MythoMax 13B
Summary
MythoMax 13B is an open-weight language model from Gryphe, released on 2 Jul 2023. It accepts text and generates text, with a 8K-token context window and up to 4K output tokens per response. As of 4 Oct 2026, the lowest listed API price is $0.08 per million input tokens and $0.11 per million output tokens (OpenRouter), across 1 provider we track.
One of the highest performing and most popular fine-tunes of Llama 2 13B, with rich descriptions and roleplay. #merge
Last verified 4 Oct 2026. Every figure on this page links to its source.
Specifications
| Developer | Gryphe |
|---|---|
| Release date | 2 Jul 2023 [OpenRouter] |
| Status | Generally available |
| Weights | Open weights [Hugging Face] |
| Context window | 8K (8,192 tokens) [OpenRouter] |
| Max output | 4K tokens [OpenRouter] |
| Knowledge cutoff | 30 Jun 2023 [OpenRouter] |
| Input | Text [OpenRouter] |
| Output | Text [OpenRouter] |
| Reasoning mode | No [OpenRouter] |
| Tool calling | No [OpenRouter] |
| Structured output | Yes [OpenRouter] |
| Hugging Face | Gryphe/MythoMax-L2-13b [Hugging Face] |
MythoMax 13B API pricing by provider
USD per million tokens. Sorted by input price.
| Provider | Input | Output | Cached input | Context | Source |
|---|---|---|---|---|---|
| OpenRouter gryphe/mythomax-l2-13b | $0.08 | $0.11 | – | 4K | OpenRouter, 4 Oct 2026 |
Frequently asked questions
What is the context window of MythoMax 13B?
MythoMax 13B has a context window of 8,192 tokens (8K) and can generate up to 3,686 tokens in a single response, according to OpenRouter.
How much does the MythoMax 13B API cost?
MythoMax 13B is listed from $0.08 per million input tokens and $0.11 per million output tokens (OpenRouter). Prices last verified 4 Oct 2026.
Is MythoMax 13B open source?
MythoMax 13B is an open-weight model: its weights are published on Hugging Face as Gryphe/MythoMax-L2-13b. Check the license terms before commercial use.
When was MythoMax 13B released?
Gryphe released MythoMax 13B on 2 Jul 2023, according to OpenRouter.
Change history
No changes detected since we started tracking this model. We re-check every source daily.