoE model. dim=12288, 256 experts, 48 loop iters, 1M context, 128k output."""
+    return MythosConfig(
+        vocab_size=100000, dim=12288, n_heads=96, n_kv_heads=16,
+        max_seq_len=1000000, max_loop_iters=48, prelude_layers=4, coda_layers=4,
+        attn_type="mla", kv_lora_rank=1024, q_lora_rank=3072,
+        qk_rope_head_dim=64, qk_nope_head_dim=128, v_head_dim=128,
+        n_experts=256, n_shared_experts=8, n_experts_per_tok=8, expert_dim=1536,
+        act_threshold=0.99, rope_theta=1000000.0, lora_rank=128,
+        max_output_tokens=131072,
+    )
+
+
+def mythos_1t() -> MythosConfig:
+    """1T parameter config. Maximum scale. dim=16384, 512 experts, 64 loop iters, 1M context, 128k output."""
+    return MythosConfig(
+        vocab_size=100000, dim=16384, n_heads=128, n_kv_heads=16,
+        max_seq_len=1000000, max_loop_iters=64, prelude_layers=6, coda_layers=6,
+        attn_type="mla", kv_lora_rank=1024, q_lora_rank=4096,
+        qk_rope_head_dim=64, qk_nope_head_dim=128, v_head_dim=128,
+        n_experts=512, n_shared_experts=8, n_experts_per_tok=8, expert_dim=2048,
+        act_threshold=0.99, rope_theta=2000000.0, lora_rank=256,
+        max_output_tokens=131072,
+    )
+
+# fmt: on