Model card
Hemmingway-1
Hemmingway-1 is our first model, 27B and open weights. It writes like a person, not a machine, and it is built for writing. In our tests it sounds more human than any model we put next to it, at a fraction of their size.
Next to the biggest models
Hemmingway-1 next to the biggest models there are. Higher is better.
| Model | Score |
|---|---|
| Hemmingway-1 | 1330 |
| Fable 5 | 1341 |
| Kimi K3 | 1332 |
| GPT-5.5 | 1316 |
| Opus 4.7 | 1312 |
| Opus 4.8 | 1285 |
| Model | Score |
|---|---|
| Hemmingway-1 | 1026 |
| Fable 5.1 | 1024 |
| Fable 5 | 1009 |
| GLM-5.3 | 1007 |
| Kimi K3 | 996 |
| GPT-6 Astra | 976 |
| Qwen3.8 27B base | 954 |
| Model | Score |
|---|---|
| Hemmingway-1 | 1032 |
| Fable 5.1 | 1006 |
| GLM-5.3 | 996 |
| Fable 5 | 992 |
| Kimi K3 | 985 |
| GPT-6 Astra | 964 |
| Qwen3.8 27B base | 952 |
| Model | Score |
|---|---|
| Hemmingway-1 | 1197 |
| Fable 5 Max | 1277 |
| GLM-5.3 | 1254 |
| Kimi K3 | 1197 |
| Qwen3.8 Max | 1081 |
| DeepSeek V4 Pro | 1054 |
| Qwen3.8 27B base | 693 |
Hemmingway-1Other models
EQ-Bench 4 is a public benchmark. CommunicationBench, Human-Likeness and StoryBench are ours, marked internal. Four more CommunicationBench answers, word for word.
The facts
- Size
- 27B
- Made by
- Hemmingway AI (Pty) Ltd
- Built for
- Writing
- Thinking
- On, at its highest level unless you ask for less
- Longest reply
- 32,768 tokens, thinking included
- Tools
- Function calling, in OpenAI's format
- API
hemmingway-1, OpenAI-compatible. The old idhemmingway-27bstill works.- API price
- $0.24 in, $0.024 cached in, $0.90 out, per million tokens.
- Where
- The API, and open weights on Hugging Face. The Hemmingway app writes with Hemmingway-1.5.
More on Hemmingway-1
How we ran EQ-Bench 4
The public benchmark, run with its official harness, and where Hemmingway-1 placed.
Read itWhat changed from Qwen3.8-27B
The model it is built on, and what the training changed in its writing.
Read itRun it on your own hardware
The open weights, served with vLLM or Transformers, and the memory it needs.
Read itNext to ChatGPT
The same asks, side by side, and where each does better.
Read itUse Hemmingway-1
Through the OpenAI-compatible API, or from the open weights. The app writes with Hemmingway-1.5.