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feat(models): add Claude Sonnet 5 support #55848

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2 changes: 2 additions & 0 deletions agent/anthropic_adapter.py
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Expand Up @@ -126,6 +126,8 @@ def _is_claude_model(model: str | None) -> bool:
_ANTHROPIC_OUTPUT_LIMITS = {
# Mythos-class named models (claude-fable-5, …) — 1M context, reasoning
"claude-fable": 128_000,
# Claude Sonnet 5
"claude-sonnet-5": 128_000,
# Claude 4.8
"claude-opus-4-8": 128_000,
# Claude 4.7
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1 change: 1 addition & 0 deletions agent/bedrock_adapter.py
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Expand Up @@ -1297,6 +1297,7 @@ def classify_bedrock_error(error_message: str) -> str:

BEDROCK_CONTEXT_LENGTHS: Dict[str, int] = {
# Anthropic Claude models on Bedrock
"anthropic.claude-sonnet-5": 1_000_000,
"anthropic.claude-opus-4-6": 200_000,
"anthropic.claude-sonnet-4-6": 200_000,
"anthropic.claude-sonnet-4-5": 200_000,
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1 change: 1 addition & 0 deletions agent/model_metadata.py
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Expand Up @@ -195,6 +195,7 @@ def _save_model_metadata_disk_cache(data: Dict[str, Dict[str, Any]]) -> None:
# OpenRouter-prefixed models resolve via OpenRouter live API or models.dev.
"claude-fable-5": 1000000,
"claude-fable": 1000000,
"claude-sonnet-5": 1000000,
"claude-opus-4-8": 1000000,
"claude-opus-4.8": 1000000,
"claude-opus-4-7": 1000000,
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1 change: 1 addition & 0 deletions agent/reasoning_timeouts.py
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Expand Up @@ -98,6 +98,7 @@
# ``claude-opus-4`` so non-thinking Claude 3.x or future
# non-reasoning Claude variants don't match.
("claude-opus-4", 240),
("claude-sonnet-5", 180),
("claude-sonnet-4.5", 180),
("claude-sonnet-4.6", 180),
# xAI Grok reasoning variants. Explicit reasoning-only keys
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24 changes: 24 additions & 0 deletions agent/usage_pricing.py
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Expand Up @@ -165,6 +165,18 @@ class CostResult:
source_url="https://platform.claude.com/docs/en/about-claude/pricing",
pricing_version="anthropic-pricing-2026-05",
),
(
"anthropic",
"claude-sonnet-5",
): PricingEntry(
input_cost_per_million=Decimal("3.00"),
output_cost_per_million=Decimal("15.00"),
cache_read_cost_per_million=Decimal("0.30"),

@teknium1 teknium1 Jul 15, 2026

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Anthropic currently lists Sonnet 5 introductory pricing through 2026-08-31 as $2 input / $10 output / $0.20 cache read / $2.50 5-minute cache write per MTok. Please use those effective rates here and in the matching Bedrock entry; $3/$15 is the rate starting 2026-09-01.

cache_write_cost_per_million=Decimal("3.75"),
source="official_docs_snapshot",
source_url="https://platform.claude.com/docs/en/about-claude/pricing",
pricing_version="anthropic-pricing-2026-06",
),
(
"anthropic",
"claude-sonnet-4-6",
Expand Down Expand Up @@ -457,6 +469,18 @@ class CostResult:
source_url="https://aws.amazon.com/bedrock/pricing/",
pricing_version="bedrock-pricing-2026-04",
),
(
"bedrock",
"anthropic.claude-sonnet-5",
): PricingEntry(
input_cost_per_million=Decimal("3.00"),
output_cost_per_million=Decimal("15.00"),
cache_read_cost_per_million=Decimal("0.30"),
cache_write_cost_per_million=Decimal("3.75"),
source="official_docs_snapshot",
source_url="https://aws.amazon.com/bedrock/pricing/",
pricing_version="bedrock-pricing-2026-06",
),
(
"bedrock",
"anthropic.claude-sonnet-4-6",
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9 changes: 9 additions & 0 deletions hermes_cli/models.py
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Expand Up @@ -36,6 +36,7 @@
# Anthropic
("anthropic/claude-opus-4.8", ""),
("anthropic/claude-opus-4.8-fast", "2x price, higher output speed"),
("anthropic/claude-sonnet-5", ""),
("anthropic/claude-sonnet-4.6", ""),
("anthropic/claude-haiku-4.5", ""),
# OpenAI
Expand Down Expand Up @@ -177,6 +178,7 @@ def _xai_curated_models() -> list[str]:
"nous": [
# Anthropic
"anthropic/claude-opus-4.8",
"anthropic/claude-sonnet-5",
"anthropic/claude-sonnet-4.6",
"anthropic/claude-haiku-4.5",
# OpenAI
Expand Down Expand Up @@ -340,6 +342,7 @@ def _xai_curated_models() -> list[str]:
],
"anthropic": [
"claude-fable-5",
"claude-sonnet-5",
"claude-opus-4-8",
"claude-opus-4-7",
"claude-opus-4-6",
Expand Down Expand Up @@ -376,6 +379,7 @@ def _xai_curated_models() -> list[str]:
"deepseek-ai/DeepSeek-V3.2",
"moonshotai/Kimi-K2.5",
"google/gemini-3.1-flash-lite-preview",
"anthropic/claude-sonnet-5",
"anthropic/claude-sonnet-4.6",
"openai/gpt-5.4",
],
Expand All @@ -400,6 +404,7 @@ def _xai_curated_models() -> list[str]:
"gpt-5-codex",
"gpt-5-nano",
"claude-fable-5",
"claude-sonnet-5",
"claude-opus-4-8",
"claude-opus-4-7",
"claude-opus-4-6",
Expand Down Expand Up @@ -498,6 +503,7 @@ def _xai_curated_models() -> list[str]:
# prefers live discovery via ListFoundationModels + ListInferenceProfiles.
# Use inference profile IDs (us.*) since most models require them.
"bedrock": [
"us.anthropic.claude-sonnet-5",
"us.anthropic.claude-sonnet-4-6",
"us.anthropic.claude-opus-4-6-v1",
"us.anthropic.claude-haiku-4-5-20251001-v1:0",
Expand Down Expand Up @@ -3153,6 +3159,7 @@ def _fetch_github_models(api_key: Optional[str] = None, timeout: float = 5.0) ->
"openai/o3-mini": "gpt-5-mini",
"openai/o4-mini": "gpt-5-mini",
"anthropic/claude-opus-4.6": "claude-opus-4.6",
"anthropic/claude-sonnet-5": "claude-sonnet-5",
"anthropic/claude-sonnet-4.6": "claude-sonnet-4.6",
"anthropic/claude-sonnet-4": "claude-sonnet-4",
"anthropic/claude-sonnet-4.5": "claude-sonnet-4.5",
Expand All @@ -3162,12 +3169,14 @@ def _fetch_github_models(api_key: Optional[str] = None, timeout: float = 5.0) ->
# dot-notation. Accept both so users who configure copilot + a
# default hyphenated Claude model don't hit HTTP 400
# "model_not_supported". See issue #6879.
"claude-sonnet-5": "claude-sonnet-5",
"claude-opus-4-6": "claude-opus-4.6",
"claude-sonnet-4-6": "claude-sonnet-4.6",
"claude-sonnet-4-0": "claude-sonnet-4",
"claude-sonnet-4-5": "claude-sonnet-4.5",
"claude-haiku-4-5": "claude-haiku-4.5",
"anthropic/claude-opus-4-6": "claude-opus-4.6",
"anthropic/claude-sonnet-5": "claude-sonnet-5",
"anthropic/claude-sonnet-4-6": "claude-sonnet-4.6",
"anthropic/claude-sonnet-4-0": "claude-sonnet-4",
"anthropic/claude-sonnet-4-5": "claude-sonnet-4.5",
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5 changes: 3 additions & 2 deletions hermes_cli/setup.py
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Expand Up @@ -84,6 +84,7 @@ def _supports_same_provider_pool_setup(provider: str) -> bool:
"gpt-4o",
"gpt-4o-mini",
"claude-opus-4.6",
"claude-sonnet-5",
"claude-sonnet-4.6",
"claude-sonnet-4.5",
"claude-haiku-4.5",
Expand All @@ -100,8 +101,8 @@ def _supports_same_provider_pool_setup(provider: str) -> bool:
"arcee": ["trinity-large-thinking", "trinity-large-preview", "trinity-mini"],
"minimax": ["MiniMax-M2.7", "MiniMax-M2.5", "MiniMax-M2.1", "MiniMax-M2"],
"minimax-cn": ["MiniMax-M2.7", "MiniMax-M2.5", "MiniMax-M2.1", "MiniMax-M2"],
"kilocode": ["anthropic/claude-opus-4.6", "anthropic/claude-sonnet-4.6", "openai/gpt-5.4", "google/gemini-3-pro-preview", "google/gemini-3-flash-preview"],
"opencode-zen": ["gpt-5.4", "gpt-5.3-codex", "claude-sonnet-4-6", "gemini-3-flash", "glm-5", "kimi-k2.5", "minimax-m2.7"],
"kilocode": ["anthropic/claude-sonnet-5", "anthropic/claude-opus-4.6", "anthropic/claude-sonnet-4.6", "openai/gpt-5.4", "google/gemini-3-pro-preview", "google/gemini-3-flash-preview"],
"opencode-zen": ["gpt-5.4", "gpt-5.3-codex", "claude-sonnet-5", "claude-sonnet-4-6", "gemini-3-flash", "glm-5", "kimi-k2.5", "minimax-m2.7"],
"opencode-go": ["kimi-k2.6", "kimi-k2.5", "glm-5.1", "glm-5", "mimo-v2.5-pro", "mimo-v2.5", "mimo-v2-pro", "mimo-v2-omni", "minimax-m2.7", "minimax-m2.5", "qwen3.7-max", "qwen3.6-plus", "qwen3.5-plus"],
"huggingface": [
"Qwen/Qwen3.5-397B-A17B", "Qwen/Qwen3-235B-A22B-Thinking-2507",
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1 change: 1 addition & 0 deletions tests/agent/test_minimax_provider.py
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Expand Up @@ -330,6 +330,7 @@ def test_claude_output_unaffected(self):
from agent.anthropic_adapter import _get_anthropic_max_output
# Sanity: Claude limits are not broken by the MiniMax entry
assert _get_anthropic_max_output("claude-sonnet-4-6") == 64_000
assert _get_anthropic_max_output("claude-sonnet-5") == 128_000


class TestMinimaxPreserveDots:
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2 changes: 2 additions & 0 deletions tests/hermes_cli/test_anthropic_picker_curated.py
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Expand Up @@ -20,13 +20,15 @@ def test_anthropic_curated_alias_survives_when_live_omits_it():
"""A curated alias missing from /v1/models still surfaces (first)."""
curated = M._PROVIDER_MODELS["anthropic"]
assert "claude-fable-5" in curated # sanity: the alias is curated
assert "claude-sonnet-5" in curated # newest Sonnet alias is curated

# Live catalog the API would actually return — no fable-5.
live = ["claude-opus-4-8", "claude-sonnet-4-6", "claude-haiku-4-5-20251001"]
with patch.object(M, "_fetch_anthropic_models", return_value=live):
result = M.provider_model_ids("anthropic")

assert "claude-fable-5" in result
assert "claude-sonnet-5" in result
# Curated order is preserved at the front.
assert result[:len(curated)] == list(curated)

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