Nex-N2.5-Pro
Summary
Nex-N2.5-Pro is an open-weight language model from NEX AGI, released on 8 Sept 2026. It accepts text and images and generates text, with a 262K-token context window and up to 236K output tokens per response. As of 4 Oct 2026, the lowest listed API price is $0.07 per million input tokens and $0.25 per million output tokens (OpenRouter), across 1 provider we track.
Nex-N2.5 is an agentic model built to turn goals into working, verified outcomes. Its core strength is agentic coding within a visual feedback loop: it can explore codebases, implement multi-file...
Last verified 4 Oct 2026. Every figure on this page links to its source.
Specifications
| Developer | NEX AGI |
|---|---|
| Release date | 8 Sept 2026 [OpenRouter] |
| Status | Generally available |
| Weights | Open weights [Hugging Face] |
| License | apache-2.0 [Hugging Face] |
| Parameters | 397B [Hugging Face] |
| Context window | 262K (262,144 tokens) [OpenRouter] |
| Max output | 236K tokens [OpenRouter] |
| Input | Text and images [OpenRouter] |
| Output | Text [OpenRouter] |
| Reasoning mode | Yes [OpenRouter] |
| Tool calling | Yes [OpenRouter] |
| Structured output | Yes [OpenRouter] |
| Hugging Face | nex-agi/Nex-N2.5-Pro [Hugging Face] |
Nex-N2.5-Pro API pricing by provider
USD per million tokens. Sorted by input price.
| Provider | Input | Output | Cached input | Context | Source |
|---|---|---|---|---|---|
| OpenRouter nex-agi/nex-n2.5-pro | $0.07 | $0.25 | $0.01 | 262K | OpenRouter, 4 Oct 2026 |
Frequently asked questions
What is the context window of Nex-N2.5-Pro?
Nex-N2.5-Pro has a context window of 262,144 tokens (262K) and can generate up to 235,929 tokens in a single response, according to OpenRouter.
How much does the Nex-N2.5-Pro API cost?
Nex-N2.5-Pro is listed from $0.07 per million input tokens and $0.25 per million output tokens (OpenRouter). Prices last verified 4 Oct 2026.
Is Nex-N2.5-Pro open source?
Nex-N2.5-Pro is an open-weight model: its weights are published on Hugging Face as nex-agi/Nex-N2.5-Pro under the apache-2.0 license. Check the license terms before commercial use.
When was Nex-N2.5-Pro released?
NEX AGI released Nex-N2.5-Pro on 8 Sept 2026, according to OpenRouter.
Change history
No changes detected since we started tracking this model. We re-check every source daily.