diff --git a/testground/benchmark/benchmark/peer.py b/testground/benchmark/benchmark/peer.py
index d835c7936f..cacc84d9b6 100644
--- a/testground/benchmark/benchmark/peer.py
+++ b/testground/benchmark/benchmark/peer.py
@@ -3,19 +3,21 @@
 from pathlib import Path
 from typing import List
 
+from pydantic.json import pydantic_encoder
+
 from .cli import ChainCommand
 from .context import Context
 from .network import get_data_ip
 from .topology import connect_all
-from .types import GenesisAccount, PeerPacket
+from .types import Balance, GenesisAccount, PeerPacket
 from .utils import eth_to_bech32, gen_account, patch_json, patch_toml
 
+DEFAULT_DENOM = "basecro"
 VAL_ACCOUNT = "validator"
-VAL_INITIAL_AMOUNT = "100000000000000000000basecro"
-VAL_STAKED_AMOUNT = "10000000000000000000basecro"
-ACC_INITIAL_AMOUNT = "10000000000000000000000000basecro"
+VAL_INITIAL_AMOUNT = Balance(amount="100000000000000000000", denom=DEFAULT_DENOM)
+VAL_STAKED_AMOUNT = Balance(amount="10000000000000000000", denom=DEFAULT_DENOM)
+ACC_INITIAL_AMOUNT = Balance(amount="10000000000000000000000000", denom=DEFAULT_DENOM)
 MEMPOOL_SIZE = 10000
-DEFAULT_DENOM = "basecro"
 VALIDATOR_GROUP = "validators"
 FULLNODE_GROUP = "fullnodes"
 CONTAINER_CRONOSD_PATH = "/bin/cronosd"
@@ -85,12 +87,13 @@ def init_node(
     )
     accounts = [
         GenesisAccount(
-            address=eth_to_bech32(val_acct.address), balance=VAL_INITIAL_AMOUNT
+            address=eth_to_bech32(val_acct.address),
+            coins=[VAL_INITIAL_AMOUNT],
         ),
     ] + [
         GenesisAccount(
             address=eth_to_bech32(gen_account(global_seq, i + 1).address),
-            balance=ACC_INITIAL_AMOUNT,
+            coins=[ACC_INITIAL_AMOUNT],
         )
         for i in range(num_accounts)
     ]
@@ -115,7 +118,7 @@ def gen_genesis(
 ):
     for peer in peers:
         with tempfile.NamedTemporaryFile() as fp:
-            fp.write(json.dumps(peer.bulk_genesis_accounts()).encode())
+            fp.write(json.dumps(peer.accounts, default=pydantic_encoder).encode())
             fp.flush()
             cli(
                 "genesis",
@@ -171,7 +174,7 @@ def gentx(cli, **kwargs):
         "genesis",
         "add-genesis-account",
         VAL_ACCOUNT,
-        VAL_INITIAL_AMOUNT,
+        str(VAL_INITIAL_AMOUNT),
         **kwargs,
     )
     with tempfile.TemporaryDirectory() as tmp:
diff --git a/testground/benchmark/benchmark/types.py b/testground/benchmark/benchmark/types.py
index 451ec5c0a9..14bc02e600 100644
--- a/testground/benchmark/benchmark/types.py
+++ b/testground/benchmark/benchmark/types.py
@@ -2,14 +2,20 @@
 
 from pydantic import BaseModel
 
-from .utils import bech32_to_eth, parse_coins
+from .utils import bech32_to_eth
 
-DEFAULT_DENOM = "basecro"
+
+class Balance(BaseModel):
+    amount: str
+    denom: str
+
+    def __str__(self):
+        return f"{self.amount}{self.denom}"
 
 
 class GenesisAccount(BaseModel):
     address: str
-    balance: str
+    coins: List[Balance]
 
     @property
     def eth_address(self) -> str:
@@ -22,15 +28,3 @@ class PeerPacket(BaseModel):
     peer_id: str
     accounts: List[GenesisAccount]
     gentx: Optional[dict] = None
-
-    def bulk_genesis_accounts(self):
-        """
-        convert accounts to the format required in `bulk-add-genesis-account` command
-        """
-        return [
-            {
-                "address": acct.address,
-                "coins": [parse_coins(acct.balance)],
-            }
-            for acct in self.accounts
-        ]
diff --git a/testground/benchmark/benchmark/utils.py b/testground/benchmark/benchmark/utils.py
index 241fd91c51..ace58baa7f 100644
--- a/testground/benchmark/benchmark/utils.py
+++ b/testground/benchmark/benchmark/utils.py
@@ -140,21 +140,3 @@ def gen_account(global_seq: int, index: int) -> Account:
     index 0 is reserved for validator account.
     """
     return Account.from_key(((global_seq + 1) << 32 | index).to_bytes(32))
-
-
-def parse_coins(s: str) -> dict:
-    """
-    split denom from coins string.
-    for example: `"1000.0stake,1000basetcro"` to
-    `[{'amount': '1000.0', 'denom': 'stake'}, {'amount': '1000', 'denom': 'basetcro'}]`
-    """
-    coins = []
-    for coin in s.split(","):
-        amount = "".join(takewhile(is_float, coin))
-        denom = "".join(dropwhile(is_float, coin))
-        coins.append({"amount": amount, "denom": denom.strip()})
-    return coins
-
-
-def is_float(s):
-    return str.isdigit(s) or s == "."