{"slug": "arena-free-added-to-the-directory", "title": "Arena (Free) added to the directory", "summary": "Arena (Free), the free anonymous multi-model chat and blind A/B voting service behind the public LLM, image, and code leaderboards at arena.ai (formerly LMArena/Chatbot Arena), has been added to the Uprouter provider directory as an unofficial web-cookie integration. Uprouter rates Arena (Free) as medium risk, noting that automated access relies on the arena-auth cookie plus optional Cloudflare cf_clearance/__cf_bm and reCAPTCHA tokens, is rate-limited and subject to bot checks, and may put accounts at risk because arena.ai's terms are aimed at human benchmarking. Arena (Free) publishes no per-1M-token pricing and has no paid tiers, and the directory lists the rotating lineup including gpt-5 (400k context), claude-sonnet-4-6 (1M), gemini-3.1-pro-preview (1.0M), and Grok 4.3 (1M).", "body_md": "# > Arena (Free)\n\n[arena.ai](https://arena.ai)\n\nArena.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.\n\nPaste 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.\n\nFree tier present — value not quantified\n\nThis 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.\n\n| Plan | Type | Monthly | Input /1M | Output /1M | Note | \n|---|---|---|---|---|---|\n| Free | free | — | — | — | Arena is free to use (anonymous or signed-in); usage rate-limited, monetized via leaderboard data/brand sponsorships. No paid tiers. | \n\n[official pricing page](https://arena.ai)\n\nPricing normalized from public sources — always verify with the provider.\n\n### // model prices\n\n| Model | Input /1M | Output /1M | Context | \n|---|---|---|---|\n| [gpt-5](https://www.uprouter.online/models/gpt-5) | — | — | 400k | \n| [claude-sonnet-4-6](https://www.uprouter.online/models/claude-sonnet-4-6) | — | — | 1M | \n| [gemini-3.1-pro-preview](https://www.uprouter.online/models/gemini-3-1-pro-preview) | — | — | 1.0M | \n| [Grok 4.3](https://www.uprouter.online/models/grok-4-3) | — | — | 1M | \n\n## $ Does Arena (Free) have a free tier?\n\nYes — Arena (Free) offers a free tier. Always confirm current limits on Arena (Free)'s official pricing page — free tiers change without notice.\n\n## $ How much does Arena (Free) cost per 1M tokens?\n\nArena (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.\n\n## $ Is Arena (Free) safe to use?\n\nUprouter 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.\n\n## $ Can I use Arena (Free) through Uprouter Connect?\n\nArena (Free) is not marked Connect-compatible in our catalog yet. You can still use their API directly, or request compatibility via /submit.\n\nRaw community sentiment, shown unblended. Votes never feed into objective data fields like price, risk, or status — and never into sort order.\n\nNo published reviews yet — be the first.\n\n## // more_informationprice history · live status · risk & confidence · code snippets\n\n### price_history\n\nNo recorded changes yet.\n\n### live_status\n\ncurrent: unknown\nNo probes recorded yet.\n\nUprouter 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.\n\n### risk_&_confidence\n\nUnofficial cookie-based automation of arena.ai; ToS is aimed at human benchmarking, automated scraping can be blocked (Cloudflare/reCAPTCHA) and may risk the account.\n\nConfidence 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.\n\n### code_snippets\n\n```\n# Arena (Free)'s own API — get a key from their dashboard\ncurl https://arena.ai/chat/completions \\\n  -H \"Authorization: Bearer THEIR_API_KEY\" \\\n  -H \"Content-Type: application/json\" \\\n  -d '{\n    \"model\": \"gpt-5\",\n    \"messages\": [{ \"role\": \"user\", \"content\": \"Hello\" }]\n  }'\n```\n\nDirect to the provider — Uprouter receives nothing; verify their current pricing before purchasing.\n\n[AionLabsfree $0.50 est.pricing n/aconnectLow risk](https://www.uprouter.online/s/api-aionlabs-ai)\n\n[Pollinationsfree $5.00 est.pricing n/aconnectLow risk](https://www.uprouter.online/s/pollinations-ai)\n\n[LongCatfree $150.00 est.pricing n/aconnectLow risk](https://www.uprouter.online/s/longcat-chat)\n\n[Agnes AIfree $1.00 est.pricing n/aconnectMedium risk](https://www.uprouter.online/s/agnes-ai-com)\n\nRanked by neutral similarity signals only — live status, Connect compatibility, free-tier shape and free-credit proximity. Commercial relationships never influence this list.", "url": "https://wpnews.pro/news/arena-free-added-to-the-directory", "canonical_source": "https://www.uprouter.online/s/lmarena", "published_at": "2026-09-14 17:34:17+00:00", "updated_at": "2026-09-15 20:50:27.509391+00:00", "lang": "en", "topics": ["large-language-models", "ai-products", "ai-tools", "ai-infrastructure"], "entities": ["Arena (Free)", "arena.ai", "LMArena", "Uprouter", "gpt-5", "claude-sonnet-4-6", "gemini-3.1-pro-preview", "Grok 4.3"], "alternates": {"html": "https://wpnews.pro/news/arena-free-added-to-the-directory", "markdown": "https://wpnews.pro/news/arena-free-added-to-the-directory.md", "text": "https://wpnews.pro/news/arena-free-added-to-the-directory.txt", "jsonld": "https://wpnews.pro/news/arena-free-added-to-the-directory.jsonld"}}