diff --git a/barretenberg/acir_tests/bbjs-test/.yarnrc.yml b/barretenberg/acir_tests/bbjs-test/.yarnrc.yml
new file mode 100644
index 000000000000..3186f3f0795a
--- /dev/null
+++ b/barretenberg/acir_tests/bbjs-test/.yarnrc.yml
@@ -0,0 +1 @@
+nodeLinker: node-modules
diff --git a/barretenberg/acir_tests/bbjs-test/package.json b/barretenberg/acir_tests/bbjs-test/package.json
new file mode 100644
index 000000000000..217bd2d98a86
--- /dev/null
+++ b/barretenberg/acir_tests/bbjs-test/package.json
@@ -0,0 +1,15 @@
+{
+  "name": "bbjs-test",
+  "packageManager": "yarn@4.5.2",
+  "main": "dest/index.js",
+  "scripts": {
+    "build": "tsc"
+  },
+  "dependencies": {
+    "@aztec/bb.js": "portal:../../ts",
+    "commander": "^12.1.0"
+  },
+  "devDependencies": {
+    "typescript": "^5.6.3"
+  }
+}
diff --git a/barretenberg/acir_tests/bbjs-test/src/index.ts b/barretenberg/acir_tests/bbjs-test/src/index.ts
new file mode 100644
index 000000000000..5c17d73ddca8
--- /dev/null
+++ b/barretenberg/acir_tests/bbjs-test/src/index.ts
@@ -0,0 +1,85 @@
+import createDebug from "debug";
+import fs from "fs/promises";
+import path from "path";
+import { Command } from "commander";
+import assert from "assert";
+
+createDebug.enable("*");
+const debug = createDebug("bbjs-test");
+
+const proofPath = (dir: string) => path.join(dir, "proof");
+const publicInputsPath = (dir: string) => path.join(dir, "public-inputs");
+const vkeyPath = (dir: string) => path.join(dir, "vk");
+
+async function generateProof({
+  bytecodePath,
+  witnessPath,
+  outputDirectory,
+  oracleHash,
+  multiThreaded,
+}: {
+  bytecodePath: string;
+  witnessPath: string;
+  outputDirectory: string;
+  oracleHash?: string;
+  multiThreaded?: boolean;
+}) {
+  const { UltraHonkBackend } = await import("@aztec/bb.js");
+
+  debug(`Generating proof for ${bytecodePath}...`);
+  const circuitArtifact = await fs.readFile(bytecodePath);
+  const bytecode = JSON.parse(circuitArtifact.toString()).bytecode;
+  const backend = new UltraHonkBackend(bytecode, { threads: multiThreaded ? 8 : 1 });
+
+  const witness = await fs.readFile(witnessPath);
+  const proof = await backend.generateProof(new Uint8Array(witness), { keccak: (oracleHash === "keccak") });
+
+  await fs.writeFile(proofPath(outputDirectory), Buffer.from(proof.proof));
+  debug("Proof written to " + proofPath(outputDirectory));
+
+  await fs.writeFile(publicInputsPath(outputDirectory), JSON.stringify(proof.publicInputs));
+  debug("Public inputs written to " + publicInputsPath(outputDirectory));
+
+  const verificationKey = await backend.getVerificationKey({ keccak: (oracleHash === "keccak") });
+  await fs.writeFile(vkeyPath(outputDirectory), Buffer.from(verificationKey));
+  debug("Verification key written to " + vkeyPath(outputDirectory));
+
+  await backend.destroy();
+}
+
+async function verifyProof({ directory }: { directory: string }) {
+  const { BarretenbergVerifier } = await import("@aztec/bb.js");
+
+  const verifier = new BarretenbergVerifier();
+
+  const proof = await fs.readFile(proofPath(directory));
+  const publicInputs = JSON.parse(await fs.readFile(publicInputsPath(directory), "utf8"));
+  const vkey = await fs.readFile(vkeyPath(directory));
+
+  const verified = await verifier.verifyUltraHonkProof(
+    { proof: new Uint8Array(proof), publicInputs },
+    new Uint8Array(vkey)
+  );
+
+  await verifier.destroy();
+  debug(`Proof verified: ${verified}`);
+}
+
+// Prepare a minimal command line interface
+const program = new Command();
+
+program
+  .command("prove")
+  .option("-b, --bytecode-path <path>", "bytecode path")
+  .option("-w, --witness-path <path>", "witness path")
+  .option("-o, --output-directory <path>", "output directory")
+  .option("-h, --oracle-hash <hash>", "oracle hash")
+  .option("-multi-threaded", "multi-threaded")
+  .action((args) => generateProof(args));
+
+program
+  .command("verify")
+  .option("-d, --directory <path>", "directory")
+  .action((args) => verifyProof(args));
+
+program.parse(process.argv);
diff --git a/barretenberg/acir_tests/bbjs-test/tsconfig.json b/barretenberg/acir_tests/bbjs-test/tsconfig.json
new file mode 100644
index 000000000000..13c452bfd97d
--- /dev/null
+++ b/barretenberg/acir_tests/bbjs-test/tsconfig.json
@@ -0,0 +1,19 @@
+{
+  "compilerOptions": {
+    "target": "es2020",
+    "lib": ["dom", "esnext", "es2017.object"],
+    "module": "NodeNext",
+    "strict": true,
+    "declaration": true,
+    "allowSyntheticDefaultImports": true,
+    "esModuleInterop": true,
+    "downlevelIteration": true,
+    "inlineSourceMap": true,
+    "declarationMap": true,
+    "importHelpers": true,
+    "resolveJsonModule": true,
+    "outDir": "dest",
+    "rootDir": "src"
+  },
+  "include": ["src"]
+}
diff --git a/barretenberg/acir_tests/bootstrap.sh b/barretenberg/acir_tests/bootstrap.sh
index e3787ba3487e..61b9d1c2bada 100755
--- a/barretenberg/acir_tests/bootstrap.sh
+++ b/barretenberg/acir_tests/bootstrap.sh
@@ -113,6 +113,8 @@ function build {
   # find {headless-test,browser-test-app} -exec touch -t 197001010000 {} + 2>/dev/null || true
 
   denoise "cd browser-test-app && yarn build"
+
+  denoise "cd bbjs-test && yarn build"
 }
 
 function test {
@@ -187,6 +189,22 @@ function test_cmds_internal {
   echo SYS=ultra_honk FLOW=prove_then_verify RECURSIVE=true $run_test double_verify_honk_proof
   echo SYS=ultra_honk FLOW=prove_then_verify HASH=keccak $run_test assert_statement
   echo SYS=ultra_honk FLOW=prove_then_verify ROLLUP=true $run_test verify_rollup_honk_proof
+
+  # prove and verify using bb.js classes
+  echo SYS=ultra_honk FLOW=bbjs_prove_verify $run_test 1_mul
+  echo SYS=ultra_honk FLOW=bbjs_prove_verify THREAD_MODEL=mt $run_test assert_statement
+
+  # prove with bb.js and verify with solidity verifier
+  echo SYS=ultra_honk FLOW=bbjs_prove_sol_verify $run_test 1_mul
+  echo SYS=ultra_honk FLOW=bbjs_prove_sol_verify $run_test assert_statement
+
+  # prove with bb cli and verify with bb.js classes
+  echo SYS=ultra_honk FLOW=bb_prove_bbjs_verify $run_test 1_mul
+  echo SYS=ultra_honk FLOW=bb_prove_bbjs_verify $run_test assert_statement
+
+  # prove with bb.js and verify with bb cli
+  echo SYS=ultra_honk FLOW=bbjs_prove_bb_verify $run_test 1_mul
+  echo SYS=ultra_honk FLOW=bbjs_prove_bb_verify $run_test assert_statement
 }
 
 function ultra_honk_wasm_memory {
diff --git a/barretenberg/acir_tests/flows/bb_prove_bbjs_verify.sh b/barretenberg/acir_tests/flows/bb_prove_bbjs_verify.sh
new file mode 100755
index 000000000000..52763418d05c
--- /dev/null
+++ b/barretenberg/acir_tests/flows/bb_prove_bbjs_verify.sh
@@ -0,0 +1,49 @@
+#!/bin/bash
+
+# prove with bb.js and verify using bb classes
+set -eu
+
+if [ "${SYS:-}" != "ultra_honk" ]; then
+  echo "Error: This flow only supports ultra_honk"
+  exit 1
+fi
+
+artifact_dir=$(realpath ./target)
+output_dir=$artifact_dir/bbjs-bb-tmp
+mkdir -p $output_dir
+
+# Cleanup on exit
+trap "rm -rf $output_dir" EXIT
+
+# Generate the proof and VK using BB CLI (save as both bytes and fields)
+$BIN prove \
+  --scheme ultra_honk \
+  -b $artifact_dir/program.json \
+  -w $artifact_dir/witness.gz \
+  --output_format bytes_and_fields \
+  -o $output_dir
+
+# Generate the VK using BB CLI
+$BIN write_vk \
+  --scheme ultra_honk \
+  -b $artifact_dir/program.json \
+  -o $output_dir
+
+# bb.js expects proof and public inputs to be separate files, so we need to split them
+# this will not be needed after #11024
+
+# Save public inputs as separate file (first NUM_PUBLIC_INPUTS fields of proof_fields.json)
+PROOF_FIELDS_LENGTH=$(jq 'length' $output_dir/proof_fields.json)
+UH_PROOF_FIELDS_LENGTH=440
+NUM_PUBLIC_INPUTS=$((PROOF_FIELDS_LENGTH - UH_PROOF_FIELDS_LENGTH))
+jq ".[:$NUM_PUBLIC_INPUTS]" $output_dir/proof_fields.json > $output_dir/public-inputs
+
+# Remove NUM_PUBLIC_INPUTS*32 bytes from the proof
+proof_hex=$(cat $output_dir/proof | xxd -p)
+proof_start=${proof_hex:0:8}
+proof_end=${proof_hex:$((8 + NUM_PUBLIC_INPUTS * 64))}
+echo -n $proof_start$proof_end | xxd -r -p > $output_dir/proof
+
+# Verify the proof with bb.js classes
+node ../../bbjs-test verify \
+  -d $output_dir
diff --git a/barretenberg/acir_tests/flows/bbjs_prove_bb_verify.sh b/barretenberg/acir_tests/flows/bbjs_prove_bb_verify.sh
new file mode 100755
index 000000000000..0fbce76c813c
--- /dev/null
+++ b/barretenberg/acir_tests/flows/bbjs_prove_bb_verify.sh
@@ -0,0 +1,47 @@
+#!/bin/bash
+
+# prove with bb.js and verify using bb cli
+set -eu
+
+if [ "${SYS:-}" != "ultra_honk" ]; then
+  echo "Error: This flow only supports ultra_honk"
+  exit 1
+fi
+
+artifact_dir=$(realpath ./target)
+output_dir=$artifact_dir/bb-bbjs-tmp
+mkdir -p $output_dir
+
+# Cleanup on exit
+trap "rm -rf $output_dir" EXIT
+
+# Writes the proof, public inputs ./target; this also writes the VK
+node ../../bbjs-test prove \
+  -b $artifact_dir/program.json \
+  -w $artifact_dir/witness.gz \
+  -o $output_dir
+
+# Join the proof and public inputs to a single file
+# this will not be needed after #11024
+
+proof_bytes=$(cat $output_dir/proof | xxd -p)
+public_inputs=$(cat $output_dir/public-inputs | jq -r '.[]')
+proof_start=${proof_bytes:0:8}
+proof_end=${proof_bytes:8}
+
+public_inputs_bytes=""
+for input in $public_inputs; do
+  public_inputs_bytes+=$input
+done
+
+# Combine proof start, public inputs, and rest of proof
+echo -n $proof_start$public_inputs_bytes$proof_end | xxd -r -p > $output_dir/proof
+
+# Print the length of the proof file in bytes
+ls -l $output_dir/proof | awk '{print $5}'
+
+# Verify the proof with bb cli
+$BIN verify \
+  --scheme ultra_honk \
+  -k $output_dir/vk \
+  -p $output_dir/proof
diff --git a/barretenberg/acir_tests/flows/bbjs_prove_sol_verify.sh b/barretenberg/acir_tests/flows/bbjs_prove_sol_verify.sh
new file mode 100755
index 000000000000..7fbf519a5a91
--- /dev/null
+++ b/barretenberg/acir_tests/flows/bbjs_prove_sol_verify.sh
@@ -0,0 +1,39 @@
+#!/bin/bash
+
+# prove using bb.js and verify using solidity verifier
+set -eu
+
+if [ "${SYS:-}" != "ultra_honk" ]; then
+  echo "Error: This flow only supports ultra_honk"
+  exit 1
+fi
+
+artifact_dir=$(realpath ./target)
+output_dir=$artifact_dir/bbjs-sol-tmp
+mkdir -p $output_dir
+
+# Cleanup on exit
+trap "rm -rf $output_dir" EXIT
+
+# Generate the proof and VK
+node ../../bbjs-test prove \
+  -b $artifact_dir/program.json \
+  -w $artifact_dir/witness.gz \
+  -o $output_dir \
+  --oracle-hash keccak
+
+# Write the solidity verifier to ./target
+export VK=$output_dir/vk
+export VERIFIER_PATH="$output_dir/Verifier.sol"
+
+# Use the BB CLI to write the solidity verifier - this can also be done with bb.js
+$BIN write_solidity_verifier --scheme ultra_honk -k $VK -o $VERIFIER_PATH
+
+# Verify the proof using the solidity verifier
+export PROOF=$output_dir/proof
+export PUBLIC_INPUTS=$output_dir/public-inputs
+export TEST_PATH=$(realpath "../../sol-test/HonkTest.sol")
+export TESTING_HONK="true"
+export TEST_NAME=$(basename $(realpath ./))
+
+node ../../sol-test/src/index.js
diff --git a/barretenberg/acir_tests/flows/bbjs_prove_verify.sh b/barretenberg/acir_tests/flows/bbjs_prove_verify.sh
new file mode 100755
index 000000000000..a7ae25ec8a53
--- /dev/null
+++ b/barretenberg/acir_tests/flows/bbjs_prove_verify.sh
@@ -0,0 +1,27 @@
+#!/bin/bash
+
+# prove and verify using bb.js classes
+set -eu
+
+if [ "${SYS:-}" != "ultra_honk" ]; then
+  echo "Error: This flow only supports ultra_honk"
+  exit 1
+fi
+
+artifact_dir=$(realpath ./target)
+output_dir=$artifact_dir/bbjs-tmp
+mkdir -p $output_dir
+
+# Cleanup on exit
+trap "rm -rf $output_dir" EXIT
+
+# Writes the proof, public inputs ./target; this also writes the VK
+node ../../bbjs-test prove \
+  -b $artifact_dir/program.json \
+  -w $artifact_dir/witness.gz \
+  -o $output_dir \
+  ${THREAD_MODEL:-st} = "mt" && echo "--multi-threaded"
+
+# Verify the proof by reading the files in ./target
+node ../../bbjs-test verify \
+  -d $output_dir
diff --git a/barretenberg/acir_tests/package.json b/barretenberg/acir_tests/package.json
index 17bde8f091e2..6ec7770e0284 100644
--- a/barretenberg/acir_tests/package.json
+++ b/barretenberg/acir_tests/package.json
@@ -5,6 +5,7 @@
   "workspaces": [
     "browser-test-app",
     "headless-test",
-    "sol-test"
+    "sol-test",
+    "bbjs-test"
   ]
 }
diff --git a/barretenberg/acir_tests/sol-test/src/index.js b/barretenberg/acir_tests/sol-test/src/index.js
index 95718939ca3f..7ba7dbb44cff 100644
--- a/barretenberg/acir_tests/sol-test/src/index.js
+++ b/barretenberg/acir_tests/sol-test/src/index.js
@@ -217,24 +217,43 @@ const killAnvil = () => {
 };
 
 try {
-  const proofAsFieldsPath = getEnvVar("PROOF_AS_FIELDS");
-  const proofAsFields = readFileSync(proofAsFieldsPath);
-  const [numPublicInputs, publicInputs] = readPublicInputs(
-    JSON.parse(proofAsFields.toString())
-  );
-
   const proofPath = getEnvVar("PROOF");
-  const proof = readFileSync(proofPath);
+  let publicInputsPath;
+  try {
+    publicInputsPath = getEnvVar("PUBLIC_INPUTS");
+  } catch (e) {
+    // noop
+  }
+
+  let proofStr = '';
+  let publicInputs = [];
+
+  // If "path to public inputs" is provided, it means that the proof and public inputs are saved as separate files
+  // A bit hacky, but this can go away once BB CLI saves them as separate files - #11024
+  if (publicInputsPath) {
+    const proof = readFileSync(proofPath);
+    proofStr = proof.toString("hex");
+    publicInputs = JSON.parse(readFileSync(publicInputsPath).toString()); // assumes JSON array of PI hex strings
+  } else {
+    // Proof and public inputs are saved in a single file; we need to extract the PI from the proof
+    const proof = readFileSync(proofPath);
+    proofStr = proof.toString("hex");
+
+    const proofAsFieldsPath = getEnvVar("PROOF_AS_FIELDS");
+    const proofAsFields = readFileSync(proofAsFieldsPath);
+
+    let numPublicInputs;
+    [numPublicInputs, publicInputs] = readPublicInputs(
+      JSON.parse(proofAsFields.toString())
+    );
 
-  // Cut the number of public inputs out of the proof string
-  let proofStr = proof.toString("hex");
+    proofStr = proofStr.substring(32 * 2 * numPublicInputs); // Remove the publicInput bytes from the proof
+  }
+
+  // Honk proof have field length as the first 4 bytes
+  // This should go away in the future
   if (testingHonk) {
-    // Cut off the serialised buffer size at start
     proofStr = proofStr.substring(8);
-    // Get the part after the public inputs
-    proofStr = proofStr.substring(64 * numPublicInputs);
-  } else {
-    proofStr = proofStr.substring(64 * numPublicInputs);
   }
 
   proofStr = "0x" + proofStr;
diff --git a/barretenberg/acir_tests/yarn.lock b/barretenberg/acir_tests/yarn.lock
index 437bc7f79910..785481d72c03 100644
--- a/barretenberg/acir_tests/yarn.lock
+++ b/barretenberg/acir_tests/yarn.lock
@@ -18,6 +18,21 @@ __metadata:
   languageName: unknown
   linkType: soft
 
+"@aztec/bb.js@portal:../../ts::locator=bbjs-test%40workspace%3Abbjs-test":
+  version: 0.0.0-use.local
+  resolution: "@aztec/bb.js@portal:../../ts::locator=bbjs-test%40workspace%3Abbjs-test"
+  dependencies:
+    comlink: "npm:^4.4.1"
+    commander: "npm:^12.1.0"
+    debug: "npm:^4.3.4"
+    fflate: "npm:^0.8.0"
+    pako: "npm:^2.1.0"
+    tslib: "npm:^2.4.0"
+  bin:
+    bb.js: dest/node/main.js
+  languageName: node
+  linkType: soft
+
 "@aztec/bb.js@portal:../../ts::locator=browser-test-app%40workspace%3Abrowser-test-app":
   version: 0.0.0-use.local
   resolution: "@aztec/bb.js@portal:../../ts::locator=browser-test-app%40workspace%3Abrowser-test-app"
@@ -1058,6 +1073,16 @@ __metadata:
   languageName: node
   linkType: hard
 
+"bbjs-test@workspace:bbjs-test":
+  version: 0.0.0-use.local
+  resolution: "bbjs-test@workspace:bbjs-test"
+  dependencies:
+    "@aztec/bb.js": "portal:../../ts"
+    commander: "npm:^12.1.0"
+    typescript: "npm:^5.6.3"
+  languageName: unknown
+  linkType: soft
+
 "binary-extensions@npm:^2.0.0":
   version: 2.3.0
   resolution: "binary-extensions@npm:2.3.0"
@@ -4941,7 +4966,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"typescript@npm:^5.4.2":
+"typescript@npm:^5.4.2, typescript@npm:^5.6.3":
   version: 5.8.2
   resolution: "typescript@npm:5.8.2"
   bin:
@@ -4951,7 +4976,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"typescript@patch:typescript@npm%3A^5.4.2#optional!builtin<compat/typescript>":
+"typescript@patch:typescript@npm%3A^5.4.2#optional!builtin<compat/typescript>, typescript@patch:typescript@npm%3A^5.6.3#optional!builtin<compat/typescript>":
   version: 5.8.2
   resolution: "typescript@patch:typescript@npm%3A5.8.2#optional!builtin<compat/typescript>::version=5.8.2&hash=5786d5"
   bin: