{"record":{"id":"293aeed8d25cce1c","repo":"xtekky/gpt4free","slug":"failed-to-solve-gaaaaab-challenge","errorCode":null,"errorMessage":"Failed to solve 'gAAAAAB' challenge","messagePattern":"Failed to solve 'gAAAAAB' challenge","errorType":"exception","errorClass":"Exception","httpStatus":null,"severity":"error","filePath":"g4f/Provider/openai/new.py","lineNumber":414,"sourceCode":"        \"location\",\n        random.choice(window_keys),\n        time.perf_counter(),\n        str(uuid.uuid4()),\n        \"\",\n        8,\n        int(time.time()),\n    ]\n\n    return config\n\n\ndef get_answer_token(seed, diff, config):\n    answer, solved = generate_answer(seed, diff, config)\n\n    if solved:\n        return \"gAAAAAB\" + answer\n    else:\n        raise Exception(\"Failed to solve 'gAAAAAB' challenge\")\n\n\ndef generate_answer(seed, diff, config):\n    diff_len = len(diff)\n    seed_encoded = seed.encode()\n    p1 = (\n        json.dumps(config[:3], separators=(\",\", \":\"), ensure_ascii=False)[:-1] + \",\"\n    ).encode()\n    p2 = (\n        \",\"\n        + json.dumps(config[4:9], separators=(\",\", \":\"), ensure_ascii=False)[1:-1]\n        + \",\"\n    ).encode()\n    p3 = (\n        \",\" + json.dumps(config[10:], separators=(\",\", \":\"), ensure_ascii=False)[1:]\n    ).encode()\n\n    target_diff = bytes.fromhex(diff)","sourceCodeStart":396,"sourceCodeEnd":432,"githubUrl":"https://github.com/xtekky/gpt4free/blob/973504e1770928ed5fb82f43da528f441ad9ddc3/g4f/Provider/openai/new.py#L396-L432","documentation":"Raised when g4f cannot solve OpenAI/ChatGPT's proof-of-work 'gAAAAAB' challenge. generate_answer() brute-forces up to 500,000 sha3_512 hashes (new.py:434) trying to find one whose digest prefix is <= the difficulty target sent by the server; if none is found it returns solved=False and this exception is thrown. It almost always means OpenAI changed the challenge/config format or issued a difficulty too high for the attempt budget.","triggerScenarios":"Calling OpenaiChat generation when the server returns a PoW challenge whose 'difficulty' hex string is unusually long/hard, or whose config array shape changed so the hashed p1/p2/p3 segments no longer match what the server verifies; the loop at new.py:434 exhausts maxAttempts=500000 without hash_value[:diff_len] <= target_diff.","commonSituations":"OpenAI deploys a new chat-requirements payload schema; running an outdated g4f snapshot against a changed sentinel/PoW endpoint; hard challenges (4-byte+ difficulty) served to suspicious IPs; proxies/datacenter IPs getting tougher difficulty.","solutions":["Upgrade g4f to the latest version (pip install -U g4f) so the PoW solver matches the current challenge format","Retry the request: challenges vary per session and a retry often draws a solvable difficulty","Route via a residential proxy or different IP to receive an easier difficulty","Switch to another working provider while OpenAI's challenge format is in flux"],"exampleFix":"// before\nanswer = get_answer_token(seed, diff, config)  # raises on hard challenge\n\n// after\nfrom g4f.Provider.openai.new import get_answer_token\ntry:\n    answer = get_answer_token(seed, diff, config)\nexcept Exception:\n    answer = get_answer_token(seed, diff, build_config())  # rebuild config and retry once","handlingStrategy":"retry","validationCode":null,"typeGuard":null,"tryCatchPattern":"try:\n    token = get_answer_token(seed, diff, config)\nexcept Exception:\n    # challenge difficulty varies per session; rebuild config and retry once, then give up\n    token = get_answer_token(seed, diff, build_config())","preventionTips":["Keep g4f updated — OpenAI rotates the PoW challenge frequently","Use residential/clean IPs to receive lower difficulty","Catch this error and fall back to another provider instead of hammering retries"],"tags":["openai","proof-of-work","anti-bot","rate-limit"],"backgroundTag":null,"analyzedSha":"973504e1770928ed5fb82f43da528f441ad9ddc3","analyzedAt":"2026-08-14T23:45:32.408Z","schemaVersion":2},"datasetVersion":"2026-08-15T22:17:37.221Z"}