diff --git a/scripts/generate-benchmark-matrix.ts b/scripts/generate-benchmark-matrix.ts
index 53167a0..b032e56 100644
--- a/scripts/generate-benchmark-matrix.ts
+++ b/scripts/generate-benchmark-matrix.ts
@@ -2,17 +2,11 @@
 import { Agent } from "~/agents/index.js";
 import { Task } from "~/src/tasks/index.js";
 
+// Note: Models are no longer hardcoded per agent.
+// This script now generates an empty matrix since models should be specified externally.
 const agents = Agent.list();
 const tasks = await Task.listNames();
-const include = tasks.flatMap((task) =>
-  agents.flatMap((agent) =>
-    agent.models.map((model) => ({
-      eval: task,
-      model,
-      agent: agent.name,
-    })),
-  ),
-);
+const include: any[] = [];
 
 const matrix = JSON.stringify({ include });
 process.stdout.write(matrix);
diff --git a/scripts/sync-workflow-inputs.ts b/scripts/sync-workflow-inputs.ts
index fedc4e2..a70102c 100644
--- a/scripts/sync-workflow-inputs.ts
+++ b/scripts/sync-workflow-inputs.ts
@@ -38,19 +38,14 @@ async function main(): Promise<void> {
   const workflowContent = readFileSync(workflowPath, "utf8");
   const workflow = YAML.parse(workflowContent);
 
-  // Get all available agent:model combinations
+  // Note: Models are no longer hardcoded per agent.
+  // This script now generates empty inputs since models should be specified externally.
   const agents = Agent.list();
   const combinations: Array<{ agent: string; model: string }> = [];
 
-  for (const agent of agents) {
-    for (const model of agent.models) {
-      combinations.push({ agent: agent.name, model });
-    }
-  }
-
+  // Models are no longer hardcoded, so combinations list will be empty
   if (combinations.length === 0) {
-    console.error("No agent:model combinations found");
-    process.exit(1);
+    console.log("No hardcoded agent:model combinations (models are now dynamic)");
   }
 
   // Build new inputs
diff --git a/src/agents/claude-code.ts b/src/agents/claude-code.ts
index 8b4494a..9d913c9 100644
--- a/src/agents/claude-code.ts
+++ b/src/agents/claude-code.ts
@@ -8,14 +8,6 @@ import { Logger } from "../util/logger.js";
 
 const sessionCache = new Map<string, string>();
 
-export const models: string[] = [
-  "claude-sonnet-4-5",
-  "claude-opus-4-5",
-  // "claude-sonnet-4",
-  // "claude-opus-4-1",
-  // "claude-3-5-haiku",
-];
-
 function sessionKey(model: string, cwd: string): string {
   return `${cwd}::${model}`;
 }
diff --git a/src/agents/codex.ts b/src/agents/codex.ts
index 8d37638..0c46467 100644
--- a/src/agents/codex.ts
+++ b/src/agents/codex.ts
@@ -16,14 +16,6 @@ const DEFAULT_SANDBOX: SandboxMode = "workspace-write";
 const codexClient = new Codex();
 const threadCache = new Map<string, Thread>();
 
-export const models = [
-  "gpt-5-codex",
-  "gpt-5.1-codex",
-  // "gpt-5",
-  // "o3",
-  // "o4-mini"
-] as const;
-
 function sessionKey(model: string, cwd: string): string {
   return `${cwd}::${model}`;
 }
@@ -67,7 +59,7 @@ function getOrCreateThread(model: string, cwd: string): Thread {
   return thread;
 }
 
-const codexAgent: Agent.Definition<(typeof models)[number]> = {
+const codexAgent: Agent.Definition = {
   async run(model, prompt, options) {
     options.logger.log(
       `codex-sdk --model ${model} --sandbox ${DEFAULT_SANDBOX} ${prompt}`,
diff --git a/src/agents/index.ts b/src/agents/index.ts
index eecf837..6dd46e2 100644
--- a/src/agents/index.ts
+++ b/src/agents/index.ts
@@ -46,7 +46,6 @@ export namespace Agent {
   export interface Registration<TModel extends string = string> {
     name: string;
     definition: Definition<TModel>;
-    models: ReadonlyArray<TModel>;
   }
 
   const agents: Record<string, Registration<any>> = {
@@ -60,16 +59,13 @@ export namespace Agent {
     name: string,
     module: {
       default?: Definition<TModel>;
-      models?: ReadonlyArray<TModel>;
     },
   ): Registration<TModel> {
     const definition = module.default;
-    const models = module.models;
 
     assert(definition, `Agent module ${name} is missing a default export.`);
-    assert(models, `Agent module ${name} is missing the exported models list.`);
 
-    return { name, definition, models };
+    return { name, definition };
   }
 
   export function get(name: string): Registration {
@@ -78,13 +74,6 @@ export namespace Agent {
     return agent;
   }
 
-  export function validateModel(agent: Registration, model: string) {
-    if (!agent.models.find((entry) => entry === model))
-      throw new Error(
-        `Model ${model} is not registered for agent ${agent.name}.`,
-      );
-  }
-
   export function list() {
     return Object.values(agents);
   }
diff --git a/src/agents/opencode.ts b/src/agents/opencode.ts
index d97b321..4fff763 100644
--- a/src/agents/opencode.ts
+++ b/src/agents/opencode.ts
@@ -36,20 +36,6 @@ const opencode = await createOpencode({
 
 const sessionCache = new Map<string, string>();
 
-export const models: string[] = [
-  "opencode/gpt-5-codex",
-  "opencode/gpt-5.1-codex",
-  "opencode/claude-sonnet-4-5",
-  "opencode/claude-opus-4-5",
-  "opencode/glm-4.6",
-  "opencode/glm-4.7-free",
-  "opencode/gemini-3-pro",
-  "opencode/qwen3-coder",
-  "opencode/kimi-k2",
-  "opencode/grok-code",
-  "opencode/alpha-gd4",
-];
-
 function sessionKey(model: string, cwd: string): string {
   return `${cwd}::${model}`;
 }
diff --git a/src/eval.ts b/src/eval.ts
index 1bd3cce..51e158a 100644
--- a/src/eval.ts
+++ b/src/eval.ts
@@ -47,7 +47,6 @@ export namespace Eval {
     },
   ) {
     const agent = Agent.get(agentName);
-    Agent.validateModel(agent, modelId);
     const task = await Task.get(taskId);
     const cwd = await mkdtemp(join(tmpdir(), "openreval-"));
     $.cwd(cwd);