# Arena (Free) added to the directory

> Source: <https://www.uprouter.online/s/lmarena>
> Published: 2026-09-14 17:34:17+00:00

# > Arena (Free)

[arena.ai](https://arena.ai)

Arena.ai (formerly LMArena / Chatbot Arena, lmarena.ai) is a free, anonymous multi-model chat + blind A/B voting service that powers the public LLM/image/code leaderboards. It rotates a large lineup of frontier and open models. This route is an unofficial web-cookie integration (arena-auth cookie, optional Cloudflare clearance/reCAPTCHA tokens); the site also supports anonymous sessions but automated access is rate-limited and subject to bot checks.

Paste the full Cookie header from arena.ai (DevTools → Network → request → Cookie). Include arena-auth-prod-v1.0/.1… and cf_clearance/__cf_bm when present. OmniRoute uses Chrome TLS impersonation; if Arena still 403s, set providerSpecificData.recaptchaV3Token from a live browser session.

Free tier present — value not quantified

This provider offers a free tier, but its terms don’t convert cleanly into a USD figure (e.g. request-count limits or capacity-dependent pools). We refuse to print a misleading zero here. See the note below and the official pricing page for the exact limits.

| Plan | Type | Monthly | Input /1M | Output /1M | Note | 
|---|---|---|---|---|---|
| Free | free | — | — | — | Arena is free to use (anonymous or signed-in); usage rate-limited, monetized via leaderboard data/brand sponsorships. No paid tiers. | 

[official pricing page](https://arena.ai)

Pricing normalized from public sources — always verify with the provider.

### // model prices

| Model | Input /1M | Output /1M | Context | 
|---|---|---|---|
| [gpt-5](https://www.uprouter.online/models/gpt-5) | — | — | 400k | 
| [claude-sonnet-4-6](https://www.uprouter.online/models/claude-sonnet-4-6) | — | — | 1M | 
| [gemini-3.1-pro-preview](https://www.uprouter.online/models/gemini-3-1-pro-preview) | — | — | 1.0M | 
| [Grok 4.3](https://www.uprouter.online/models/grok-4-3) | — | — | 1M | 

## $ Does Arena (Free) have a free tier?

Yes — Arena (Free) offers a free tier. Always confirm current limits on Arena (Free)'s official pricing page — free tiers change without notice.

## $ How much does Arena (Free) cost per 1M tokens?

Arena (Free) does not publish simple per-1M-token pricing (it may bill per request, per output, or via a subscription plan). Check their official pricing page for exact figures.

## $ Is Arena (Free) safe to use?

Uprouter rates Arena (Free) as medium risk. Unofficial cookie-based automation of arena.ai; ToS is aimed at human benchmarking, automated scraping can be blocked (Cloudflare/reCAPTCHA) and may risk the account. Risk ratings are editorial, evidence-based, and never influenced by affiliate relationships.

## $ Can I use Arena (Free) through Uprouter Connect?

Arena (Free) is not marked Connect-compatible in our catalog yet. You can still use their API directly, or request compatibility via /submit.

Raw community sentiment, shown unblended. Votes never feed into objective data fields like price, risk, or status — and never into sort order.

No published reviews yet — be the first.

## // more_informationprice history · live status · risk & confidence · code snippets

### price_history

No recorded changes yet.

### live_status

current: unknown
No probes recorded yet.

Uprouter runs its own probes; best-effort, not a guarantee. Probe results depend on our network location and cadence — for production, always use the provider’s own status page.

### risk_&_confidence

Unofficial cookie-based automation of arena.ai; ToS is aimed at human benchmarking, automated scraping can be blocked (Cloudflare/reCAPTCHA) and may risk the account.

Confidence reflects how much verifiable evidence (official docs, probe history, community reports) backs this entry. Risk is our editorial assessment of operator reliability and terms — not financial advice.

### code_snippets

```
# Arena (Free)'s own API — get a key from their dashboard
curl https://arena.ai/chat/completions \
  -H "Authorization: Bearer THEIR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "gpt-5",
    "messages": [{ "role": "user", "content": "Hello" }]
  }'
```

Direct to the provider — Uprouter receives nothing; verify their current pricing before purchasing.

[AionLabsfree $0.50 est.pricing n/aconnectLow risk](https://www.uprouter.online/s/api-aionlabs-ai)

[Pollinationsfree $5.00 est.pricing n/aconnectLow risk](https://www.uprouter.online/s/pollinations-ai)

[LongCatfree $150.00 est.pricing n/aconnectLow risk](https://www.uprouter.online/s/longcat-chat)

[Agnes AIfree $1.00 est.pricing n/aconnectMedium risk](https://www.uprouter.online/s/agnes-ai-com)

Ranked by neutral similarity signals only — live status, Connect compatibility, free-tier shape and free-credit proximity. Commercial relationships never influence this list.