chore: default context window to 200k

README.md

@@ -329,7 +329,7 @@ The example below uses a generic OpenAI-compatible `custom` provider so the comp
       "provider": "custom",
       "model": "model-id-from-your-provider",
       "maxTokens": 8192,
-      "contextWindowTokens": 65536,
+      "contextWindowTokens": 200000,
       "temperature": 0.1
     }
   },

nanobot/cli/onboard.py

@@ -993,7 +993,7 @@ def _try_auto_fill_context_window(model: BaseModel, new_model_name: str) -> None
 
     current_context = getattr(model, "context_window_tokens", None)
 
-    # Check if current value is the default (65536)
+    # Check if current value is the default
     # We only auto-fill if the user hasn't changed it from default
     from nanobot.config.schema import AgentDefaults
 

nanobot/config/schema.py

@@ -100,7 +100,7 @@ class ModelPresetConfig(Base):
     model: str
     provider: str = "auto"
     max_tokens: int = 8192
-    context_window_tokens: int = 65_536
+    context_window_tokens: int = 200_000
     temperature: float = 0.1
     reasoning_effort: str | None = None
 
@@ -123,7 +123,7 @@ class AgentDefaults(Base):
         "auto"  # Provider name (e.g. "anthropic", "openrouter") or "auto" for auto-detection
     )
     max_tokens: int = 8192
-    context_window_tokens: int = 65_536
+    context_window_tokens: int = 200_000
     context_block_limit: int | None = None
     temperature: float = 0.1
     fallback_models: list[FallbackCandidate] = Field(default_factory=list)

nanobot/skills/my/references/examples.md

@@ -33,9 +33,9 @@ Concrete scenarios showing when and how to use the my tool effectively.
 ### Large codebase analysis
 ```
 → my(action="check")
-  → context_window_tokens: 65536
+  → context_window_tokens: 200000
 → my(action="set", key="context_window_tokens", value=131072)
-  → "Set context_window_tokens = 131072 (was 65536)"
+  → "Set context_window_tokens = 131072 (was 200000)"
 → "I've expanded my context window to handle this large codebase."
 ```
 

nanobot/webui/settings_api.py

@@ -106,7 +106,7 @@ _IMAGE_GENERATION_ASPECT_RATIOS = {
     "2:3",
     "21:9",
 }
-_CONTEXT_WINDOW_TOKEN_OPTIONS = {65_536, 262_144}
+_CONTEXT_WINDOW_TOKEN_OPTIONS = {65_536, 200_000, 262_144}
 _MODEL_CONFIGURATION_SLUG_RE = re.compile(r"[^a-z0-9_-]+")
 _ENV_REF_RE = re.compile(r"\$\{([A-Za-z_][A-Za-z0-9_]*)\}")
 
@@ -606,7 +606,7 @@ def _parse_context_window_tokens(value: str | None) -> int | None:
     except ValueError:
         raise WebUISettingsError("context_window_tokens must be an integer") from None
     if parsed not in _CONTEXT_WINDOW_TOKEN_OPTIONS:
-        raise WebUISettingsError("context_window_tokens must be 65536 or 262144")
+        raise WebUISettingsError("context_window_tokens must be 65536, 200000, or 262144")
     return parsed
 
 

tests/cli/test_restart_command.py

@@ -183,7 +183,7 @@ class TestRestartCommand:
         assert response is not None
         assert "Model: test-model" in response.content
         assert "Tokens: 0 in / 0 out" in response.content
-        assert "Context: 20k/65k (31% of input budget)" in response.content
+        assert "Context: 20k/200k (10% of input budget)" in response.content
         assert "Session: 3 messages" in response.content
         assert "Uptime: 2m 5s" in response.content
         assert "Tasks: 0 active" in response.content
@@ -256,7 +256,7 @@ class TestRestartCommand:
 
         assert response is not None
         assert "Tokens: 1200 in / 34 out" in response.content
-        assert "Context: 1k/65k (1% of input budget)" in response.content
+        assert "Context: 1k/200k (0% of input budget)" in response.content
         assert "Tasks: 0 active" in response.content
 
     @pytest.mark.asyncio

tests/config/test_config_migration.py

@@ -34,7 +34,7 @@ def test_load_config_keeps_max_tokens_and_ignores_legacy_memory_window(tmp_path)
     config = load_config(config_path)
 
     assert config.agents.defaults.max_tokens == 1234
-    assert config.agents.defaults.context_window_tokens == 65_536
+    assert config.agents.defaults.context_window_tokens == 200_000
     assert not hasattr(config.agents.defaults, "memory_window")
 
 
@@ -60,7 +60,7 @@ def test_save_config_writes_context_window_tokens_but_not_memory_window(tmp_path
     defaults = saved["agents"]["defaults"]
 
     assert defaults["maxTokens"] == 2222
-    assert defaults["contextWindowTokens"] == 65_536
+    assert defaults["contextWindowTokens"] == 200_000
     assert "memoryWindow" not in defaults
 
 
@@ -85,6 +85,7 @@ def test_onboard_does_not_crash_with_legacy_memory_window(tmp_path, monkeypatch)
     monkeypatch.setattr("nanobot.cli.commands.get_workspace_path", lambda _workspace=None: workspace)
 
     from typer.testing import CliRunner
+
     from nanobot.cli.commands import app
     runner = CliRunner()
     result = runner.invoke(app, ["onboard"], input="n\n")
@@ -131,6 +132,7 @@ def test_onboard_refresh_backfills_missing_channel_fields(tmp_path, monkeypatch)
     )
 
     from typer.testing import CliRunner
+
     from nanobot.cli.commands import app
     runner = CliRunner()
     result = runner.invoke(app, ["onboard"], input="n\n")

tests/webui/test_settings_api.py

@@ -233,11 +233,11 @@ def test_update_agent_settings_accepts_context_window_options(
     save_config(config, config_path)
     monkeypatch.setattr("nanobot.config.loader._current_config_path", config_path)
 
-    payload = update_agent_settings({"context_window_tokens": ["262144"]})
+    payload = update_agent_settings({"context_window_tokens": ["200000"]})
 
-    assert payload["agent"]["context_window_tokens"] == 262144
+    assert payload["agent"]["context_window_tokens"] == 200000
     saved = load_config(config_path)
-    assert saved.agents.defaults.context_window_tokens == 262144
+    assert saved.agents.defaults.context_window_tokens == 200000
 
 
 def test_update_model_configuration_accepts_context_window_options(
@@ -274,7 +274,10 @@ def test_update_context_window_rejects_unknown_values(
     save_config(Config(), config_path)
     monkeypatch.setattr("nanobot.config.loader._current_config_path", config_path)
 
-    with pytest.raises(WebUISettingsError, match="context_window_tokens must be 65536 or 262144"):
+    with pytest.raises(
+        WebUISettingsError,
+        match="context_window_tokens must be 65536, 200000, or 262144",
+    ):
         update_agent_settings({"context_window_tokens": ["128000"]})
 
 

webui/src/components/settings/SettingsView.tsx

@@ -195,7 +195,7 @@ type ProviderApiType = "auto" | "chat_completions" | "responses";
 type ProviderForm = { apiKey: string; apiBase: string; apiType: ProviderApiType };
 type CustomMcpTransport = "stdio" | "streamableHttp" | "sse";
 
-const CONTEXT_WINDOW_TOKEN_OPTIONS = [65_536, 262_144] as const;
+const CONTEXT_WINDOW_TOKEN_OPTIONS = [65_536, 200_000, 262_144] as const;
 const DEFERRED_MODEL_LIST_PROVIDERS = new Set([
   "aihubmix",
   "atomic_chat",
@@ -335,7 +335,7 @@ function defaultPreset(payload: SettingsPayload): SettingsPayload["model_presets
 }
 
 function normalizeContextWindowTokens(value: number | null | undefined): number {
-  return typeof value === "number" && Number.isFinite(value) && value > 0 ? value : 65_536;
+  return typeof value === "number" && Number.isFinite(value) && value > 0 ? value : 200_000;
 }
 
 function editableDefaultProvider(payload: SettingsPayload): string {
@@ -372,7 +372,7 @@ const DEFAULT_AGENT_SETTINGS_DRAFT: AgentSettingsDraft = {
   provider: "",
   modelPreset: "default",
   presetLabel: "Default",
-  contextWindowTokens: 65_536,
+  contextWindowTokens: 200_000,
   timezone: "UTC",
   botName: "nanobot",
   botIcon: "",
@@ -2552,7 +2552,8 @@ function ModelsSettings({
               value={String(form.contextWindowTokens)}
               options={CONTEXT_WINDOW_TOKEN_OPTIONS.map((tokens) => ({
                 value: String(tokens),
-                label: tokens === 262_144 ? "256K" : "64K",
+                label:
+                  tokens === 262_144 ? "256K" : tokens === 200_000 ? "200K" : "64K",
               }))}
               onChange={(value) =>
                 setForm((prev) => ({

webui/src/tests/settings-view.test.tsx

@@ -22,7 +22,7 @@ function settingsPayload(): SettingsPayload {
       has_api_key: true,
       model_preset: "default",
       max_tokens: 8192,
-      context_window_tokens: 65536,
+      context_window_tokens: 200000,
       temperature: 0.1,
       reasoning_effort: null,
       timezone: "UTC",
@@ -38,7 +38,7 @@ function settingsPayload(): SettingsPayload {
       model: "openai/gpt-4o",
       provider: "auto",
       max_tokens: 8192,
-      context_window_tokens: 65536,
+      context_window_tokens: 200000,
       temperature: 0.1,
       reasoning_effort: null,
     }],
@@ -421,6 +421,7 @@ describe("SettingsView Apps catalog", () => {
 
     expect(await screen.findByText("Context window")).toBeInTheDocument();
     expect(screen.getByRole("button", { name: "64K" })).toBeInTheDocument();
+    expect(screen.getByRole("button", { name: "200K" })).toBeInTheDocument();
     expect(screen.getByRole("button", { name: "256K" })).toBeInTheDocument();
   });