Anthropic: Claude Opus 4.1 (batch) is a chat model built by Anthropic. It accepts up to 200K tokens of context per request. Routed through external models — ~16,875 tokens per message (50% markup over upstream cost).

Anthropic: Claude Opus 4.1 (batch) works well for general conversation, writing assistance, brainstorming, code help, and analysis. Try the sample prompts above to see its style.

About 16,875 tokens per average message. Free accounts get a 30,000-token daily pool that covers self-hosted chat; premium models are pay-as-you-go, with token top-ups from $1.

It depends on the task. /chat/compare/ lets you send the same prompt to Anthropic: Claude Opus 4.1 (batch) and any other model side-by-side — comparison is the fastest way to decide.

Yes. Outputs are yours — Free.ai does not claim rights to anything you generate.

200,000 tokens.

Replies stream token-by-token within ~1 second. Total response time depends on length and model size — small models stream faster, frontier models trade speed for depth.

Yes. Signed-in users see every chat in /account/?tab=history. You can also share a one-link copy of any conversation via the Share button.

Free.ai does not train models on your conversations. Self-hosted models stay on our GPUs. Premium models route to the upstream provider for inference.

Yes. POST to /v1/chat/ with model="anthropic/claude-opus-4.1:batch" and a messages array. Streaming SSE is supported. Full reference: /api/.

Anthropic: Claude Opus 4.1 (batch) is a premium model served by an external provider, so self-hosting is not available. Free.ai exposes it through token-based pricing.

Free accounts get a 30,000-token daily pool. When that runs out, token top-ups start at $1, pay-as-you-go — no subscription required.