talkie-1930-13b-it-tf (Transformers + safetensors conversion)
This repository is a Transformers-compatible conversion of
talkie-lm/talkie-1930-13b-it, the original Talkie instruction-tuned chat model.
The upstream model is an instruction-tuned post-train of talkie-lm/talkie-1930-13b-base, fine-tuned from instruction-response pairs extracted from pre-1931 reference works and then refined with online DPO, according to the original model card.
The upstream instruction-tuned checkpoint is already BF16. This repository adds Transformers AutoModelForCausalLM / AutoTokenizer support, a chat template matching the Talkie reference code, and BF16 sharded safetensors.
This is not an official Talkie release; refer to the upstream model card for the author-provided provenance and usage notes.
Source Model
- Original model: talkie-lm/talkie-1930-13b-it
- Talkie report: talkie-lm.com
- Reference code: github.com/talkie-lm/talkie
Conversion Details
- Weight dtype: BF16
- Weight format: sharded safetensors
- Context length: 4096 tokens
- Architecture: custom Talkie code loaded with
trust_remote_code=True - Tokenizer: Talkie tiktoken-compatible tokenizer exposed through
AutoTokenizer
The public reference configuration originally advertised 2,048 positions, but the Talkie team later clarified that the model was trained with a 4,096-token context. This conversion uses the corrected 4,096-token limit.
Usage
import torch
from transformers import AutoModelForCausalLM, AutoTokenizer
path = "xlr8harder/talkie-1930-13b-it-tf"
tokenizer = AutoTokenizer.from_pretrained(path, trust_remote_code=True)
model = AutoModelForCausalLM.from_pretrained(
path,
trust_remote_code=True,
dtype=torch.bfloat16,
device_map={"": "cuda"},
use_safetensors=True,
)
For chat-style prompts:
messages = [{"role": "user", "content": "Write an essay predicting life in 1960."}]
inputs = tokenizer.apply_chat_template(
messages,
add_generation_prompt=True,
return_tensors="pt",
return_dict=True,
).to("cuda")
output = model.generate(**inputs, max_new_tokens=128)
reply = output[0, inputs["input_ids"].shape[-1]:]
print(tokenizer.decode(reply, skip_special_tokens=True))
vLLM
The included remote-code model implements the Transformers attention-interface
hooks expected by vLLM's Transformers modeling backend. For compatibility with
that backend, the original single-scalar lm_head_gain is folded into
lm_head.weight during conversion; the other Talkie gain parameters remain
explicit model parameters. Using vLLM's logit_scale-style approach was not
used because it applies scaling after the output matmul, while Talkie applies
the gain to the head weight before the matmul. In BF16 this can introduce small
rounding differences and, in smoke tests, changed one near-tied top-token
ordering.
vllm serve xlr8harder/talkie-1930-13b-it-tf \
--task generate \
--model-impl transformers \
--trust-remote-code \
--dtype bfloat16 \
--max-model-len 4096
Validation
The Transformers safetensors model was compared against the original Talkie IT checkpoint on a forward-pass smoke test. The top-10 next-token ordering matched exactly; observed max absolute logit difference was 0.25.