Introduce the first version of the /chat route that mimics the OpenAI API

Cargo.lock

@@ -409,7 +409,7 @@ dependencies = [
  "rayon",
  "roaring",
  "tempfile",
- "thiserror 2.0.9",
+ "thiserror 2.0.12",
  "tracing",
 ]
 
@@ -423,6 +423,43 @@ dependencies = [
  "serde_json",
 ]
 
+[[package]]
+name = "async-openai"
+version = "0.28.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "14d76e2f5af19477d6254415acc95ba97c6cc6f3b1e3cb4676b7f0fab8194298"
+dependencies = [
+ "async-openai-macros",
+ "backoff",
+ "base64 0.22.1",
+ "bytes",
+ "derive_builder 0.20.2",
+ "eventsource-stream",
+ "futures",
+ "rand",
+ "reqwest",
+ "reqwest-eventsource",
+ "secrecy",
+ "serde",
+ "serde_json",
+ "thiserror 2.0.12",
+ "tokio",
+ "tokio-stream",
+ "tokio-util",
+ "tracing",
+]
+
+[[package]]
+name = "async-openai-macros"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0289cba6d5143bfe8251d57b4a8cac036adf158525a76533a7082ba65ec76398"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.87",
+]
+
 [[package]]
 name = "async-trait"
 version = "0.1.85"
@@ -446,6 +483,20 @@ version = "1.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f1fdabc7756949593fe60f30ec81974b613357de856987752631dea1e3394c80"
 
+[[package]]
+name = "backoff"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b62ddb9cb1ec0a098ad4bbf9344d0713fa193ae1a80af55febcff2627b6a00c1"
+dependencies = [
+ "futures-core",
+ "getrandom 0.2.15",
+ "instant",
+ "pin-project-lite",
+ "rand",
+ "tokio",
+]
+
 [[package]]
 name = "backtrace"
 version = "0.3.68"
@@ -904,7 +955,7 @@ dependencies = [
  "semver",
  "serde",
  "serde_json",
- "thiserror 2.0.9",
+ "thiserror 2.0.12",
 ]
 
 [[package]]
@@ -1178,6 +1229,26 @@ dependencies = [
  "version_check",
 ]
 
+[[package]]
+name = "core-foundation"
+version = "0.9.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "91e195e091a93c46f7102ec7818a2aa394e1e1771c3ab4825963fa03e45afb8f"
+dependencies = [
+ "core-foundation-sys",
+ "libc",
+]
+
+[[package]]
+name = "core-foundation"
+version = "0.10.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b55271e5c8c478ad3f38ad24ef34923091e0548492a266d19b3c0b4d82574c63"
+dependencies = [
+ "core-foundation-sys",
+ "libc",
+]
+
 [[package]]
 name = "core-foundation-sys"
 version = "0.8.7"
@@ -1668,7 +1739,7 @@ dependencies = [
  "serde_json",
  "tar",
  "tempfile",
- "thiserror 2.0.9",
+ "thiserror 2.0.12",
  "time",
  "tracing",
  "uuid",
@@ -1835,6 +1906,17 @@ version = "0.1.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d817e038c30374a4bcb22f94d0a8a0e216958d4c3dcde369b1439fec4bdda6e6"
 
+[[package]]
+name = "eventsource-stream"
+version = "0.2.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "74fef4569247a5f429d9156b9d0a2599914385dd189c539334c625d8099d90ab"
+dependencies = [
+ "futures-core",
+ "nom",
+ "pin-project-lite",
+]
+
 [[package]]
 name = "fancy-regex"
 version = "0.13.0"
@@ -1857,7 +1939,7 @@ name = "file-store"
 version = "1.15.0"
 dependencies = [
  "tempfile",
- "thiserror 2.0.9",
+ "thiserror 2.0.12",
  "tracing",
  "uuid",
 ]
@@ -2015,6 +2097,12 @@ version = "0.3.31"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f90f7dce0722e95104fcb095585910c0977252f286e354b5e3bd38902cd99988"
 
+[[package]]
+name = "futures-timer"
+version = "3.0.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f288b0a4f20f9a56b5d1da57e2227c661b7b16168e2f72365f57b63326e29b24"
+
 [[package]]
 name = "futures-util"
 version = "0.3.31"
@@ -2559,6 +2647,7 @@ dependencies = [
  "hyper",
  "hyper-util",
  "rustls",
+ "rustls-native-certs 0.7.3",
  "rustls-pki-types",
  "tokio",
  "tokio-rustls",
@@ -2768,7 +2857,7 @@ dependencies = [
  "serde_json",
  "synchronoise",
  "tempfile",
- "thiserror 2.0.9",
+ "thiserror 2.0.12",
  "time",
  "tracing",
  "ureq",
@@ -3603,6 +3692,7 @@ dependencies = [
  "actix-utils",
  "actix-web",
  "anyhow",
+ "async-openai",
  "async-trait",
  "brotli",
  "bstr",
@@ -3667,7 +3757,7 @@ dependencies = [
  "temp-env",
  "tempfile",
  "termcolor",
- "thiserror 2.0.9",
+ "thiserror 2.0.12",
  "time",
  "tokio",
  "toml",
@@ -3699,7 +3789,7 @@ dependencies = [
  "serde",
  "serde_json",
  "sha2",
- "thiserror 2.0.9",
+ "thiserror 2.0.12",
  "time",
  "uuid",
 ]
@@ -3731,7 +3821,7 @@ dependencies = [
  "serde_json",
  "tar",
  "tempfile",
- "thiserror 2.0.9",
+ "thiserror 2.0.12",
  "time",
  "tokio",
  "utoipa",
@@ -3838,7 +3928,7 @@ dependencies = [
  "smallvec",
  "smartstring",
  "tempfile",
- "thiserror 2.0.9",
+ "thiserror 2.0.12",
  "thread_local",
  "tiktoken-rs",
  "time",
@@ -4178,6 +4268,12 @@ version = "11.1.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0ab1bc2a289d34bd04a330323ac98a1b4bc82c9d9fcb1e66b63caa84da26b575"
 
+[[package]]
+name = "openssl-probe"
+version = "0.1.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d05e27ee213611ffe7d6348b942e8f942b37114c00cc03cec254295a4a17852e"
+
 [[package]]
 name = "option-ext"
 version = "0.2.0"
@@ -4565,7 +4661,7 @@ dependencies = [
  "parking_lot",
  "procfs",
  "protobuf",
- "thiserror 2.0.9",
+ "thiserror 2.0.12",
 ]
 
 [[package]]
@@ -4852,9 +4948,9 @@ dependencies = [
 
 [[package]]
 name = "reqwest"
-version = "0.12.12"
+version = "0.12.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "43e734407157c3c2034e0258f5e4473ddb361b1e85f95a66690d67264d7cd1da"
+checksum = "d19c46a6fdd48bc4dab94b6103fccc55d34c67cc0ad04653aad4ea2a07cd7bbb"
 dependencies = [
  "base64 0.22.1",
  "bytes",
@@ -4871,11 +4967,13 @@ dependencies = [
  "js-sys",
  "log",
  "mime",
+ "mime_guess",
  "once_cell",
  "percent-encoding",
  "pin-project-lite",
  "quinn",
  "rustls",
+ "rustls-native-certs 0.8.1",
  "rustls-pemfile",
  "rustls-pki-types",
  "serde",
@@ -4896,6 +4994,22 @@ dependencies = [
  "windows-registry",
 ]
 
+[[package]]
+name = "reqwest-eventsource"
+version = "0.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "632c55746dbb44275691640e7b40c907c16a2dc1a5842aa98aaec90da6ec6bde"
+dependencies = [
+ "eventsource-stream",
+ "futures-core",
+ "futures-timer",
+ "mime",
+ "nom",
+ "pin-project-lite",
+ "reqwest",
+ "thiserror 1.0.69",
+]
+
 [[package]]
 name = "rhai"
 version = "1.20.0"
@@ -5060,6 +5174,31 @@ dependencies = [
  "zeroize",
 ]
 
+[[package]]
+name = "rustls-native-certs"
+version = "0.7.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e5bfb394eeed242e909609f56089eecfe5fda225042e8b171791b9c95f5931e5"
+dependencies = [
+ "openssl-probe",
+ "rustls-pemfile",
+ "rustls-pki-types",
+ "schannel",
+ "security-framework 2.11.1",
+]
+
+[[package]]
+name = "rustls-native-certs"
+version = "0.8.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7fcff2dd52b58a8d98a70243663a0d234c4e2b79235637849d15913394a247d3"
+dependencies = [
+ "openssl-probe",
+ "rustls-pki-types",
+ "schannel",
+ "security-framework 3.2.0",
+]
+
 [[package]]
 name = "rustls-pemfile"
 version = "2.2.0"
@@ -5117,6 +5256,15 @@ dependencies = [
  "winapi-util",
 ]
 
+[[package]]
+name = "schannel"
+version = "0.1.27"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1f29ebaa345f945cec9fbbc532eb307f0fdad8161f281b6369539c8d84876b3d"
+dependencies = [
+ "windows-sys 0.59.0",
+]
+
 [[package]]
 name = "scopeguard"
 version = "1.2.0"
@@ -5129,6 +5277,52 @@ version = "4.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1c107b6f4780854c8b126e228ea8869f4d7b71260f962fefb57b996b8959ba6b"
 
+[[package]]
+name = "secrecy"
+version = "0.10.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e891af845473308773346dc847b2c23ee78fe442e0472ac50e22a18a93d3ae5a"
+dependencies = [
+ "serde",
+ "zeroize",
+]
+
+[[package]]
+name = "security-framework"
+version = "2.11.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "897b2245f0b511c87893af39b033e5ca9cce68824c4d7e7630b5a1d339658d02"
+dependencies = [
+ "bitflags 2.9.0",
+ "core-foundation 0.9.4",
+ "core-foundation-sys",
+ "libc",
+ "security-framework-sys",
+]
+
+[[package]]
+name = "security-framework"
+version = "3.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "271720403f46ca04f7ba6f55d438f8bd878d6b8ca0a1046e8228c4145bcbb316"
+dependencies = [
+ "bitflags 2.9.0",
+ "core-foundation 0.10.0",
+ "core-foundation-sys",
+ "libc",
+ "security-framework-sys",
+]
+
+[[package]]
+name = "security-framework-sys"
+version = "2.14.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "49db231d56a190491cb4aeda9527f1ad45345af50b0851622a7adb8c03b01c32"
+dependencies = [
+ "core-foundation-sys",
+ "libc",
+]
+
 [[package]]
 name = "segment"
 version = "0.2.5"
@@ -5139,7 +5333,7 @@ dependencies = [
  "reqwest",
  "serde",
  "serde_json",
- "thiserror 2.0.9",
+ "thiserror 2.0.12",
  "time",
 ]
 
@@ -5650,11 +5844,11 @@ dependencies = [
 
 [[package]]
 name = "thiserror"
-version = "2.0.9"
+version = "2.0.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f072643fd0190df67a8bab670c20ef5d8737177d6ac6b2e9a236cb096206b2cc"
+checksum = "567b8a2dae586314f7be2a752ec7474332959c6460e02bde30d702a66d488708"
 dependencies = [
- "thiserror-impl 2.0.9",
+ "thiserror-impl 2.0.12",
 ]
 
 [[package]]
@@ -5670,9 +5864,9 @@ dependencies = [
 
 [[package]]
 name = "thiserror-impl"
-version = "2.0.9"
+version = "2.0.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7b50fa271071aae2e6ee85f842e2e28ba8cd2c5fb67f11fcb1fd70b276f9e7d4"
+checksum = "7f7cf42b4507d8ea322120659672cf1b9dbb93f8f2d4ecfd6e51350ff5b17a1d"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -5853,10 +6047,21 @@ dependencies = [
 ]
 
 [[package]]
-name = "tokio-util"
+name = "tokio-stream"
-version = "0.7.11"
+version = "0.1.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9cf6b47b3771c49ac75ad09a6162f53ad4b8088b76ac60e8ec1455b31a189fe1"
+checksum = "eca58d7bba4a75707817a2c44174253f9236b2d5fbd055602e9d5c07c139a047"
+dependencies = [
+ "futures-core",
+ "pin-project-lite",
+ "tokio",
+]
+
+[[package]]
+name = "tokio-util"
+version = "0.7.15"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "66a539a9ad6d5d281510d5bd368c973d636c02dbf8a67300bfb6b950696ad7df"
 dependencies = [
  "bytes",
  "futures-core",
@@ -6570,14 +6775,20 @@ dependencies = [
 ]
 
 [[package]]
-name = "windows-registry"
+name = "windows-link"
-version = "0.2.0"
+version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e400001bb720a623c1c69032f8e3e4cf09984deec740f007dd2b03ec864804b0"
+checksum = "76840935b766e1b0a05c0066835fb9ec80071d4c09a16f6bd5f7e655e3c14c38"
+
+[[package]]
+name = "windows-registry"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4286ad90ddb45071efd1a66dfa43eb02dd0dfbae1545ad6cc3c51cf34d7e8ba3"
 dependencies = [
- "windows-result 0.2.0",
+ "windows-result 0.3.2",
  "windows-strings",
- "windows-targets 0.52.6",
+ "windows-targets 0.53.0",
 ]
 
 [[package]]
@@ -6591,21 +6802,20 @@ dependencies = [
 
 [[package]]
 name = "windows-result"
-version = "0.2.0"
+version = "0.3.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1d1043d8214f791817bab27572aaa8af63732e11bf84aa21a45a78d6c317ae0e"
+checksum = "c64fd11a4fd95df68efcfee5f44a294fe71b8bc6a91993e2791938abcc712252"
 dependencies = [
- "windows-targets 0.52.6",
+ "windows-link",
 ]
 
 [[package]]
 name = "windows-strings"
-version = "0.1.0"
+version = "0.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4cd9b125c486025df0eabcb585e62173c6c9eddcec5d117d3b6e8c30e2ee4d10"
+checksum = "87fa48cc5d406560701792be122a10132491cff9d0aeb23583cc2dcafc847319"
 dependencies = [
- "windows-result 0.2.0",
+ "windows-link",
- "windows-targets 0.52.6",
 ]
 
 [[package]]
@@ -6635,6 +6845,15 @@ dependencies = [
  "windows-targets 0.52.6",
 ]
 
+[[package]]
+name = "windows-sys"
+version = "0.59.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1e38bc4d79ed67fd075bcc251a1c39b32a1776bbe92e5bef1f0bf1f8c531853b"
+dependencies = [
+ "windows-targets 0.52.6",
+]
+
 [[package]]
 name = "windows-targets"
 version = "0.42.2"
@@ -6674,13 +6893,29 @@ dependencies = [
  "windows_aarch64_gnullvm 0.52.6",
  "windows_aarch64_msvc 0.52.6",
  "windows_i686_gnu 0.52.6",
- "windows_i686_gnullvm",
+ "windows_i686_gnullvm 0.52.6",
  "windows_i686_msvc 0.52.6",
  "windows_x86_64_gnu 0.52.6",
  "windows_x86_64_gnullvm 0.52.6",
  "windows_x86_64_msvc 0.52.6",
 ]
 
+[[package]]
+name = "windows-targets"
+version = "0.53.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b1e4c7e8ceaaf9cb7d7507c974735728ab453b67ef8f18febdd7c11fe59dca8b"
+dependencies = [
+ "windows_aarch64_gnullvm 0.53.0",
+ "windows_aarch64_msvc 0.53.0",
+ "windows_i686_gnu 0.53.0",
+ "windows_i686_gnullvm 0.53.0",
+ "windows_i686_msvc 0.53.0",
+ "windows_x86_64_gnu 0.53.0",
+ "windows_x86_64_gnullvm 0.53.0",
+ "windows_x86_64_msvc 0.53.0",
+]
+
 [[package]]
 name = "windows_aarch64_gnullvm"
 version = "0.42.2"
@@ -6699,6 +6934,12 @@ version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "32a4622180e7a0ec044bb555404c800bc9fd9ec262ec147edd5989ccd0c02cd3"
 
+[[package]]
+name = "windows_aarch64_gnullvm"
+version = "0.53.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "86b8d5f90ddd19cb4a147a5fa63ca848db3df085e25fee3cc10b39b6eebae764"
+
 [[package]]
 name = "windows_aarch64_msvc"
 version = "0.42.2"
@@ -6717,6 +6958,12 @@ version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "09ec2a7bb152e2252b53fa7803150007879548bc709c039df7627cabbd05d469"
 
+[[package]]
+name = "windows_aarch64_msvc"
+version = "0.53.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c7651a1f62a11b8cbd5e0d42526e55f2c99886c77e007179efff86c2b137e66c"
+
 [[package]]
 name = "windows_i686_gnu"
 version = "0.42.2"
@@ -6735,12 +6982,24 @@ version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8e9b5ad5ab802e97eb8e295ac6720e509ee4c243f69d781394014ebfe8bbfa0b"
 
+[[package]]
+name = "windows_i686_gnu"
+version = "0.53.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c1dc67659d35f387f5f6c479dc4e28f1d4bb90ddd1a5d3da2e5d97b42d6272c3"
+
 [[package]]
 name = "windows_i686_gnullvm"
 version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0eee52d38c090b3caa76c563b86c3a4bd71ef1a819287c19d586d7334ae8ed66"
 
+[[package]]
+name = "windows_i686_gnullvm"
+version = "0.53.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9ce6ccbdedbf6d6354471319e781c0dfef054c81fbc7cf83f338a4296c0cae11"
+
 [[package]]
 name = "windows_i686_msvc"
 version = "0.42.2"
@@ -6759,6 +7018,12 @@ version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "240948bc05c5e7c6dabba28bf89d89ffce3e303022809e73deaefe4f6ec56c66"
 
+[[package]]
+name = "windows_i686_msvc"
+version = "0.53.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "581fee95406bb13382d2f65cd4a908ca7b1e4c2f1917f143ba16efe98a589b5d"
+
 [[package]]
 name = "windows_x86_64_gnu"
 version = "0.42.2"
@@ -6777,6 +7042,12 @@ version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "147a5c80aabfbf0c7d901cb5895d1de30ef2907eb21fbbab29ca94c5b08b1a78"
 
+[[package]]
+name = "windows_x86_64_gnu"
+version = "0.53.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2e55b5ac9ea33f2fc1716d1742db15574fd6fc8dadc51caab1c16a3d3b4190ba"
+
 [[package]]
 name = "windows_x86_64_gnullvm"
 version = "0.42.2"
@@ -6795,6 +7066,12 @@ version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "24d5b23dc417412679681396f2b49f3de8c1473deb516bd34410872eff51ed0d"
 
+[[package]]
+name = "windows_x86_64_gnullvm"
+version = "0.53.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0a6e035dd0599267ce1ee132e51c27dd29437f63325753051e71dd9e42406c57"
+
 [[package]]
 name = "windows_x86_64_msvc"
 version = "0.42.2"
@@ -6813,6 +7090,12 @@ version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "589f6da84c646204747d1270a2a5661ea66ed1cced2631d546fdfb155959f9ec"
 
+[[package]]
+name = "windows_x86_64_msvc"
+version = "0.53.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "271414315aff87387382ec3d271b52d7ae78726f5d44ac98b4f4030c91880486"
+
 [[package]]
 name = "winnow"
 version = "0.5.40"
@@ -7089,7 +7372,7 @@ dependencies = [
  "memchr",
  "pbkdf2",
  "sha1",
- "thiserror 2.0.9",
+ "thiserror 2.0.12",
  "time",
  "xz2",
  "zeroize",

crates/benchmarks/Cargo.toml

@@ -31,7 +31,7 @@ anyhow = "1.0.95"
 bytes = "1.9.0"
 convert_case = "0.6.0"
 flate2 = "1.0.35"
-reqwest = { version = "0.12.12", features = ["blocking", "rustls-tls"], default-features = false }
+reqwest = { version = "0.12.15", features = ["blocking", "rustls-tls"], default-features = false }
 
 [features]
 default = ["milli/all-tokenizations"]

crates/meilisearch-types/src/keys.rs

@@ -308,6 +308,9 @@ pub enum Action {
     #[serde(rename = "network.update")]
     #[deserr(rename = "network.update")]
     NetworkUpdate,
+    #[serde(rename = "chat.get")]
+    #[deserr(rename = "chat.get")]
+    ChatGet,
 }
 
 impl Action {
@@ -349,6 +352,7 @@ impl Action {
             EXPERIMENTAL_FEATURES_UPDATE => Some(Self::ExperimentalFeaturesUpdate),
             NETWORK_GET => Some(Self::NetworkGet),
             NETWORK_UPDATE => Some(Self::NetworkUpdate),
+            CHAT_GET => Some(Self::ChatGet),
             _otherwise => None,
         }
     }
@@ -397,4 +401,6 @@ pub mod actions {
 
     pub const NETWORK_GET: u8 = NetworkGet.repr();
     pub const NETWORK_UPDATE: u8 = NetworkUpdate.repr();
+
+    pub const CHAT_GET: u8 = ChatGet.repr();
 }

crates/meilisearch/Cargo.toml

@@ -111,6 +111,7 @@ utoipa = { version = "5.3.1", features = [
     "openapi_extensions",
 ] }
 utoipa-scalar = { version = "0.3.0", optional = true, features = ["actix-web"] }
+async-openai = "0.28.1"
 
 [dev-dependencies]
 actix-rt = "2.10.0"

crates/meilisearch/src/routes/chat.rs

@@ -0,0 +1,32 @@
+use actix_web::web::{self, Data};
+use actix_web::HttpResponse;
+use async_openai::config::OpenAIConfig;
+use async_openai::types::CreateChatCompletionRequest;
+use async_openai::Client;
+use index_scheduler::IndexScheduler;
+use meilisearch_types::error::ResponseError;
+use meilisearch_types::keys::actions;
+
+use crate::extractors::authentication::policies::ActionPolicy;
+use crate::extractors::authentication::GuardedData;
+
+pub fn configure(cfg: &mut web::ServiceConfig) {
+    cfg.service(web::resource("").route(web::post().to(chat)));
+}
+
+/// Get a chat completion
+async fn chat(
+    _index_scheduler: GuardedData<ActionPolicy<{ actions::CHAT_GET }>, Data<IndexScheduler>>,
+    web::Json(chat_completion): web::Json<CreateChatCompletionRequest>,
+) -> Result<HttpResponse, ResponseError> {
+    // To enable later on, when the feature will be experimental
+    // index_scheduler.features().check_chat("Using the /chat route")?;
+
+    let api_key = std::env::var("MEILI_OPENAI_API_KEY")
+        .expect("cannot find OpenAI API Key (MEILI_OPENAI_API_KEY)");
+    let config = OpenAIConfig::default().with_api_key(&api_key); // we can also change the API base
+    let client = Client::with_config(config);
+    let response = client.chat().create(chat_completion).await.unwrap();
+
+    Ok(HttpResponse::Ok().json(response))
+}

crates/meilisearch/src/routes/mod.rs

@@ -52,6 +52,7 @@ const PAGINATION_DEFAULT_LIMIT_FN: fn() -> usize = || 20;
 
 mod api_key;
 pub mod batches;
+pub mod chat;
 mod dump;
 pub mod features;
 pub mod indexes;
@@ -113,7 +114,8 @@ pub fn configure(cfg: &mut web::ServiceConfig) {
         .service(web::scope("/swap-indexes").configure(swap_indexes::configure))
         .service(web::scope("/metrics").configure(metrics::configure))
         .service(web::scope("/experimental-features").configure(features::configure))
-        .service(web::scope("/network").configure(network::configure));
+        .service(web::scope("/network").configure(network::configure))
+        .service(web::scope("/chat").configure(chat::configure));
 
     #[cfg(feature = "swagger")]
     {