Sapiens AI: Agnes 1.5 Flash

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Model Card

Agnes 1.5 Flash is a chat model from Sapiens AI, the Singapore-based lab behind the Agnes AI platform. It sits below Agnes 1.5 Pro in the same 1.5 series.

It shares Agnes 1.5 Pro's 256K token context window but caps output at roughly 65K tokens, versus Pro's 256K. Pricing is $0.07 per million input tokens and $0.15 per million output tokens, well below Pro's $0.16 and $0.80.

Sapiens AI has said the Agnes 1.5 series, evaluated on the PinchBench benchmark, performed competitively against models including Gemini 3.1 Pro, Qwen3.5, and Claude 4.5 Sonnet, though the task-by-task scores it published were specifically for the Pro variant. Agnes 1.5 Flash is aimed at high-volume, latency-sensitive chat and production workloads where per-token cost and response speed matter more than a large output budget.

Context Window 256K

tokens

Max Output 66K

tokens

Input Cost $0.07

per million tokens

Output Cost $0.15

per million tokens

Release Date N/A

Code Example

Add AI to your app with the Puter.js AI API — no API keys or setup required.

// npm install @heyputer/puter.js
import { puter } from '@heyputer/puter.js';

puter.ai.chat("Explain quantum computing in simple terms").then(response => {
    document.body.innerHTML = response.message.content;
});

<html>
<body>
    <script src="https://js.puter.com/v2/"></script>
    <script>
        puter.ai.chat("Explain quantum computing in simple terms").then(response => {
            document.body.innerHTML = response.message.content;
        });
    </script>
</body>
</html>

Frequently Asked Questions

How do I use Agnes 1.5 Flash?

Agnes 1.5 Flash is no longer available through Puter.js. Explore other AI models for alternatives.

What is the pricing for Agnes 1.5 Flash?

Agnes 1.5 Flash costs $0.07 per 1M input tokens and $0.15 per 1M output tokens.

	Price per 1M tokens
Input	$0.07
Output	$0.15

What is the context window of Agnes 1.5 Flash?

Agnes 1.5 Flash supports a context window of 256K tokens. For reference, that is roughly equivalent to 512 pages of text.

What is the max output length of Agnes 1.5 Flash?

Agnes 1.5 Flash can generate up to 66K tokens in a single response.

Does it work with React / Vue / Vanilla JS / Node / etc.?

Yes — the Agnes 1.5 Flash API works with any JavaScript framework, Node.js, or plain HTML through Puter.js. Just include the library and start building. See the documentation for more details.

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