Checkpoint configuration and implementation moonshotai/Kimi-K3 @ f831ab6, fla-org/flash-linear-attention @ 07ca1e4 · parameter count checked against the checkpoint’s tensor headers · text model only · How to read

Tokenizer

×

no parameterstokenizer(…)

Encode each prompt as a sequence of token IDs.

out
II [B batch, T positions]
Explanation

Token IDs index a vocabulary of 163,840 entries; TT counts the tokens. Images and video enter through a separate encoder, outside this plate.

Codetokenizer_config.json 149–156 · config.json 18–254
tokenizer_config.json 149–156
  "tokenizer_class": "TikTokenTokenizer",
  "unk_token": "[UNK]",
  "auto_map": {
    "AutoTokenizer": [
      "tokenization_kimi.TikTokenTokenizer",
      null
    ]
  }
config.json 18–26
  "text_config": {
    "_name_or_path": "",
    "activation_situ_beta": 4.0,
    "activation_situ_linear_beta": 25.0,
    "add_cross_attention": false,
    "architectures": [
      "KimiLinearForCausalLM"
    ],
    "attn_res_block_size": 12,
config.json 46–49
    "first_k_dense_replace": 1,
    "forced_bos_token_id": null,
    "forced_eos_token_id": null,
    "hidden_act": "situ",
config.json 66–173
    "linear_attn_config": {
      "full_attn_layers": [
        4,
        8,
        12,
        16,
        20,
        24,
        28,
        32,
        36,
        40,
        44,
        48,
        52,
        56,
        60,
        64,
        68,
        72,
        76,
        80,
        84,
        88,
        92,
        93
      ],
      "gate_lower_bound": -5.0,
      "head_dim": 128,
      "kda_layers": [
        1,
        2,
        3,
        5,
        6,
        7,
        9,
        10,
        11,
        13,
        14,
        15,
        17,
        18,
        19,
        21,
        22,
        23,
        25,
        26,
        27,
        29,
        30,
        31,
        33,
        34,
        35,
        37,
        38,
        39,
        41,
        42,
        43,
        45,
        46,
        47,
        49,
        50,
        51,
        53,
        54,
        55,
        57,
        58,
        59,
        61,
        62,
        63,
        65,
        66,
        67,
        69,
        70,
        71,
        73,
        74,
        75,
        77,
        78,
        79,
        81,
        82,
        83,
        85,
        86,
        87,
        89,
        90,
        91
      ],
      "num_heads": 96,
      "short_conv_kernel_size": 4,
      "use_full_rank_gate": true
    },
    "max_length": 20,
    "max_position_embeddings": 1048576,
    "min_length": 0,
    "mla_use_nope": true,
config.json 176–201
    "moe_intermediate_size": 3072,
    "moe_layer_freq": 1,
    "moe_renormalize": true,
    "moe_router_activation_func": "sigmoid",
    "no_repeat_ngram_size": 0,
    "num_attention_heads": 96,
    "num_beam_groups": 1,
    "num_beams": 1,
    "num_expert_group": 1,
    "num_experts": 896,
    "num_experts_per_token": 16,
    "num_hidden_layers": 93,
    "num_key_value_heads": 96,
    "num_nextn_predict_layers": 0,
    "num_return_sequences": 1,
    "num_shared_experts": 2,
    "output_attentions": false,
    "output_hidden_states": false,
    "output_scores": false,
    "pad_token_id": 163839,
    "prefix": null,
    "problem_type": null,
    "pruned_heads": {},
    "q_lora_rank": 1536,
    "qk_nope_head_dim": 128,
    "qk_rope_head_dim": 64,
config.json 246–254
    "routed_expert_hidden_size": 3584,
    "routed_scaling_factor": 1.0,
    "sep_token_id": null,
    "suppress_tokens": null,
    "task_specific_params": null,
    "temperature": 1.0,
    "tf_legacy_loss": false,
    "tie_encoder_decoder": false,
    "tie_word_embeddings": false,
Sources2

Direct evidence

The checkpoint’s tokenizer is the repository’s own TikTokenTokenizer class, loaded through AutoTokenizer.

tokenizer · moonshotai/Kimi-K3 / tokenizer_config.json
Pinned revision f831ab668142 ↗ · lines 149–156

Read code excerpt
  "tokenizer_class": "TikTokenTokenizer",
  "unk_token": "[UNK]",
  "auto_map": {
    "AutoTokenizer": [
      "tokenization_kimi.TikTokenTokenizer",
      null
    ]
  }

Direct evidence

The released text configuration: 93 layers of width 7,168, the lists of Kimi Delta Attention and full-attention layers, attention-residual blocks of 12 layers, one dense layer, 896 routed experts of which 16 are used, 2 shared experts, a routed-expert latent of 3,584 features, MLA ranks and head widths, the SiTU activation, vocabulary 163,840, untied output head.

config · moonshotai/Kimi-K3 / config.json
Pinned revision f831ab668142 ↗ · lines 18–254

Read code excerpt
  "text_config": {
    "_name_or_path": "",
    "activation_situ_beta": 4.0,
    "activation_situ_linear_beta": 25.0,
    "add_cross_attention": false,
    "architectures": [
      "KimiLinearForCausalLM"
    ],
    "attn_res_block_size": 12,

… lines 27–45 omitted …

    "first_k_dense_replace": 1,
    "forced_bos_token_id": null,
    "forced_eos_token_id": null,
    "hidden_act": "situ",

… lines 50–65 omitted …

    "linear_attn_config": {
      "full_attn_layers": [
        4,
        8,
        12,
        16,
        20,
        24,
        28,
        32,
        36,
        40,
        44,
        48,
        52,
        56,
        60,
        64,
        68,
        72,
        76,
        80,
        84,
        88,
        92,
        93
      ],
      "gate_lower_bound": -5.0,
      "head_dim": 128,
      "kda_layers": [
        1,
        2,
        3,
        5,
        6,
        7,
        9,
        10,
        11,
        13,
        14,
        15,
        17,
        18,
        19,
        21,
        22,
        23,
        25,
        26,
        27,
        29,
        30,
        31,
        33,
        34,
        35,
        37,
        38,
        39,
        41,
        42,
        43,
        45,
        46,
        47,
        49,
        50,
        51,
        53,
        54,
        55,
        57,
        58,
        59,
        61,
        62,
        63,
        65,
        66,
        67,
        69,
        70,
        71,
        73,
        74,
        75,
        77,
        78,
        79,
        81,
        82,
        83,
        85,
        86,
        87,
        89,
        90,
        91
      ],
      "num_heads": 96,
      "short_conv_kernel_size": 4,
      "use_full_rank_gate": true
    },
    "max_length": 20,
    "max_position_embeddings": 1048576,
    "min_length": 0,
    "mla_use_nope": true,

… lines 174–175 omitted …

    "moe_intermediate_size": 3072,
    "moe_layer_freq": 1,
    "moe_renormalize": true,
    "moe_router_activation_func": "sigmoid",
    "no_repeat_ngram_size": 0,
    "num_attention_heads": 96,
    "num_beam_groups": 1,
    "num_beams": 1,
    "num_expert_group": 1,
    "num_experts": 896,
    "num_experts_per_token": 16,
    "num_hidden_layers": 93,
    "num_key_value_heads": 96,
    "num_nextn_predict_layers": 0,
    "num_return_sequences": 1,
    "num_shared_experts": 2,
    "output_attentions": false,
    "output_hidden_states": false,
    "output_scores": false,
    "pad_token_id": 163839,
    "prefix": null,
    "problem_type": null,
    "pruned_heads": {},
    "q_lora_rank": 1536,
    "qk_nope_head_dim": 128,
    "qk_rope_head_dim": 64,

… lines 202–245 omitted …

    "routed_expert_hidden_size": 3584,
    "routed_scaling_factor": 1.0,
    "sep_token_id": null,
    "suppress_tokens": null,
    "task_specific_params": null,
    "temperature": 1.0,
    "tf_legacy_loss": false,
    "tie_encoder_decoder": false,
    "tie_word_embeddings": false,