Merge 08e16816b4 into f49e917876

tools/server/server-common.cpp

@@ -1430,6 +1430,35 @@ json convert_responses_to_chatcmpl(const json & response_body) {
         chatcmpl_body["max_tokens"] = response_body["max_output_tokens"];
     }
 
+    // Convert Responses API text.format to Chat Completions response_format
+    if (response_body.contains("text") && response_body.at("text").contains("format")) {
+        const json & text_format = response_body.at("text").at("format");
+        std::string format_type = json_value(text_format, "type", std::string());
+
+        if (format_type == "json_schema") {
+            json json_schema_wrapper = {
+                {"name",   json_value(text_format, "name", std::string("default"))},
+                {"schema", json_value(text_format, "schema", json::object())},
+            };
+            if (text_format.contains("strict")) {
+                json_schema_wrapper["strict"] = text_format.at("strict");
+            }
+            if (text_format.contains("description")) {
+                json_schema_wrapper["description"] = text_format.at("description");
+            }
+            chatcmpl_body["response_format"] = {
+                {"type",        "json_schema"},
+                {"json_schema", json_schema_wrapper},
+            };
+        } else if (format_type == "json_object") {
+            chatcmpl_body["response_format"] = {
+                {"type", "json_object"},
+            };
+        }
+
+        chatcmpl_body.erase("text");
+    }
+
     return chatcmpl_body;
 }
 

tools/server/tests/unit/test_compat_oai_responses.py

@@ -71,3 +71,25 @@ def test_responses_stream_with_openai_library():
             assert r.response.output[0].id.startswith("msg_")
             assert gathered_text == r.response.output_text
             assert match_regex("(Suddenly)+", r.response.output_text)
+
+@pytest.mark.parametrize("text_format,n_predicted,re_content", [
+    ({"type": "json_schema", "name": "test_schema", "schema": {"const": "foooooo"}}, 10, "\"foooooo\""),
+    ({"type": "json_object"}, 10, "(\\{|John)+"),
+])
+def test_responses_text_format(text_format: dict, n_predicted: int, re_content: str | None):
+    global server
+    server.start()
+    res = server.make_request("POST", "/v1/responses", data={
+        "model": "gpt-4.1",
+        "max_output_tokens": n_predicted,
+        "input": [
+            {"role": "system", "content": "You are a coding assistant."},
+            {"role": "user", "content": "Write an example"},
+        ],
+        "text": {"format": text_format},
+    })
+    
+    
+    assert res.status_code == 200
+    output_text = res.body["output"][0]["content"][0]["text"]
+    assert match_regex(re_content, output_text)