UplinkSwitch

    • Is it really the model? Every day, the same test prompt goes to every model. A model always counts it the same way. A swapped one would not.

    GET https://api.uplinkswitch.com/v1/proof

    How the check works, and what it cannot detect

    ModelResultChecked
    Claude Fable 5AnthropicSame fingerprint since Oct 13Oct 19
    Claude Fable 5.1AnthropicSame fingerprint since Oct 13Oct 19
    Claude Haiku 4.5AnthropicSame fingerprint since Oct 13Oct 19
    Claude Haiku 4.5AnthropicSame fingerprint since Oct 17Oct 19
    Claude Haiku 5.5AnthropicFingerprint changed Oct 17Oct 19
    Claude Opus 4.6AnthropicSame fingerprint since Oct 13Oct 19
    Claude Opus 4.7AnthropicSame fingerprint since Oct 13Oct 19
    Claude Opus 4.8AnthropicSame fingerprint since Oct 13Oct 19
    Claude Opus 5AnthropicSame fingerprint since Oct 12Oct 19
    Claude Opus 5.5AnthropicSame fingerprint since Oct 13Oct 19
    Claude Sonnet 4.6AnthropicSame fingerprint since Oct 12Oct 19
    Claude Sonnet 5AnthropicSame fingerprint since Oct 12Oct 19
    Claude Sonnet 5.5AnthropicSame fingerprint since Oct 12Oct 19
    DeepSeek V4 Flash 0423DeepSeekFingerprint changed Oct 17Oct 19
    DeepSeek V4 Flash 0731DeepSeekSame fingerprint since Oct 12Oct 19
    DeepSeek V4 Flash Vision ExpDeepSeekSame fingerprint since Oct 12Oct 19
    DeepSeek V4 Pro 0423DeepSeekSame fingerprint since Oct 13Oct 19
    DeepSeek V4 Pro 0813DeepSeekSame fingerprint since Oct 12Oct 19
    DeepSeek V4 Pro UncensoredDeepSeekSame fingerprint since Oct 12Oct 19
    DeepSeek V4.1 FlashDeepSeekSame fingerprint since Oct 12Oct 19
    DeepSeek V4.1 Flash 1017DeepSeekSame fingerprint since Oct 19Oct 19
    DiffusionGemma 26B A4BGoogleSame fingerprint since Oct 14Oct 19
    Gemini 2.5 FlashGoogleSame fingerprint since Oct 12Oct 19
    Gemini 2.5 ProGoogleSame fingerprint since Oct 14Oct 19
    Gemini 3 Flash PreviewGoogleSame fingerprint since Oct 12Oct 19
    Gemini 3.1 Flash Lite PreviewGoogleSame fingerprint since Oct 12Oct 19
    Gemini 3.1 Pro PreviewGoogleNo answer at the last checkOct 19
    Gemini 3.1 Pro Preview (low)GoogleSame fingerprint since Oct 14Oct 19
    Gemini 3.5 FlashGoogleSame fingerprint since Oct 12Oct 19
    Gemini 3.5 Flash (extra-low)GoogleNo answer at the last checkOct 19
    Gemini 3.5 Flash (high)GoogleNo answer at the last checkOct 19
    Gemini 3.5 Flash (low)GoogleSame fingerprint since Oct 14Oct 19
    Gemini 3.5 Flash LiteGoogleSame fingerprint since Oct 13Oct 19
    Gemini 3.6 FlashGoogleSame fingerprint since Oct 17Oct 19
    Gemini 3.7 FlashGoogleSame fingerprint since Oct 19Oct 19
    Gemini 3.8 FlashGoogleSame fingerprint since Oct 12Oct 19
    Gemini 4 ArgonGoogleNo answer at the last checkOct 19
    Roleplay UncensoredIndependentSame fingerprint since Oct 12Oct 19
    Llama 3.2 11B VisionMetaSame fingerprint since Oct 13Oct 19
    Muse Glimmer 30BMetaSame fingerprint since Oct 13Oct 19
    MiniMax M2.5MiniMaxSame fingerprint since Oct 12Oct 19
    MiniMax M2.7MiniMaxSame fingerprint since Oct 12Oct 19
    MiniMax M2.7 HighspeedMiniMaxSame fingerprint since Oct 19Oct 19
    MiniMax M3MiniMaxSame fingerprint since Oct 19Oct 19
    Kimi K2.5Moonshot AIFingerprint changed Oct 19Oct 19
    Kimi K2.6Moonshot AIFingerprint changed Oct 17Oct 19
    Kimi K2.7 CodeMoonshot AISame fingerprint since Oct 19Oct 19
    Kimi K3Moonshot AISame fingerprint since Oct 12Oct 19
    Ising Calibration 1.5 31BNVIDIASame fingerprint since Oct 13Oct 19
    Nemotron 3 Ultra 550BNVIDIASame fingerprint since Oct 13Oct 19
    Nemotron 3.5 Content SafetyNVIDIASame fingerprint since Oct 13Oct 19
    GPT-4oOpenAISame fingerprint since Oct 12Oct 19
    GPT-4o miniOpenAISame fingerprint since Oct 12Oct 19
    GPT-5.3-CodexOpenAINo answer at the last checkOct 19
    GPT-5.4OpenAISame fingerprint since Oct 19Oct 19
    GPT-5.4 MiniOpenAIFingerprint changed Oct 17Oct 19
    GPT-5.5OpenAISame fingerprint since Oct 13Oct 19
    GPT-5.6 LunaOpenAISame fingerprint since Oct 16Oct 19
    GPT-5.6 SolOpenAISame fingerprint since Oct 12Oct 19
    GPT-5.6 TerraOpenAISame fingerprint since Oct 13Oct 19
    GPT-6 AstraOpenAISame fingerprint since Oct 13Oct 19
    GPT-6 LunaOpenAISame fingerprint since Oct 12Oct 19
    GPT-6 SolOpenAISame fingerprint since Oct 13Oct 19
    GPT-6.1 SolOpenAISame fingerprint since Oct 13Oct 19
    Qwen3.6 27BQwenSame fingerprint since Oct 19Oct 19
    Qwen3.7 MaxQwenSame fingerprint since Oct 16Oct 19
    Qwen3.7 PlusQwenSame fingerprint since Oct 16Oct 19
    Hy3TencentSame fingerprint since Oct 19Oct 19
    Hy4 previewTencentSame fingerprint since Oct 18Oct 19
    Grok 4.20 Multi-Agent (0309)xAISame fingerprint since Oct 12Oct 19
    Grok 4.3xAISame fingerprint since Oct 12Oct 19
    Grok 4.5xAISame fingerprint since Oct 12Oct 19
    Grok 4.6xAISame fingerprint since Oct 12Oct 19
    Grok 4.7xAISame fingerprint since Oct 12Oct 19
    MiMo V2.6 FlashXiaomiSame fingerprint since Oct 12Oct 19
    MiMo V2.6 ProXiaomiSame fingerprint since Oct 17Oct 19
    MiMo-V2.5XiaomiFingerprint changed Oct 18Oct 19
    MiMo-V2.5-ProXiaomiSame fingerprint since Oct 19Oct 19
    GLM 5.1Z.aiSame fingerprint since Oct 16Oct 19
    GLM 5.2Z.aiSame fingerprint since Oct 12Oct 19
    GLM 5.3Z.aiSame fingerprint since Oct 12Oct 19
    GLM 5.3 FlashZ.aiSame fingerprint since Oct 12Oct 19
    GLM-5.3 AbliteratedZ.aiSame fingerprint since Oct 12Oct 19
    GLM-5.3 Flash AbliteratedZ.aiSame fingerprint since Oct 12Oct 19
    GLM-5.3 Flash UncensoredZ.aiSame fingerprint since Oct 12Oct 19
    GLM-5.3 UncensoredZ.aiSame fingerprint since Oct 12Oct 19
    Hidden prompt tokens in cheap LLM APIs · Verify a statement or receipt · Re-price your bill · About UplinkSwitch