Upgrade default model to Gemini 3.6 Flash (#108)

Replace the default model `google-gla:gemini-3.5-flash` with
`google-gla:gemini-3.6-flash` across config defaults, the bundled Google
search server, unit tests, and documentation.

Model id verified against the live Gemini API: `models/gemini-3.6-flash`,
version `3.6-flash-07-2026`. No dependency changes required; the existing
`google-genai>=2.4.0` and `pydantic-ai>=1.99.0,<2` constraints already
support it.

Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: krasserm

docs/getting-started/installation.md

@@ -69,7 +69,7 @@ The core install covers everything else: SDK, CLI, bundled tool servers, and bas
 
 ## API Key
 
-Freeact uses `google-gla:gemini-3.5-flash` as the [default model](../guides/models.md). Set the API key in your environment:
+Freeact uses `google-gla:gemini-3.6-flash` as the [default model](../guides/models.md). Set the API key in your environment:
 
 ```bash
 export GEMINI_API_KEY="your-api-key"

docs/getting-started/quickstart.md

@@ -16,7 +16,7 @@ See [Installation](installation.md) for alternative setup options and sandbox mo
 
 !!! tip "Using a different model"
 
-    The current default model is `google-gla:gemini-3.5-flash`. Freeact supports any model compatible with Pydantic AI. To switch providers or configure model settings, see [Configure models](../guides/models.md).
+    The current default model is `google-gla:gemini-3.6-flash`. Freeact supports any model compatible with Pydantic AI. To switch providers or configure model settings, see [Configure models](../guides/models.md).
 
 ## 2. Enable tools
 

docs/guides/models.md

@@ -14,8 +14,8 @@ The `model` field uses Pydantic AI's `provider:model-name` format. Common provid
 
 | Provider | Prefix | Example |
 |----------|--------|---------|
-| Google (Gemini API) | `google-gla:` | `google-gla:gemini-3.5-flash` |
-| Google (Vertex AI) | `google-vertex:` | `google-vertex:gemini-3.5-flash` |
+| Google (Gemini API) | `google-gla:` | `google-gla:gemini-3.6-flash` |
+| Google (Vertex AI) | `google-vertex:` | `google-vertex:gemini-3.6-flash` |
 | Anthropic | `anthropic:` | `anthropic:claude-sonnet-4-6` |
 | OpenAI | `openai:` | `openai:gpt-5.2` |
 | OpenRouter | `openrouter:` | `openrouter:anthropic/claude-sonnet-4.6` |
@@ -30,7 +30,7 @@ The default configuration uses Google's Gemini API with medium thinking enabled:
 
 ```toml
 [agent]
-model = "google-gla:gemini-3.5-flash"
+model = "google-gla:gemini-3.6-flash"
 
 [agent.model_settings]
 google_thinking_config = { thinking_level = "medium", include_thoughts = true }

docs/reference/configuration.md

@@ -51,7 +51,7 @@ Freeact stores configuration and runtime state in `.freeact/`. Project-level cus
 
 ```toml title=".freeact/config.toml"
 [agent]
-model = "google-gla:gemini-3.5-flash"
+model = "google-gla:gemini-3.6-flash"
 # execution_timeout = 300.0     # seconds; 0 disables the timeout
 # approval_timeout = 0.0        # seconds; 0 waits forever
 # enable_persistence = true
@@ -109,7 +109,7 @@ The `[agent]` section accepts these keys:
 
 | Setting | Default | Description |
 |---------|---------|-------------|
-| `model` | `google-gla:gemini-3.5-flash` | [Model identifier](../guides/models.md#model-identifier) in `provider:model-name` format |
+| `model` | `google-gla:gemini-3.6-flash` | [Model identifier](../guides/models.md#model-identifier) in `provider:model-name` format |
 | `model_settings` | [Google thinking config](../guides/models.md#google-default) | Provider-specific [model settings](../guides/models.md#model-settings) (e.g., thinking config, temperature) |
 | `provider_settings` | unset | Custom API credentials, endpoints, or other [provider-specific options](../guides/models.md#provider-settings) |
 | `tools` | `discovery = "basic"`, web tools off | Presets for [bundled tool servers](../guides/tool-servers.md#enable-bundled-servers) and [tool discovery](../guides/tool-discovery.md) |

docs/reference/environment.md

@@ -4,7 +4,7 @@
 
 | Variable | Used by |
 |----------|---------|
-| `GEMINI_API_KEY` | The [default model](../guides/models.md#google-default) `google-gla:gemini-3.5-flash`, the bundled `google` search server ([`search` preset](../guides/tool-servers.md#enable-bundled-servers)), and the default [hybrid search](#hybrid-search) embedding model |
+| `GEMINI_API_KEY` | The [default model](../guides/models.md#google-default) `google-gla:gemini-3.6-flash`, the bundled `google` search server ([`search` preset](../guides/tool-servers.md#enable-bundled-servers)), and the default [hybrid search](#hybrid-search) embedding model |
 | `ANTHROPIC_API_KEY` | [Anthropic models](../guides/models.md#anthropic) (`anthropic:` prefix) |
 | `OPENAI_API_KEY` | [OpenAI models](../guides/models.md#openai) (`openai:` prefix) |
 | `BRAVE_API_KEY` | The bundled [`brave` search server](../guides/tool-servers.md#enable-bundled-servers) |

freeact/config/load.py

@@ -14,7 +14,7 @@
 # this file, so comments and formatting are yours to keep.
 
 [agent]
-model = "google-gla:gemini-3.5-flash"
+model = "google-gla:gemini-3.6-flash"
 # execution_timeout = 300.0     # seconds; 0 disables the timeout
 # approval_timeout = 0.0        # seconds; 0 waits forever
 # enable_persistence = true

freeact/config/schema.py

@@ -4,7 +4,7 @@
 
 from pydantic import BaseModel, ConfigDict, Field
 
-DEFAULT_MODEL_NAME = "google-gla:gemini-3.5-flash"
+DEFAULT_MODEL_NAME = "google-gla:gemini-3.6-flash"
 DEFAULT_MODEL_SETTINGS: dict[str, Any] = {
     "google_thinking_config": {
         "thinking_level": "medium",

freeact/tools/gsearch.py

@@ -51,7 +51,7 @@ async def web_search(
     )
 
     response = await client.aio.models.generate_content(
-        model="gemini-3.5-flash",
+        model="gemini-3.6-flash",
         contents=query,
         config=config,
     )

tests/unit/test_config.py

@@ -19,7 +19,7 @@ class TestSchemaDefaults:
     def test_agent_defaults(self) -> None:
         config = FreeactConfig()
 
-        assert config.agent.model == "google-gla:gemini-3.5-flash"
+        assert config.agent.model == "google-gla:gemini-3.6-flash"
         assert config.agent.model_settings["google_thinking_config"]["thinking_level"] == "medium"
         assert config.agent.execution_timeout == 300
         assert config.agent.approval_timeout == 0
@@ -210,7 +210,7 @@ def test_discovery_off_disables_pytools_server(self, tmp_path: Path) -> None:
         runtime = resolve(config, working_dir=tmp_path, env={})
 
         assert set(runtime.mcp_servers.keys()) == {"filesystem"}
-        assert runtime.model == "google-gla:gemini-3.5-flash"
+        assert runtime.model == "google-gla:gemini-3.6-flash"
         assert runtime.enable_subagents is True
         assert runtime.subagent_mode is False