Agnes 2.5 Flash is Agnes AI’s fast and efficient language model, an upgraded, fully available model based on Agnes 2.0 Flash. It continues to use an OpenAI-compatible Chat Completions interface and has been optimized for coding tasks, agent workflows, tool calls, multi-turn dialogue, reasoning, and image understanding.
agnes-2.5-flash vs agnes-2.5-pro-alpha
Output tokens cost $0.15 per million on agnes-2.5-flash and $0.90 per million on agnes-2.5-pro-alpha. Input tokens cost $0.03 per million on agnes-2.5-flash and $0.45 per million on agnes-2.5-pro-alpha. Cached input tokens are billed at $0.03 per million on agnes-2.5-flash and $0.00 per million on agnes-2.5-pro-alpha. Context lengths are 512,000 tokens on agnes-2.5-flash and 1,000,000 tokens on agnes-2.5-pro-alpha.
Agnes 2.5 Pro Alpha is Agnes AI’s paid inference model, suitable for advanced coding, scientific reasoning, long-context analysis, agent workflows, and multimodal understanding. The model is accessed via an OpenAI-compatible Chat Completions API.
Pricing & Specifications
Prices are per million tokens. Time to First Token and throughput are rolling averages measured on AIHubMix.
Promotional prices show the discounted rate; see each model page for promotion windows.
Activity Past 30 Days
Daily traffic served through AIHubMix — how demand for each model is trending.
Tokens / day
Requests / day
Performance Past 3 Days
Measured on real AIHubMix traffic, hourly buckets. Gaps mean no traffic in that hour.
Throughput (tok/s)
TTFT (s)
Uptime (%)
Cost calculator
Estimate your monthly bill for the same workload on each model.
Monthly = daily × 30. Discounted rates applied where a promotion is active.
FAQ
Which is cheaper: agnes-2.5-flash, agnes-2.5-pro-alpha?
agnes-2.5-flash: $0.15/M output tokens; agnes-2.5-pro-alpha: $0.90/M. Use the cost calculator above to estimate your own workload.
How large is each context window?
agnes-2.5-flash accepts 512,000 and agnes-2.5-pro-alpha accepts 1,000,000 input tokens. Maximum output per request is 56,500 tokens on agnes-2.5-flash and 65,536 tokens on agnes-2.5-pro-alpha.
What inputs and capabilities does each model support?
agnes-2.5-flash accepts text and image input and supports thinking; agnes-2.5-pro-alpha accepts text and image input and supports thinking.
Can I call agnes-2.5-flash and agnes-2.5-pro-alpha with the same API key?
Yes. AIHubMix serves every model on this page behind one OpenAI-compatible endpoint, so switching between them is a one-line change to the model field — no second account, key or SDK.
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