@sema-agent/core/dist/brain/model-presets.js

Stateless, task-oriented AI agent core

export const FABLE_5_COMPAT = {
    thinkingMode: "adaptive",
    effortLevels: ["low", "medium", "high", "xhigh", "max"],
    supportsTemperature: false,
};
export const FABLE_5_PROMPT_GUIDANCE = [
    "Your final message of a turn is the only text the caller is guaranteed to read. Put every conclusion, answer, and deliverable in it — lead with the outcome, then supporting detail. Never leave a result only in an intermediate message or in your reasoning.",
    "When operating autonomously: before ending your turn, check that the task is actually complete (not just planned); before any state-changing action, re-verify that the evidence supports that specific action rather than pattern-matching a familiar case.",
    "When calling tools, provide exactly ONE complete JSON value per parameter — never concatenate multiple values, never truncate, never wrap a value in commentary.",
];
export function fable5Model(overrides = {}) {
    return {
        id: "claude-fable-5",
        name: "Claude Fable 5",
        api: "anthropic-messages",
        provider: "anthropic",
        baseUrl: "https://api.anthropic.com",
        reasoning: true,
        defaultThinking: "high",
        input: ["text", "image"],
        cost: { input: 0, output: 0, cacheRead: 0, cacheWrite: 0 },
        contextWindow: 1_000_000,
        maxTokens: 64_000,
        charsPerToken: 3,
        compat: { ...FABLE_5_COMPAT },
        promptGuidance: [...FABLE_5_PROMPT_GUIDANCE],
        ...overrides,
    };
}