feat(models): add GLM-5.3-Flash, DeepSeek V4 Vision, Grok 4.5/4.6

Vendors shipped four multimodal models the registry did not carry:

- glm-5.3-flash — z.ai's first natively multimodal GLM-5, 1M context,
  image + video + pdf input (glm, glm-cn, opencode-go)
- deepseek-v4-flash-vision-exp — image input at V4-Flash text parity,
  1M context / 384k output (deepseek, opencode-go)
- grok-4.6, grok-4.5 — 500k context; 4.6 has no text output limit (xai)

Capabilities needed hand entries because the existing globs mis-matched:
*glm-5* and *deepseek-v4* carry no vision, and *grok-4* would have capped
grok-4.6 at 256k instead of 500k. The grok-4.6 pattern sits above the
generic *grok-4* so it wins the first-match lookup.

Also corrects glm-4.6v / glm-4.5v, which were missing video input and
declared no maxOutput, and backfills glm-4.6v on glm-cn — zhipuai serves
it and the sibling provider already listed it.

tests/unit/opencode-go-models.test.js pins the opencode-go model list, so
its expected array moves with the registry.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

open-sse/providers/capabilities.js

@@ -94,8 +94,14 @@ export const MODEL_CAPABILITIES = {
   // Gemini image-gen / OpenAI image / xai image variants
   "gpt-image-1":       { imageOutput: true, tools: false },
 
-  // GLM vision variant (text GLM has no vision)
-  "glm-4.6v":          { vision: true, reasoning: true, thinkingFormat: "zai", contextWindow: 128000 },
+  // GLM vision variants (text GLM has no vision) — 5.3-Flash is natively
+  // multimodal per z.ai and carries the full 1M window.
+  "glm-5.3-flash":     { vision: true, videoInput: true, pdf: true, reasoning: true, thinkingFormat: "zai", contextWindow: 1000000, maxOutput: 131072 },
+  "glm-4.6v":          { vision: true, videoInput: true, reasoning: true, thinkingFormat: "zai", contextWindow: 128000, maxOutput: 32768 },
+  "glm-4.5v":          { vision: true, videoInput: true, reasoning: true, thinkingFormat: "zai", contextWindow: 64000, maxOutput: 16384 },
+
+  // DeepSeek's first V4 model with image input; text limits match V4-Flash.
+  "deepseek-v4-flash-vision-exp": { vision: true, reasoning: true, thinkingFormat: "deepseek", contextWindow: 1000000, maxOutput: 384000 },
 
   // Qwen plain coder/text (no vision) — registry "vision-model" / "coder-model" aliases
   "vision-model":      { vision: true, reasoning: true, thinkingFormat: "qwen", contextWindow: 1000000 },
@@ -234,6 +240,8 @@ export const PATTERN_CAPABILITIES = [
   // ── Grok (vision + Live Search) ──────────────────────────────────
   { pattern: "*grok*image*",    caps: { imageOutput: true } },
   { pattern: "*grok-code*",     caps: { reasoning: true, thinkingFormat: "openai", contextWindow: 256000 } },
+  // Grok 4.6: 500k context, no text output limit (docs.x.ai/developers/grok-4-6)
+  { pattern: "*grok-4.6*",      caps: { vision: true, reasoning: true, search: true, thinkingFormat: "openai", contextWindow: 500000, maxOutput: 500000 } },
   // Grok 4.5 (Grok CLI / Grok Build): 500k context per cli-chat-proxy /v1/models
   { pattern: "*grok-4.5*",      caps: { vision: true, reasoning: true, search: true, thinkingFormat: "openai", contextWindow: 500000, maxOutput: 64000 } },
   { pattern: "*grok-4*",        caps: { vision: true, reasoning: true, search: true, thinkingFormat: "openai", contextWindow: 256000 } },

open-sse/providers/registry/deepseek.js

@@ -45,6 +45,7 @@ export default {
     { id: "deepseek-v4-pro-max", name: "DeepSeek V4 Pro Max", upstreamModelId: "deepseek-v4-pro" },
     { id: "deepseek-v4-pro-none", name: "DeepSeek V4 Pro No Thinking", upstreamModelId: "deepseek-v4-pro" },
     { id: "deepseek-v4-flash", name: "DeepSeek V4 Flash" },
+    { id: "deepseek-v4-flash-vision-exp", name: "DeepSeek V4 Flash Vision (Exp)" },
     { id: "deepseek-chat", name: "DeepSeek V3.2 Chat" },
     { id: "deepseek-reasoner", name: "DeepSeek V3.2 Reasoner" },
   ],

open-sse/providers/registry/glm-cn.js

@@ -22,10 +22,12 @@ export default {
   },
   models: [
     { id: "glm-5.3", name: "GLM 5.3" },
+    { id: "glm-5.3-flash", name: "GLM 5.3 Flash (Vision)" },
     { id: "glm-5.2", name: "GLM 5.2" },
     { id: "glm-5.1", name: "GLM 5.1" },
     { id: "glm-5", name: "GLM 5" },
     { id: "glm-4.7", name: "GLM-4.7" },
+    { id: "glm-4.6v", name: "GLM 4.6V (Vision)" },
     { id: "glm-4.6", name: "GLM-4.6" },
     { id: "glm-4.5-air", name: "GLM-4.5-Air" },
   ],

open-sse/providers/registry/glm.js

@@ -46,6 +46,7 @@ export default {
   ],
   models: [
     { id: "glm-5.3", name: "GLM 5.3" },
+    { id: "glm-5.3-flash", name: "GLM 5.3 Flash (Vision)" },
     { id: "glm-5.2", name: "GLM 5.2" },
     { id: "glm-5.1", name: "GLM 5.1" },
     { id: "glm-5", name: "GLM 5" },

open-sse/providers/registry/opencode-go.js

@@ -31,12 +31,14 @@ export default {
     { format: "openai-responses", baseUrl: "https://opencode.ai/zen/go/v1/responses", auth: { combined: true, header: "Authorization", scheme: "bearer" } },
   ],
   models: [
+    { id: "glm-5.3-flash", name: "GLM 5.3 Flash (Vision)", supportedFormats: ["openai"] },
     { id: "glm-5.2", name: "GLM 5.2", supportedFormats: ["openai"] },
     { id: "glm-5.1", name: "GLM 5.1", supportedFormats: ["openai"] },
     { id: "kimi-k2.7-code", name: "Kimi K2.7 Code", supportedFormats: ["openai"] },
     { id: "kimi-k2.6", name: "Kimi K2.6", supportedFormats: ["openai"] },
     { id: "deepseek-v4-pro", name: "DeepSeek V4 Pro", supportedFormats: ["openai", "claude", "openai-responses"] },
     { id: "deepseek-v4-flash", name: "DeepSeek V4 Flash", supportedFormats: ["openai", "claude", "openai-responses"] },
+    { id: "deepseek-v4-flash-vision-exp", name: "DeepSeek V4 Flash Vision (Exp)", supportedFormats: ["openai", "claude", "openai-responses"] },
     { id: "mimo-v2.5", name: "MiMo V2.5", supportedFormats: ["openai"] },
     { id: "mimo-v2.5-pro", name: "MiMo V2.5 Pro", supportedFormats: ["openai"] },
     { id: "minimax-m3", name: "MiniMax M3", supportedFormats: ["openai", "claude"] },

open-sse/providers/registry/xai.js

@@ -27,6 +27,8 @@ export default {
     refreshUrl: "https://auth.x.ai/oauth2/token",
   },
   models: [
+    { id: "grok-4.6", name: "Grok 4.6" },
+    { id: "grok-4.5", name: "Grok 4.5" },
     { id: "grok-4", name: "Grok 4" },
     { id: "grok-4-fast-reasoning", name: "Grok 4 Fast Reasoning" },
     { id: "grok-code-fast-1", name: "Grok Code Fast" },

tests/unit/opencode-go-models.test.js

@@ -22,8 +22,8 @@ describe("OpenCode Go model catalog", () => {
   it("matches the documented model IDs", () => {
     const ids = (PROVIDER_MODELS["opencode-go"] || []).map((m) => m.id);
     expect(ids).toEqual([
-      "glm-5.2", "glm-5.1", "kimi-k2.7-code", "kimi-k2.6",
-      "deepseek-v4-pro", "deepseek-v4-flash",
+      "glm-5.3-flash", "glm-5.2", "glm-5.1", "kimi-k2.7-code", "kimi-k2.6",
+      "deepseek-v4-pro", "deepseek-v4-flash", "deepseek-v4-flash-vision-exp",
       "mimo-v2.5", "mimo-v2.5-pro",
       "minimax-m3", "minimax-m2.7", "minimax-m2.5",
       "qwen3.7-max", "qwen3.7-plus", "qwen3.6-plus",