diff --git a/src/vendor_capabilities.py b/src/vendor_capabilities.py
index 03b758c4..42ea44e4 100644
--- a/src/vendor_capabilities.py
+++ b/src/vendor_capabilities.py
@@ -69,4 +69,25 @@ register(VendorCapabilities(vendor='qwen', model='qwen-max', context_window=3276
 register(VendorCapabilities(vendor='qwen', model='qwen-long', context_window=1000000, cost_input_per_mtok=0.07, cost_output_per_mtok=0.28, caching=True, notes='qwen-long supports custom chunked long-context caching'))
 register(VendorCapabilities(vendor='qwen', model='qwen-vl-plus', vision=True, context_window=131072, cost_input_per_mtok=0.21, cost_output_per_mtok=0.63))
 register(VendorCapabilities(vendor='qwen', model='qwen-vl-max', vision=True, context_window=32768, cost_input_per_mtok=0.50, cost_output_per_mtok=1.50))
-register(VendorCapabilities(vendor='qwen', model='qwen-audio', context_window=32768, cost_input_per_mtok=0.10, cost_output_per_mtok=0.30, audio=True, notes='Audio input support added 2026-06-11 (v2 matrix)'))
\ No newline at end of file
+register(VendorCapabilities(vendor='qwen', model='qwen-audio', context_window=32768, cost_input_per_mtok=0.10, cost_output_per_mtok=0.30, audio=True, notes='Audio input support added 2026-06-11 (v2 matrix)'))
+register(VendorCapabilities(vendor='anthropic', model='*', context_window=200000, cost_input_per_mtok=3.00, cost_output_per_mtok=15.00, caching=True, structured_output=True, file_search=True, mcp_support=True, computer_use=True, notes='Anthropic wildcard: Sonnet defaults. Per-model variations below.'))
+register(VendorCapabilities(vendor='anthropic', model='claude-sonnet-4-5-20250929', context_window=200000, cost_input_per_mtok=3.00, cost_output_per_mtok=15.00, caching=True, structured_output=True, file_search=True, mcp_support=True, computer_use=True))
+register(VendorCapabilities(vendor='anthropic', model='claude-sonnet-4-20250514', context_window=200000, cost_input_per_mtok=3.00, cost_output_per_mtok=15.00, caching=True, structured_output=True, file_search=True, mcp_support=True, computer_use=True))
+register(VendorCapabilities(vendor='anthropic', model='claude-sonnet-4-6', context_window=200000, cost_input_per_mtok=3.00, cost_output_per_mtok=15.00, caching=True, structured_output=True, file_search=True, mcp_support=True, computer_use=True))
+register(VendorCapabilities(vendor='anthropic', model='claude-opus-4-1-20250805', context_window=200000, cost_input_per_mtok=15.00, cost_output_per_mtok=75.00, caching=True, structured_output=True, file_search=True, mcp_support=True, computer_use=True))
+register(VendorCapabilities(vendor='anthropic', model='claude-opus-4-20250514', context_window=200000, cost_input_per_mtok=15.00, cost_output_per_mtok=75.00, caching=True, structured_output=True, file_search=True, mcp_support=True, computer_use=True))
+register(VendorCapabilities(vendor='anthropic', model='claude-opus-4-5-20251101', context_window=200000, cost_input_per_mtok=15.00, cost_output_per_mtok=75.00, caching=True, structured_output=True, file_search=True, mcp_support=True, computer_use=True))
+register(VendorCapabilities(vendor='anthropic', model='claude-opus-4-6', context_window=200000, cost_input_per_mtok=15.00, cost_output_per_mtok=75.00, caching=True, structured_output=True, file_search=True, mcp_support=True, computer_use=True))
+register(VendorCapabilities(vendor='anthropic', model='claude-opus-4-7', context_window=200000, cost_input_per_mtok=15.00, cost_output_per_mtok=75.00, caching=True, structured_output=True, file_search=True, mcp_support=True, computer_use=True))
+register(VendorCapabilities(vendor='anthropic', model='claude-opus-4-8', context_window=200000, cost_input_per_mtok=15.00, cost_output_per_mtok=75.00, caching=True, structured_output=True, file_search=True, mcp_support=True, computer_use=True))
+register(VendorCapabilities(vendor='anthropic', model='claude-haiku-4-5-20251001', context_window=200000, cost_input_per_mtok=1.00, cost_output_per_mtok=5.00, caching=True, structured_output=True, file_search=True, mcp_support=True, computer_use=True))
+register(VendorCapabilities(vendor='anthropic', model='claude-fable-5', context_window=200000, cost_input_per_mtok=3.00, cost_output_per_mtok=15.00, caching=True, structured_output=True, file_search=True, mcp_support=True, computer_use=True))
+register(VendorCapabilities(vendor='gemini', model='*', context_window=1000000, cost_input_per_mtok=1.25, cost_output_per_mtok=5.00, caching=True, vision=True, video=True, audio=True, grounding=True, structured_output=True, notes='Gemini wildcard: 1M+ context window. Per-model variations below.'))
+register(VendorCapabilities(vendor='gemini', model='gemini-3.1-pro-preview', context_window=1000000, cost_input_per_mtok=3.50, cost_output_per_mtok=10.50, caching=True, vision=True, video=True, audio=True, grounding=True, structured_output=True))
+register(VendorCapabilities(vendor='gemini', model='gemini-3-flash-preview', context_window=1000000, cost_input_per_mtok=0.15, cost_output_per_mtok=0.60, caching=True, vision=True, video=True, audio=True, grounding=True, structured_output=True))
+register(VendorCapabilities(vendor='gemini', model='gemini-2.5-flash', context_window=1000000, cost_input_per_mtok=0.15, cost_output_per_mtok=0.60, caching=True, vision=True, video=True, audio=True, grounding=True, structured_output=True))
+register(VendorCapabilities(vendor='gemini', model='gemini-2.5-flash-lite', context_window=1000000, cost_input_per_mtok=0.075, cost_output_per_mtok=0.30, caching=True, vision=True, grounding=True, structured_output=True))
+register(VendorCapabilities(vendor='deepseek', model='*', context_window=32768, cost_input_per_mtok=0.27, cost_output_per_mtok=1.10, reasoning=True, structured_output=True, notes='DeepSeek wildcard: V3 defaults. R1/reasoner variants below.'))
+register(VendorCapabilities(vendor='deepseek', model='deepseek-v3', context_window=32768, cost_input_per_mtok=0.27, cost_output_per_mtok=1.10, structured_output=True))
+register(VendorCapabilities(vendor='deepseek', model='deepseek-reasoner', context_window=32768, cost_input_per_mtok=0.55, cost_output_per_mtok=2.19, reasoning=True, structured_output=True))
+register(VendorCapabilities(vendor='deepseek', model='deepseek-r1', context_window=32768, cost_input_per_mtok=0.55, cost_output_per_mtok=2.19, reasoning=True, structured_output=True))
diff --git a/tests/test_vendor_capabilities.py b/tests/test_vendor_capabilities.py
index 8854a219..139e2996 100644
--- a/tests/test_vendor_capabilities.py
+++ b/tests/test_vendor_capabilities.py
@@ -130,3 +130,66 @@ def test_runtime_caps_override_helper_does_not_touch_other_vendors() -> None:
   assert result.local is False
  finally:
   ai_client._llama_base_url = original_url
+
+# Phase 5 t5_1/t5_2/t5_3: matrix entries for the 3 vendors that
+# had no registry entries (anthropic, gemini, deepseek).
+# These tests assume the entries are registered at module-import
+# time (not via test-time register()), so they live alongside
+# the static imports of the registry.
+
+def test_anthropic_sonnet_supports_caching_structured_output_mcp_computer_use() -> None:
+ caps = get_capabilities('anthropic', 'claude-sonnet-4-5-20250929')
+ assert caps.caching is True
+ assert caps.structured_output is True
+ assert caps.mcp_support is True
+ assert caps.computer_use is True
+ assert caps.context_window >= 180000
+
+def test_anthropic_opus_supports_caching_and_computer_use() -> None:
+ caps = get_capabilities('anthropic', 'claude-opus-4-1-20250805')
+ assert caps.caching is True
+ assert caps.computer_use is True
+ assert caps.context_window >= 180000
+
+def test_anthropic_haiku_supports_caching() -> None:
+ caps = get_capabilities('anthropic', 'claude-haiku-4-5-20251001')
+ assert caps.caching is True
+
+def test_anthropic_wildcard_falls_back_to_sonnet_defaults() -> None:
+ caps = get_capabilities('anthropic', 'claude-fable-5-unregistered')
+ assert caps.caching is True
+ assert caps.structured_output is True
+ assert caps.mcp_support is True
+ assert caps.computer_use is True
+
+def test_gemini_supports_caching_grounding_video_audio() -> None:
+ caps = get_capabilities('gemini', 'gemini-3.1-pro-preview')
+ assert caps.caching is True
+ assert caps.grounding is True
+ assert caps.video is True
+ assert caps.audio is True
+ assert caps.structured_output is True
+ assert caps.context_window >= 900000
+
+def test_gemini_vision_default() -> None:
+ caps = get_capabilities('gemini', 'gemini-3.1-pro-preview')
+ assert caps.vision is True
+
+def test_gemini_wildcard_falls_back_to_pro_defaults() -> None:
+ caps = get_capabilities('gemini', 'gemini-future-unregistered')
+ assert caps.caching is True
+ assert caps.grounding is True
+ assert caps.video is True
+ assert caps.audio is True
+ assert caps.vision is True
+ assert caps.structured_output is True
+
+def test_deepseek_supports_reasoning() -> None:
+ caps = get_capabilities('deepseek', 'deepseek-reasoner')
+ assert caps.reasoning is True
+ assert caps.structured_output is True
+
+def test_deepseek_wildcard_falls_back_to_v3_defaults() -> None:
+ caps = get_capabilities('deepseek', 'deepseek-future-unregistered')
+ assert caps.reasoning is True
+ assert caps.structured_output is True