Financial, Market, Web Analytics, Trends, Search Engines, Archives
83 sources. Critical 2025-26 pivots framing the table:
- Bing Web Search APIs retired Aug 11, 2025 (Microsoft now pushes Azure AI Foundry's "Grounding with Bing Search")
- Brave retired free Search API tier Feb 2026 (now $5/mo credit-metered)
- IEX Cloud killed Aug 31, 2024
- Tavily acquired by Nebius Feb 2026
1. Equity / Market Data (regulated, redistribution-restricted)
| # | Source | Pricing | DR/Stability/Viability | Notes |
|---|---|---|---|---|
| 1 | Alpha Vantage | Free 25 req/day; $50-250/mo | 3/4/3 | Free hard-throttled; intraday lagged. Solo-dev vendor risk |
| 2 | IEX Cloud | — | DEAD Aug 31 2024 | "Blue Sky" drop-in claims unproven |
| 3 | Polygon.io | Free Basic (15-min delayed); $29-199/mo per asset | 5/5/5 | Best US stocks (full SIP CTA/UTP); Options separate SKU |
| 4 | Finnhub | Free 60/min; $80+/mo | 4/4/4 | Estonia-based; some endpoints geo-restricted |
| 5 | Twelve Data | Free 800/day, 8/min; $29-329/mo | 4/4/4 | Multi-asset; weaker outside US/EU |
| 6 | Marketstack | Free 100/mo; $10-200/mo | 2/3/3 | apilayer-owned; EOD lag often >24h on free |
| 7 | EODHD | $19.99-99.99/mo + real-time addons | 4/4/4 | International coverage (60+ exchanges) |
| 8 | Tiingo | Free hobbyist; Power $30/mo; Commercial $50+ | 4/5/5 | Clean commercial tier; US-focused; news corpus good |
| 9 | Nasdaq Data Link (Quandl) | Free core; premium per-dataset $50-thousands/mo | 5/4/4 | WIKI dataset frozen since 2018; many series now paid Sharadar/ZACKS |
| 10 | Refinitiv (LSEG) | $22-24k/user/yr seat; bulk feeds custom | 5/5/5 | Heavy licensing tree. Not for early-stage |
| 11 | Bloomberg B-PIPE / BLPAPI | Terminal $2,500/mo/user; B-PIPE six-figure floor | 5/5/5 | Strictest licensing in industry. AI-training explicitly prohibited |
| 12 | FactSet | Enterprise $12k+/seat | 5/5/5 | Estimates feed is crown jewel. Long sales cycle |
| 13 | Xignite | Custom enterprise ($1k+/mo floor) | 4/4/4 | Cleanest mid-tier licensing; built for fintech embedding |
| 14 | Intrinio | $250-2k+/mo | 4/4/4 | US-centric; options competitive with Polygon |
| 15 | Morningstar Direct | Custom enterprise | 5/5/5 | Funds + ESG differentiator |
| 16 | S&P Capital IQ Pro | ~$15k+/seat | 5/5/5 | Private company coverage is differentiator |
| 17 | Yahoo Finance (unofficial) | Free (scraping) | 4/2/1 | Violates ToS — personal/research only. Do not build a paid product on this |
| 18 | Google Finance | — | — | Deprecated since 2012. Skip |
| 19 | Stooq | Free | 3/3/3 | Polish hobbyist project; useful as backup |
| 20 | FRED (St. Louis Fed) | Free | 4/5/5 | 800K+ macro/economic series. Day 1 for Vivly |
2. Regulatory Filings
| # | Source | Pricing | DR/Viability | Notes |
|---|---|---|---|---|
| 21 | SEC EDGAR API | Free | 5/5 | 10 req/sec; User-Agent mandatory; full corpus. Day 1 |
| 22 | EDGAR Full-Text Search | Free | 5/5 | Undocumented JSON params; sec-api.io and tldrfiling resell wrappers |
| 23 | AlphaSense (Sentieo) | Enterprise (~$15k+/seat) | 5/5 | Filings + transcripts + broker research. Genius AI features |
| 24 | MCA21 (India) | Per-doc fees (₹50-100); no real API | 3/3 | Third parties (Probe42, Tofler, Signzy) wrap it |
| 25 | Companies House (UK) | Free | 5/5 | OGL; 600/5min. Day 1 candidate |
| 26 | Companies Office NZ | Free | 3/4 | API key on request |
| 27 | ASIC (Australia) | Pay-per-search; no free API | 3/3 | Aggregators (Equifax, illion) practical route |
| 28 | Bundesanzeiger (DE) | Free web; bulk paid | 4/4 | No clean REST API; Unternehmensregister has separate redist license fees |
3. Earnings / Alt-Data / News
- Earnings Whispers — No real API; partner agreements only
- Estimize — Coverage thinning post-acquisition; treat as deprecated
- Stocktwits API — Partner-only since 2023
- Seeking Alpha — No official API; RapidAPI scrapers ToS-risky
- Benzinga API — Sales-quoted; free basic news tier on AWS Marketplace. Squawk + government trades are differentiators
- Tradier — $10/mo Pro for data; brokerage account for trading. Cheap real-time options data
- Polygon News — Part of Polygon stock plans; best $/quality bundled
4. Crypto Market Data
| # | Source | Pricing | DR/Viability | Notes |
|---|---|---|---|---|
| 36 | CoinGecko | Demo free 10k credits/mo; Pro $35+/mo | 5/5 | 1 credit per call regardless of params — beats CMC for batch |
| 37 | CoinMarketCap | Free 10k credits (30/min); $79-700+/mo | 4/4 | Credit weights inflate cost (multi-coin / pagination multiply) |
| 38 | Messari | Free; Pro $30/mo; Enterprise | 4/4 | Free OK for metadata, paid for real-time |
| 39 | CryptoCompare | Free 100k/mo; Pro $80+/mo | 4/4 | CCData-owned |
| 40 | *Etherscan + Scan family | Free 5/sec; Pro $399/mo | 4/5 | Use V2 multichain key (50+ chains, single key, late 2024) |
| 41 | Dune Analytics | Free Plus tier; Plus $349/mo | 5/4 | Execution credits, not just calls |
| 42 | Glassnode | Studio basic free; Pro $39/mo; API gated to Business/Institutional mid-$thousands+ | 5/5 | Pro web tier ≠ API tier. Sales conversation needed |
| 43 | IntoTheBlock | Enterprise | 4/4 | API sales-quoted |
| 44 | Nansen | API $150-3k+/mo (credit-based) | 5/4 | Labels are proprietary IP — no redist of labels |
| 45 | Arkham Intelligence | API in private beta | 5/4 | ARKM token tied to platform |
| 46 | Alchemy | Free 30M CU/mo; Growth $49+/mo | 5/5 | eth_call = 26 CU. NFT/Token/Trace/Notify enhanced APIs are differentiator |
| 47 | Infura | Free 100k req/day legacy; credit-based 2026+ | 4/5 | ConsenSys-owned; eth_call = 80 CU (4x Alchemy) |
| 48 | QuickNode | Free 10M credits; $9-799+/mo; Flat-rate RPS from $799/mo | 5/5 | eth_call = 20 CU; Marketplace add-ons |
| 49 | Ankr | Free public endpoints; Premium ~$10+/mo | 4/4 | eth_call = 200 CU (most expensive). Decentralized backend = variable latency |
5. Web Traffic / SEO / Analytics (heavy redistribution restrictions)
| Source | Pricing | Notes |
|---|---|---|
| SimilarWeb API | Enterprise $90-200k+/yr | Hard no redistribution — display only inside customer org. Free Starter ($199/mo) is UI only |
| Semrush API | $500/mo + units ~$50 per 1M | Two units systems; complex pricing |
| Ahrefs API | $500/mo on top of $449/mo Advanced (~$949 floor) | Backlink graph is differentiator |
| Moz API | Free 200/mo; $99+/mo | DA-metric staleness vs Ahrefs |
| Sistrix | Module-priced from €100/mo | Strong DACH/EU |
| SpyFu API | $79-299/mo | US/UK only |
| SE Ranking API | Bundled $65+/mo | Good price/perf |
| Serpstat API | $59-499+/mo | Ukraine-based; geopolitical risk |
| Mangools API | Bundled $29-79/mo | Lightweight |
| Cloudflare Radar API | Free | CC BY-NC — non-commercial only on redistributed data |
| Akamai mPulse | Customer add-on | Akamai-customer scope only |
6. Trend / Search Signal
- Google Trends (official alpha) — Free in alpha, quotas TBD. Don't pin production.
- pytrends — Free; violates Google ToS for commercial; breaks every few months.
- Glimpse API — Enterprise (~$1k+/mo). Most reliable Google Trends path.
- Exploding Topics API — $99+/mo for API; curated topic universe.
- TrendHunter API — Enterprise; editorial content.
- Predict.io — Domain appears abandoned 2026.
- Treendly — $19-99/mo; small shop, cross-reference only.
7. Search Engines as APIs (post-Bing-retirement)
| # | Source | Pricing | Notes |
|---|---|---|---|
| 69 | SerpAPI | $75/mo minimum (5k); $999+ | Most mature; Google + Bing + DDG + Yandex + Baidu + Naver + Yahoo. Strong AI Overview support |
| 70 | Bright Data SERP API | PAYG $3/CPM; $499-999/mo | Volume-committed; legal indemnification |
| 71 | DataForSEO SERP | $0.60/1k queue, $1.20/1k priority, $2/1k live — no minimum | Cheapest credible option |
| 72 | Brave Search API | Free ended Feb 2026 — $5/mo entry | Independent index (not Bing-relying) |
| 73 | Tavily | Free 1k credits; PAYG $0.005-0.008/credit; Bootstrap $100/mo | Acquired by Nebius Feb 2026 — pricing/scope likely shifts |
| 74 | You.com Search API | $0.005-0.01/req | Strategic direction wobbly post-2024 |
| 75 | Exa (Metaphor) | $2.50/1k baseline; complex 75-750 credits | Semantic-first — complement, not replacement |
| 76 | Linkup | Tiered; freemium | Publisher-licensed; clean compliance |
| 77 | Kagi Search API | $25/mo Ultimate + per-req | Consumer-sub-bound |
| 78 | DuckDuckGo Instant Answer | Free | Doesn't return organic web — entity boxes only |
| 79 | Bing Web Search API | — | RETIRED Aug 11 2025. Replacement in Azure AI Agents is not a drop-in REST endpoint |
| 80 | Google Custom Search JSON API (CSE) | $5/1k beyond 100/day free; 10k/day max | Only sanctioned path to Google results. Best for compliance + in-app site search |
8. Web Archives / Historical
- Wayback Machine (CDX + Availability) — Free, ~60 req/min (tightened 2024+). NYT/Guardian/many news orgs now block archive.org_bot late 2025. 87% drop in news captures May-Oct 2025.
- archive.today (archive.ph) — Free; no formal API; operator anonymous; bypasses some paywalls — gray-area for commercial.
- Common Crawl — Free (S3 egress your cost). Petabyte scale. Columnar Index (cc-index-table) is cheap entry. Already in news category.
Critical 2025-2026 Flags
Bing Web Search API retired Aug 11, 2025. Practical replacements:
- DataForSEO SERP for cheap volume ($0.60/1k queued)
- Brave Search API for independent index hedge
- SerpAPI for mature features
- Exa for semantic search
- Google CSE as compliance fallback
Google CSE remains useful in 2026 — only sanctioned Google-results path. 10k queries/day cap disqualifies large-scale but ideal for Vivly's compliance-sensitive Enterprise tier.
IEX Cloud is dead. Tiingo and Polygon absorbed market.
Brave killed free Search API Feb 2026. Now $5/mo entry; still best independent (non-Bing-derivative) index.
Tavily acquired by Nebius Feb 2026. Reassess Q3-Q4 2026.
Wayback Machine usefulness for news degrading. Common Crawl now more reliable for historical news.
Cleanest Legal Stack for Vivly's "Unified Public + Internal"
Equities: Polygon.io (full SIP) + EODHD (international) + FRED (macro) + SEC EDGAR (filings)
Filings (intl): Companies House (UK) + Bundesanzeiger (DE, scraping risk) + sales-cycle for India MCA21
Crypto: CoinGecko Pro + Alchemy/QuickNode (RPC) + Etherscan V2 multichain key + Dune (analytics)
SEO/Web traffic: License DataForSEO SERP + SE Ranking for breadth; Ahrefs API only on Enterprise tier ($1k/mo floor). SimilarWeb display-only license — cannot pass through raw values.
Search: DataForSEO (primary) + Google CSE (compliance/fallback) + Exa (semantic) + Brave (independent index hedge)
Archives: Wayback CDX + Common Crawl columnar index