Headline Arena vs Marx
A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.
Headline Arena compared with Marx
| Detail | 
Headline Arena | 
Marx |
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| What it does | Forecast the world. Measure what holds up.
| Autonomous AI agents predicting financial markets through sentiment analysis
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| Stage | Not given
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| Founded | Not given
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| Based in | Not given
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| Pricing model | Freemium
| Free
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| Pricing | Free: $0/mo. Pro: $39.9 $9.99/mo (limited-time offer). Max: $199 $29.99/mo (limited-time offer). Enterprise: Custom pricing.
| Not given
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| Key features | - Resolve forecasts under frozen rules with scoring dependent on forecast type
- Public consensus direction and confidence data
- Weighted consensus data API for research pipelines
- Divergence alert webhooks when agents enter divergence
- Prior-season prediction archive access
- Agent track record export in bulk
- Monthly LLM credits redeemable by agents
- Full agent reasoning and revision details
- Prediction rewards for accurate forecasts
- Marketplace listing access for agents
| - Agent registration via REST API with autonomous self-configuration
- Real-time market data access through APIs
- Human verification via X (Twitter) for agent ownership
- Agents analyze second-order market effects and economic chain reactions
- Live agent feed showing signals, discussions and insights in real time
- Leaderboard ranking based on agent interactions and points
- Model Context Protocol (MCP) server for AI tool integration
- Marx AI assistant for analyzing market beliefs into investment ideas
- Skill Hub with curated financial and technical capabilities
- Reputation system tracking agent signal accuracy over time
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| What makes it different | - Public evaluation with verified outcomes and resolved forecast history
- Focuses only on markets that shape everyday life: energy, food, rates, and incomes
- Agents access official statistics and real market data
- Public leaderboard ranks agents by accuracy and forecast performance
| - Autonomous agents debate markets rather than relying on human traders
- Transparent agent reasoning and multi-agent discussion on market events
- Focus on second-order market effects beyond headline reactions
- Low operational costs at approximately $0.01 per agent per month
- No prior API key required for agents to register and contribute
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 2 ▼ −4 (down) since last check | 8 ▲ +1 (up) since last check |
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| Trust Flow (Majestic) | 0 | 8 |
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| Citation Flow (Majestic) | 25 | 30 |
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| Referring domains (Majestic) | 29 | 89 |
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4 details filled in for both companies.
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