diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8734ce4c5e..a57197e143 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,11 @@
 # Changelog
 
+## UNRELEASED
+
+### Improvements
+
+* [#]() Add testnet benchmark command.
+
 *Oct 24, 2024*
 
 ## v1.4.0-rc2
diff --git a/testground/benchmark/benchmark/cosmostx.py b/testground/benchmark/benchmark/cosmostx.py
index bdd47734b7..a449223588 100644
--- a/testground/benchmark/benchmark/cosmostx.py
+++ b/testground/benchmark/benchmark/cosmostx.py
@@ -78,5 +78,23 @@ class TxRaw(ProtoEntity):
 
 
 class MsgEthereumTx(ProtoEntity):
+    MSG_URL = "/ethermint.evm.v1.MsgEthereumTx"
+
+    data = Field(ProtoAny, 1)
+    deprecated_hash = Field("string", 3)
     from_ = Field("bytes", 5)
     raw = Field("bytes", 6)
+
+
+class LegacyTx(ProtoEntity):
+    MSG_URL = "/ethermint.evm.v1.LegacyTx"
+
+    nonce = Field("uint64", 1)
+    gas_price = Field("string", 2)
+    gas = Field("uint64", 3)
+    to = Field("string", 4)
+    value = Field("string", 5)
+    data = Field("bytes", 6)
+    v = Field("bytes", 7)
+    r = Field("bytes", 8)
+    s = Field("bytes", 9)
diff --git a/testground/benchmark/benchmark/testnet.py b/testground/benchmark/benchmark/testnet.py
new file mode 100644
index 0000000000..b44560d552
--- /dev/null
+++ b/testground/benchmark/benchmark/testnet.py
@@ -0,0 +1,121 @@
+import asyncio
+import json
+import sys
+import time
+from pathlib import Path
+
+import click
+import requests
+import web3
+from hexbytes import HexBytes
+
+from .transaction import EthTx, build_cosmos_tx, gen, json_rpc_send_body, send
+from .utils import gen_account, split_batch
+
+# arbitrarily picked for testnet, to not conflict with devnet benchmark accounts.
+GLOBAL_SEQ = 999
+GAS_PRICE = 5050000000000
+CHAIN_ID = 338
+TESTNET_JSONRPC = "https://evm-t3.cronos.org"
+TESTNET_RPC = "https://rpc-t3.cronos.org"
+TESTNET_EVM_DENOM = "basetcro"
+
+
+@click.group()
+def cli():
+    pass
+
+
+@cli.command()
+@click.option("--json-rpc", default=TESTNET_JSONRPC)
+@click.option("--rpc", default=TESTNET_RPC)
+@click.option("--batch-size", default=200)
+@click.argument("start", type=int)
+@click.argument("end", type=int)
+def fund(json_rpc, rpc, batch_size, start, end):
+    w3 = web3.Web3(web3.HTTPProvider(json_rpc))
+    fund_account = gen_account(GLOBAL_SEQ, 0)
+    fund_address = HexBytes(fund_account.address)
+    nonce = w3.eth.get_transaction_count(fund_account.address)
+
+    batches = split_batch(end - start + 1, batch_size)
+    for begin, end in batches:
+        begin += start
+        end += start
+        txs = []
+        for i in range(begin, end):
+            tx = {
+                "to": gen_account(GLOBAL_SEQ, i).address,
+                "value": 10 * 10**18,
+                "nonce": nonce,
+                "gas": 21000,
+                "gasPrice": GAS_PRICE,
+                "chainId": CHAIN_ID,
+            }
+            txs.append(
+                EthTx(
+                    tx, fund_account.sign_transaction(tx).rawTransaction, fund_address
+                )
+            )
+            nonce += 1
+        raw = build_cosmos_tx(*txs, msg_version="1.3", evm_denom=TESTNET_EVM_DENOM)
+        rsp = requests.post(
+            rpc, json=json_rpc_send_body(raw, method="broadcast_tx_sync")
+        ).json()
+        if rsp["result"]["code"] != 0:
+            print(rsp["result"]["log"])
+            break
+
+        # wait for nonce to change
+        while True:
+            if w3.eth.get_transaction_count(fund_account.address) >= nonce:
+                break
+            time.sleep(1)
+
+        print("sent", begin, end)
+
+
+@cli.command()
+@click.option("--json-rpc", default=TESTNET_JSONRPC)
+@click.argument("start", type=int)
+@click.argument("end", type=int)
+def check(json_rpc, start, end):
+    w3 = web3.Web3(web3.HTTPProvider(json_rpc))
+    for i in range(start, end + 1):
+        addr = gen_account(GLOBAL_SEQ, i).address
+        nonce = w3.eth.get_transaction_count(addr)
+        balance = int(w3.eth.get_balance(addr))
+        print(i, addr, nonce, balance)
+
+
+@cli.command()
+@click.argument("start", type=int)
+@click.argument("end", type=int)
+@click.option("--num-txs", default=1)
+@click.option("--nonce", default=0)
+@click.option("--msg-version", default="1.3")
+def gen_txs(start, end, num_txs, nonce, msg_version):
+    num_accounts = end - start + 1
+    txs = gen(
+        GLOBAL_SEQ,
+        num_accounts,
+        num_txs,
+        "simple-transfer",
+        1,
+        start_account=start,
+        nonce=nonce,
+        msg_version=msg_version,
+    )
+    json.dump(txs, sys.stdout)
+
+
+@cli.command()
+@click.argument("path", type=str)
+@click.option("--rpc", default=TESTNET_RPC)
+def send_txs(path, rpc):
+    txs = json.loads(Path(path).read_text())
+    asyncio.run(send(txs, rpc))
+
+
+if __name__ == "__main__":
+    cli()
diff --git a/testground/benchmark/benchmark/transaction.py b/testground/benchmark/benchmark/transaction.py
index 5ef86bedfc..311985d354 100644
--- a/testground/benchmark/benchmark/transaction.py
+++ b/testground/benchmark/benchmark/transaction.py
@@ -10,6 +10,7 @@
 import backoff
 import eth_abi
 import ujson
+from eth_account._utils.legacy_transactions import Transaction
 from hexbytes import HexBytes
 
 from . import cosmostx
@@ -21,6 +22,21 @@
 CONNECTION_POOL_SIZE = 1024
 TXS_DIR = "txs"
 
+Job = namedtuple(
+    "Job",
+    [
+        "chunk",
+        "global_seq",
+        "num_txs",
+        "tx_type",
+        "create_tx",
+        "batch",
+        "nonce",
+        "msg_version",
+    ],
+)
+EthTx = namedtuple("EthTx", ["tx", "raw", "sender"])
+
 
 def simple_transfer_tx(sender: str, nonce: int):
     return {
@@ -53,11 +69,48 @@ def erc20_transfer_tx(sender: str, nonce: int):
 }
 
 
-Job = namedtuple(
-    "Job",
-    ["chunk", "global_seq", "num_accounts", "num_txs", "tx_type", "create_tx", "batch"],
-)
-EthTx = namedtuple("EthTx", ["tx", "raw", "sender"])
+def build_evm_msg_1_3(tx: EthTx):
+    """
+    build cronos v1.3 version of MsgEthereumTx
+    """
+    txn = Transaction.from_bytes(tx.raw)
+    return cosmostx.build_any(
+        cosmostx.MsgEthereumTx.MSG_URL,
+        cosmostx.MsgEthereumTx(
+            data=cosmostx.build_any(
+                cosmostx.LegacyTx.MSG_URL,
+                cosmostx.LegacyTx(
+                    nonce=txn.nonce,
+                    gas_price=str(txn.gasPrice),
+                    gas=txn.gas,
+                    to=txn.to.hex(),
+                    value=str(txn.value),
+                    data=txn.data,
+                    v=txn.v.to_bytes(32, byteorder="big"),
+                    r=txn.r.to_bytes(32, byteorder="big"),
+                    s=txn.s.to_bytes(32, byteorder="big"),
+                ),
+            ),
+            deprecated_hash=txn.hash().hex(),
+            from_=tx.sender,
+        ),
+    )
+
+
+def build_evm_msg_1_4(tx: EthTx):
+    return cosmostx.build_any(
+        cosmostx.MsgEthereumTx.MSG_URL,
+        cosmostx.MsgEthereumTx(
+            from_=tx.sender,
+            raw=tx.raw,
+        ),
+    )
+
+
+MSG_VERSIONS = {
+    "1.3": build_evm_msg_1_3,
+    "1.4": build_evm_msg_1_4,
+}
 
 
 def _do_job(job: Job):
@@ -67,7 +120,7 @@ def _do_job(job: Job):
     for acct in accounts:
         txs = []
         for i in range(job.num_txs):
-            tx = job.create_tx(acct.address, i)
+            tx = job.create_tx(acct.address, job.nonce + i)
             raw = acct.sign_transaction(tx).rawTransaction
             txs.append(EthTx(tx, raw, HexBytes(acct.address)))
             total += 1
@@ -76,19 +129,37 @@ def _do_job(job: Job):
 
         # to keep it simple, only build batch inside the account
         txs = [
-            build_cosmos_tx(*txs[start:end])
+            build_cosmos_tx(*txs[start:end], msg_version=job.msg_version)
             for start, end in split_batch(len(txs), job.batch)
         ]
         acct_txs.append(txs)
     return acct_txs
 
 
-def gen(global_seq, num_accounts, num_txs, tx_type: str, batch: int) -> [str]:
+def gen(
+    global_seq,
+    num_accounts,
+    num_txs,
+    tx_type: str,
+    batch: int,
+    nonce: int = 0,
+    start_account: int = 0,
+    msg_version: str = "1.4",
+) -> [str]:
     chunks = split(num_accounts, os.cpu_count())
     create_tx = TX_TYPES[tx_type]
     jobs = [
-        Job(chunk, global_seq, num_accounts, num_txs, tx_type, create_tx, batch)
-        for chunk in chunks
+        Job(
+            (start + start_account, end + start_account),
+            global_seq,
+            num_txs,
+            tx_type,
+            create_tx,
+            batch,
+            nonce,
+            msg_version,
+        )
+        for start, end in chunks
     ]
 
     with multiprocessing.Pool() as pool:
@@ -119,20 +190,12 @@ def load(datadir: Path, global_seq: int) -> [str]:
         return ujson.load(f)
 
 
-def build_cosmos_tx(*txs: EthTx) -> str:
+def build_cosmos_tx(*txs: EthTx, msg_version="1.4", evm_denom=DEFAULT_DENOM) -> str:
     """
     return base64 encoded cosmos tx, support batch
     """
-    msgs = [
-        cosmostx.build_any(
-            "/ethermint.evm.v1.MsgEthereumTx",
-            cosmostx.MsgEthereumTx(
-                from_=tx.sender,
-                raw=tx.raw,
-            ),
-        )
-        for tx in txs
-    ]
+    build_msg = MSG_VERSIONS[msg_version]
+    msgs = [build_msg(tx) for tx in txs]
     fee = sum(tx.tx["gas"] * tx.tx["gasPrice"] for tx in txs)
     gas = sum(tx.tx["gas"] for tx in txs)
     body = cosmostx.TxBody(
@@ -143,7 +206,7 @@ def build_cosmos_tx(*txs: EthTx) -> str:
     )
     auth_info = cosmostx.AuthInfo(
         fee=cosmostx.Fee(
-            amount=[cosmostx.Coin(denom=DEFAULT_DENOM, amount=str(fee))],
+            amount=[cosmostx.Coin(denom=evm_denom, amount=str(fee))],
             gas_limit=gas,
         )
     )
@@ -154,20 +217,19 @@ def build_cosmos_tx(*txs: EthTx) -> str:
     ).decode()
 
 
+def json_rpc_send_body(raw, method="broadcast_tx_async"):
+    return {
+        "jsonrpc": "2.0",
+        "method": method,
+        "params": {"tx": raw},
+        "id": 1,
+    }
+
+
 @backoff.on_predicate(backoff.expo, max_time=60, max_value=5)
 @backoff.on_exception(backoff.expo, aiohttp.ClientError, max_time=60, max_value=5)
-async def async_sendtx(session, raw):
-    async with session.post(
-        LOCAL_RPC,
-        json={
-            "jsonrpc": "2.0",
-            "method": "broadcast_tx_async",
-            "params": {
-                "tx": raw,
-            },
-            "id": 1,
-        },
-    ) as rsp:
+async def async_sendtx(session, raw, rpc):
+    async with session.post(rpc, json=json_rpc_send_body(raw)) as rsp:
         data = await rsp.json()
         if "error" in data:
             print("send tx error, will retry,", data["error"])
@@ -175,10 +237,10 @@ async def async_sendtx(session, raw):
         return True
 
 
-async def send(txs):
+async def send(txs, rpc=LOCAL_RPC):
     connector = aiohttp.TCPConnector(limit=CONNECTION_POOL_SIZE)
     async with aiohttp.ClientSession(
         connector=connector, json_serialize=ujson.dumps
     ) as session:
-        tasks = [asyncio.ensure_future(async_sendtx(session, raw)) for raw in txs]
+        tasks = [asyncio.ensure_future(async_sendtx(session, raw, rpc)) for raw in txs]
         await asyncio.gather(*tasks)
diff --git a/testground/benchmark/flake.nix b/testground/benchmark/flake.nix
index f29572553a..234cf58638 100644
--- a/testground/benchmark/flake.nix
+++ b/testground/benchmark/flake.nix
@@ -33,6 +33,10 @@
               type = "app";
               program = "${pkgs.benchmark-testcase}/bin/stateless-testcase";
             };
+            testnet = {
+              type = "app";
+              program = "${pkgs.benchmark-testcase}/bin/testnet";
+            };
           };
           devShells.default = pkgs.mkShell {
             buildInputs = [ pkgs.benchmark-testcase-env ];
diff --git a/testground/benchmark/pyproject.toml b/testground/benchmark/pyproject.toml
index ed4953d96a..8ff96e6920 100644
--- a/testground/benchmark/pyproject.toml
+++ b/testground/benchmark/pyproject.toml
@@ -35,6 +35,7 @@ build-backend = "poetry.core.masonry.api"
 
 [tool.poetry.scripts]
 stateless-testcase = "benchmark.stateless:cli"
+testnet = "benchmark.testnet:cli"
 
 [tool.black]
 line-length = 88