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Anthropic released Claude Opus 4.8 on 2026-05-27, available on OpenRouter, Anthropic, Amazon Bedrock, and Claude Platform on AWS: - https://openrouter.ai/anthropic/claude-opus-4.8 - https://openrouter.ai/anthropic/claude-opus-4.8-fast The fast-mode variant is a separate model ID (anthropic/claude-opus-4.8-fast) priced at 2x of the base model — a notable improvement over the 6x premium on older Opus generations (4.6/4.7). It is NOT a `speed: "fast"` request parameter like Opus 4.6; Anthropic's native fast-mode beta still only covers Opus 4.6. Changes: hermes_cli/models.py - Add anthropic/claude-opus-4.8 + anthropic/claude-opus-4.8-fast to the OpenRouter fallback snapshot and the Nous Portal curated list (live catalogs surface them automatically when reachable; the fallback list matters when the manifest fetch fails). - Add claude-opus-4-8 to the Anthropic-native picker list. agent/model_metadata.py - Register claude-opus-4-8 / claude-opus-4.8 in DEFAULT_CONTEXT_LENGTHS with 1M tokens (matches 4.6/4.7). agent/anthropic_adapter.py - Extend _XHIGH_EFFORT_SUBSTRINGS, _ADAPTIVE_THINKING_SUBSTRINGS, and _NO_SAMPLING_PARAMS_SUBSTRINGS with "4-8"/"4.8". 4.8 inherits the Opus 4.7 API contract: adaptive thinking only, xhigh effort level supported, sampling parameters (temperature/top_p/top_k) return 400. - Add claude-opus-4-8 to _ANTHROPIC_OUTPUT_LIMITS (128k max output, same as 4.7). Matches by substring so claude-opus-4-8-fast and date-stamped variants resolve correctly. agent/usage_pricing.py - Add anthropic/claude-opus-4-8: $5/$25 per MTok input/output, $0.50 cache read, $6.25 cache write (same as 4.6/4.7). - Add anthropic/claude-opus-4-8-fast: $10/$50 per MTok (2x), $1.00 cache read, $12.50 cache write. Per OpenRouter, the 2x premium is the only differentiator from regular Opus 4.8. - OpenRouter routes still pull pricing from the live /models API, so no static OpenRouter entry is needed. tests/agent/test_model_metadata.py - Extend the Claude 4.6+ context-length tag list with 4.8/4-8. website/static/api/model-catalog.json - Regenerated via `python scripts/build_model_catalog.py` to pick up the new entries in the OpenRouter and Nous Portal fallback lists. E2E verification (isolated sys.path import against the worktree): - _supports_adaptive_thinking, _supports_xhigh_effort, _forbids_sampling_params all return True for claude-opus-4.8 and claude-opus-4.8-fast. - _supports_fast_mode (the `speed: "fast"` request-parameter gate) stays False for 4.8 — fast mode is a separate model ID on OpenRouter, not a parameter Anthropic accepts on the base model. - DEFAULT_CONTEXT_LENGTHS resolves 1M for both notations. - resolve_billing_route + _lookup_official_docs_pricing resolve the correct $5/$25 (regular) and $10/$50 (fast) pricing for both dot-notation and dash-notation inputs. - 4.7 and 4.6 regression: behavior unchanged. Unit tests: 305 passed across tests/agent/test_usage_pricing.py, test_model_metadata.py, tests/hermes_cli/test_model_catalog.py, test_models.py, test_model_validation.py, test_models_dev_preferred_merge.py. |
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| .. | ||
| acp | ||
| acp_adapter | ||
| agent | ||
| cli | ||
| cron | ||
| docker | ||
| e2e | ||
| fakes | ||
| gateway | ||
| hermes_cli | ||
| hermes_state | ||
| honcho_plugin | ||
| integration | ||
| openviking_plugin | ||
| plugins | ||
| providers | ||
| run_agent | ||
| scripts | ||
| skills | ||
| stress | ||
| tools | ||
| tui_gateway | ||
| website | ||
| __init__.py | ||
| conftest.py | ||
| run_interrupt_test.py | ||
| test_account_usage.py | ||
| test_atomic_replace_symlinks.py | ||
| test_base_url_hostname.py | ||
| test_batch_runner_checkpoint.py | ||
| test_bitwarden_secrets.py | ||
| test_cli_file_drop.py | ||
| test_cli_manual_compress.py | ||
| test_cli_skin_integration.py | ||
| test_ctx_halving_fix.py | ||
| test_docker_home_override_scripts.py | ||
| test_empty_model_fallback.py | ||
| test_env_loader_secret_sources.py | ||
| test_evidence_store.py | ||
| test_gateway_streaming_nested_config.py | ||
| test_get_tool_definitions_cache_isolation.py | ||
| test_hermes_bootstrap.py | ||
| test_hermes_constants.py | ||
| test_hermes_home_profile_warning.py | ||
| test_hermes_logging.py | ||
| test_hermes_state.py | ||
| test_hermes_state_wal_fallback.py | ||
| test_honcho_client_config.py | ||
| test_honcho_session_context.py | ||
| test_install_sh_browser_install.py | ||
| test_install_sh_pythonpath_sanitization.py | ||
| test_install_sh_root_fhs_uv_python_path.py | ||
| test_install_sh_setup_wizard_tty_probe.py | ||
| test_install_sh_symlink_stomp.py | ||
| test_install_sh_termux_network_prereqs.py | ||
| test_ipv4_preference.py | ||
| test_lazy_session_regressions.py | ||
| test_lint_config.py | ||
| test_live_system_guard_self_test.py | ||
| test_mcp_serve.py | ||
| test_mini_swe_runner.py | ||
| test_minimax_model_validation.py | ||
| test_minimax_oauth.py | ||
| test_minisweagent_path.py | ||
| test_model_picker_scroll.py | ||
| test_model_tools.py | ||
| test_model_tools_async_bridge.py | ||
| test_ollama_num_ctx.py | ||
| test_package_json_lazy_deps.py | ||
| test_packaging_metadata.py | ||
| test_plugin_skills.py | ||
| test_process_loop_event_loop_warning.py | ||
| test_project_metadata.py | ||
| test_retry_utils.py | ||
| test_run_tests_parallel.py | ||
| test_sanitize_tool_error.py | ||
| test_sql_injection.py | ||
| test_subprocess_home_isolation.py | ||
| test_termux_all_extra_compat.py | ||
| test_timezone.py | ||
| test_toolset_distributions.py | ||
| test_toolsets.py | ||
| test_trajectory_compressor.py | ||
| test_trajectory_compressor_async.py | ||
| test_transform_llm_output_hook.py | ||
| test_transform_tool_result_hook.py | ||
| test_tui_gateway_server.py | ||
| test_utils_truthy_values.py | ||
| test_yuanbao_integration.py | ||
| test_yuanbao_markdown.py | ||
| test_yuanbao_pipeline.py | ||
| test_yuanbao_proto.py | ||