Athene-V2
Open 72B post-trained suite from Nexusflow targeting GPT-4o-level chat and agent use.
About
Athene-V2 is Nexusflow's open 72-billion-parameter model suite, released in November 2024, built by applying targeted RLHF post-training on top of Qwen-2.5-72B-Instruct rather than scaling further. It ships as two variants: Athene-V2-Chat, which Nexusflow reports as on par with GPT-4o across benchmarks and beating it in Chatbot Arena's hard and math categories, and Athene-V2-Agent, tuned for function calling and agentic tool use.
Weights are on Hugging Face with a 32K context window, but under the Nexusflow Research License rather than an OSI-approved license, so commercial terms need checking. At release it was briefly the top open model on Chatbot Arena, a notable result for a post-training-focused effort.
Specs
Context window
Pricing
Free quota
API access
Weights
Released
Benchmarks
Team-reported: on par with GPT-4o across benchmarks; beats GPT-4o-0513 in Chatbot Arena hard and math categories; Agent variant +18% function-calling success over GPT-4o (team benchmark).
Provider-reported unless a source says otherwise. Benchmarks are marketing-adjacent by nature — treat them as directional.
Use cases
Trust score — 7/10
Scored 7/10 (verified tier, metrics-v1). Evidence: Post-training on Qwen-2.5-72B-Instruct; Arena claims are team-reported.; Two variants: Chat and Agent.. License: Nexusflow Research License (not OSI-approved); check terms before commercial use..
How the trust score is built
Full methodology →- Adoption · stars/downloads, log-scaled vs peers
- 7.0/10
- Maintenance · recency, releases, issue load
- 5.0/10
- Openness · license + docs
- 7.0/10
- Manual review · sanity read + red-flag check
- 7.0/10
- · Post-training on Qwen-2.5-72B-Instruct; Arena claims are team-reported.
- · Two variants: Chat and Agent.