EleutherAI
12 models across 2 families · Latest: Llemma 34B (2023-09)
Championing open-source AI for everyone
EleutherAI's portfolio covers 12 active models across 2 current families, spanning classification and json / tool use. Open a model detail page to compare provider routes and sourced benchmarks.
Covers 2 workload areas across 12 active tracked models; last verified 2026-05-19.
Use it for
- Teams evaluating classification and json / tool use across this lab's releases
- Comparing model families before committing to a flagship
- Migration and pricing follow-ups across 12 tracked models
Do not use it for
- Choosing a hosting provider without opening a model page for price ladders
Active models
12
Current models from this lab, excluding deprecated ones
Active families
2
Current model families from this lab
Open catalog
12 open
10 open source / 2 open weights
Lowest output price
$0.200 /1M
Cheapest tracked output across active models, per 1M tokens
Latest dated release
2023-09-26
Llemma 34B
Freshness
2026-05-19
Researched 106d ago
Information
Release cadence
- Dated releases
- 5
- Latest model
- Llemma 34B
- Latest date
- 2023-09-26
Where this lab wins
- Classification: 1 tracked model with MMLU-class moderation/safety coverage.
- JSON/tool-use: 1 tracked model with BFCL / Nexus strict-JSON routing coverage.
Flagship quality / price signal
- Flagship
- Llemma 34B
- Selection source
- Best sourced coding Q/$
- Coding grade
- unknown
- Benchmark / output price
- Not enough sourced benchmark and price coverage
About
EleutherAI's journey began as a modest Discord server where discussions centered around the newly released GPT-3 model. Founded in July 2020 by Connor Leahy, Sid Black, and Leo Gao, it quickly evolved into a pioneering non-profit AI research lab. With a primary focus on the interpretability and alignment of large language models (LLMs), EleutherAI has made significant strides in making advanced AI technologies more accessible, fueling the open-source AI community's growth and impact. The organization has gained recognition for developing and releasing several influential models, including GPT-J, GPT-NeoX, BLOOM, VQGAN-CLIP, Stable Diffusion, and OpenFold.
Featured models
| Model | Released | Context | Input price ($/1M) | Output price ($/1M) | License | Openness |
|---|---|---|---|---|---|---|
| Llemma 34B | 2023-09-26 | 4k | - | - | Llama 2 Community | Open weights |
| Llemma 7B | 2023-09-26 | 4k | - | - | Llama 2 Community | Open weights |
| Pythia 1.4B | 2023-05-31 | 2k | - | - | Apache 2.0 | Open source |
Model families
Recent releases
- Llemma 34B- 2023-09-26
- Llemma 7B- 2023-09-26
- Pythia 1.4B- 2023-05-31
- Pythia 410M- 2023-05-31
- Pythia 12B- 2023-05-31
Explore related pages
Last reviewed: 2026-05-19. Data sourced from public lab announcements and provider documentation.