{
  "data": {
    "a": {
      "slug": "parallel-search-api",
      "name": "Parallel Search and Task APIs",
      "vendor": "Parallel Web Systems",
      "vendorUrl": "https://parallel.ai",
      "kind": "http-api",
      "category": "search",
      "summary": "Parallel's web APIs for agents.",
      "url": "https://www.anchorterminal.com/tools/parallel-search-api",
      "markdownUrl": "https://www.anchorterminal.com/tools/parallel-search-api.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/parallel-search-api.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/parallel-search-api.json",
      "transports": [
        "http",
        "streamable-http"
      ],
      "remoteUrl": "https://api.parallel.ai/v1/search",
      "packages": [
        {
          "registry": "npm",
          "name": "parallel-web"
        },
        {
          "registry": "pypi",
          "name": "parallel-web"
        }
      ],
      "auth": "mixed",
      "authNotes": "API key in the `x-api-key` header. The Search MCP at search.parallel.ai/mcp works anonymously at lower limits, takes a Bearer key, and /mcp-oauth adds OAuth. An OAuth provider can issue keys on behalf of your users.",
      "pricing": "freemium",
      "pricingNotes": "Up to 5,000 free requests a month, with $5 of free credit monthly and up to $80 at signup. Search $1 per 1,000 requests in turbo or fast, $5 in basic or advanced, 10 results included and $1 per 1,000 extra results. Extract $1 per 1,000 URLs. Task $5 (lite) to $2,400 (ultra8x) per 1,000 successful runs. Responses $10 to $250 per 1,000 by reasoning effort. Failed runs aren't billed (https://parallel.ai/pricing).",
      "priceSummary": "$1 / 1k req",
      "where": "hosted",
      "x402": {
        "level": "partial",
        "evidence": "Not on api.parallel.ai. A separate gateway at parallelmpp.dev takes x402 (USDC on Base) and MPP (Stripe or Tempo) for search and extract at $0.01 and an ultra task at $0.30. An unauthenticated POST to /api/search returned 402 with an x402 v2 challenge for 10000 base units on eip155:8453 (checked 2026-09-30) (https://docs.parallel.ai/integrations/agentic-payments).",
        "endpoints": [
          {
            "url": "https://parallelmpp.dev/api/search",
            "priceUsd": 0.01,
            "network": "eip155:8453"
          },
          {
            "url": "https://parallelmpp.dev/api/extract",
            "priceUsd": 0.01,
            "network": "eip155:8453"
          },
          {
            "url": "https://parallelmpp.dev/api/task",
            "priceUsd": 0.3,
            "network": "eip155:8453"
          }
        ]
      },
      "toolCount": 6,
      "popularity": {
        "githubStars": 28,
        "npmWeekly": 249803,
        "pypiWeekly": 994376,
        "asOf": "2026-09-30"
      },
      "docsUrl": "https://docs.parallel.ai",
      "llmsTxt": "https://docs.parallel.ai/llms.txt",
      "openapi": "https://docs.parallel.ai/public-openapi.json",
      "registryName": "ai.parallel/search-mcp",
      "capabilities": [
        "web.search",
        "web.fetch",
        "web.extract",
        "search.answer",
        "search.research"
      ],
      "tags": [
        "hosted",
        "freemium",
        "mcp",
        "llms-txt",
        "openapi",
        "x402",
        "python",
        "typescript",
        "async-jobs",
        "webhooks"
      ],
      "lastRelease": "2026-09-29",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 74.1,
        "grade": "BB",
        "agentReady": true,
        "rank": 51,
        "ranked": true,
        "rankOf": 452,
        "categoryRank": 3,
        "methodology": "0.3",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 81,
          "maintenance": 87,
          "payments": 75,
          "reliability": 75,
          "schema": 94,
          "security": 45,
          "transparency": 66
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-01"
        },
        "negative": 0,
        "verdict": "Fast-mode search at $1 per 1,000 with 10 excerpted results, and Extract at $1 per 1,000 URLs. Search defaults to advanced mode at $5 per 1,000 when `mode` is left out.",
        "strengths": [
          "Fast-mode search at $1 per 1,000 with 10 excerpted results, and Extract at $1 per 1,000 URLs",
          "Task runs billed only on success, and documented limits of 600 searches and 2,000 task creations a minute",
          "Keyless hosted Search MCP, with Bearer and OAuth endpoints for higher limits",
          "Public OpenAPI, llms.txt and an errors table that says which codes to retry",
          "Changelog entries most weeks and SDK releases several times a month"
        ],
        "weaknesses": [
          "Search defaults to advanced mode at $5 per 1,000 when `mode` is left out",
          "SDKs retry Task creation on 429 and 5xx with no idempotency key",
          "x402 and MPP only through parallelmpp.dev at a flat $0.01, not on api.parallel.ai",
          "No prompt-injection guidance, no security.txt and no public subprocessor list",
          "No retention period stated outside the EU endpoint"
        ],
        "agentNotes": [
          "Pass `mode: \"fast\"` on every search. Without it you pay the advanced rate",
          "Create Task runs with `max_retries=0` and check for an existing run before retrying",
          "Give an `objective` plus two or three short `search_queries`. That's what ranks the excerpts",
          "On 402, check available balance rather than total. Running tasks reserve credit",
          "Prefer natural-language source guidance to domain filters. The docs say filters can cut result quality"
        ],
        "metrics": {
          "kind": "remote",
          "measured": false
        },
        "reviewCount": 8,
        "avgRating": 3.6,
        "history": [
          {
            "basis": "public evidence",
            "confidence": "medium",
            "grade": "BB",
            "methodology": "0.3",
            "pending": [
              "performance",
              "tasks"
            ],
            "run": "2026-10-01",
            "runLabel": "October 2026 research run",
            "score": 74.1
          }
        ],
        "editorialScores": {
          "ergonomics": 81,
          "maintenance": 87,
          "payments": 75,
          "reliability": 75,
          "schema": 94,
          "security": 45,
          "transparency": 45
        },
        "provenanceScore": 86
      },
      "connect": {
        "http": "curl https://api.parallel.ai/v1/search -H \"x-api-key: $PARALLEL_API_KEY\" -H \"Content-Type: application/json\" \\\n  -d '{\"mode\":\"fast\",\"objective\":\"Latest Parallel Web Systems announcements\",\"search_queries\":[\"Parallel Web Systems news\"]}'",
        "claudeCode": "claude mcp add --transport http parallel-search https://search.parallel.ai/mcp",
        "config": {
          "mcpServers": {
            "parallel-search": {
              "headers": {
                "Authorization": "Bearer ${PARALLEL_API_KEY}"
              },
              "url": "https://search.parallel.ai/mcp"
            }
          }
        },
        "x402": "curl -i -X POST https://parallelmpp.dev/api/search -H 'content-type: application/json' -d '{\"query\":\"test\"}'\n# 402 -\u003e pay $0.01 USDC on eip155:8453 (or MPP via Stripe/Tempo) -\u003e resend"
      },
      "letme": {
        "capability": "https://letme.dev/web.search",
        "tool": "https://letme.dev/parallel-search-api"
      },
      "area": "web-data",
      "unitPrices": [
        {
          "item": "Search, turbo or fast",
          "unit": "1k-requests",
          "usd": 1,
          "note": "10 results included"
        },
        {
          "item": "Search, basic or advanced",
          "unit": "1k-requests",
          "usd": 5,
          "note": "advanced is the default mode"
        },
        {
          "item": "Extract",
          "unit": "1k-pages",
          "usd": 1
        },
        {
          "item": "Task, lite processor",
          "unit": "1k-calls",
          "usd": 5
        },
        {
          "item": "Task, pro processor",
          "unit": "1k-calls",
          "usd": 100
        },
        {
          "item": "Responses, medium effort",
          "unit": "1k-requests",
          "usd": 50
        },
        {
          "item": "x402 search via gateway",
          "unit": "call",
          "usd": 0.01,
          "note": "parallelmpp.dev"
        }
      ],
      "provenance": {
        "legalEntity": "Parallel Web Systems Inc.",
        "domain": "parallel.ai",
        "domainRegistered": "2017-12-16",
        "domainNote": "Registered in 2017 and transferred on 2024-07-01, so the registration date predates the company's use of it.",
        "endpointOnVendorDomain": true,
        "terms": "https://parallel.ai/terms-of-service",
        "privacy": "https://parallel.ai/privacy-policy",
        "statusPage": "https://status.parallel.ai",
        "changelog": "https://docs.parallel.ai/resources/changelog",
        "securityTxt": "none",
        "checked": "2026-09-30",
        "score": 86
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/parallel-search-api.json",
      "live": {
        "slug": "parallel-search-api",
        "probe": {
          "target": "https://api.parallel.ai/v1/search",
          "method": "get",
          "lastAt": "2026-10-05T03:17:30.450368773Z",
          "lastOk": true,
          "lastStatus": 401,
          "lastMs": 1121,
          "lastNote": "asks for credentials",
          "authRequired": true,
          "uptime24h": 100,
          "uptime30d": 100,
          "p50ms24h": 1127,
          "p95ms24h": 1182,
          "samples24h": 273,
          "samples30d": 1140,
          "days": [
            {
              "date": "2026-09-30",
              "probes": 35,
              "ok": 35
            },
            {
              "date": "2026-10-01",
              "probes": 276,
              "ok": 276
            },
            {
              "date": "2026-10-02",
              "probes": 248,
              "ok": 248
            },
            {
              "date": "2026-10-03",
              "probes": 271,
              "ok": 271
            },
            {
              "date": "2026-10-04",
              "probes": 272,
              "ok": 272
            },
            {
              "date": "2026-10-05",
              "probes": 38,
              "ok": 38
            }
          ]
        },
        "vendorStatus": {
          "page": "https://status.parallel.ai",
          "indicator": "none",
          "summary": "All Systems Operational",
          "checkedAt": "2026-10-05T03:19:14.470204797Z"
        },
        "versions": [
          {
            "registry": "mcp-registry",
            "name": "ai.parallel/search-mcp",
            "version": "1.0.0",
            "seenAt": "2026-10-04T23:42:40.113054682Z"
          },
          {
            "registry": "npm",
            "name": "parallel-web",
            "version": "1.3.5",
            "seenAt": "2026-10-04T16:36:18.02907643Z"
          },
          {
            "registry": "pypi",
            "name": "parallel-web",
            "version": "1.3.5",
            "released": "2026-09-29",
            "seenAt": "2026-10-04T16:36:19.001388565Z"
          }
        ],
        "npmWeekly": 272076,
        "pypiWeekly": 1010177,
        "securityTxt": {
          "url": "https://parallel.ai/.well-known/security.txt",
          "state": "none",
          "checkedAt": "2026-10-04T15:15:43.015248132Z"
        },
        "llmsTxt": {
          "url": "https://docs.parallel.ai/llms.txt",
          "ok": true,
          "status": 200,
          "checkedAt": "2026-10-04T15:18:06.065239984Z"
        },
        "domain": {
          "domain": "parallel.ai",
          "registered": "2017-12-16",
          "source": "https://rdap.identitydigital.services/rdap/domain/parallel.ai",
          "checkedAt": "2026-10-04T13:04:29.88893781Z"
        },
        "pages": [
          {
            "url": "https://docs.parallel.ai/resources/changelog",
            "kind": "changelog",
            "status": 200,
            "checkedAt": "2026-10-04T15:43:52.752451731Z",
            "changedAt": "2026-10-03T15:31:59.173094113Z",
            "fingerprint": "e871cdd4ace7"
          },
          {
            "url": "https://parallel.ai/pricing",
            "kind": "pricing",
            "status": 304,
            "checkedAt": "2026-10-04T15:46:33.40854292Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "b610ae5a0e03"
          },
          {
            "url": "https://parallel.ai/privacy-policy",
            "kind": "privacy",
            "status": 304,
            "checkedAt": "2026-10-04T15:46:35.561147321Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "43a351e6a658"
          },
          {
            "url": "https://parallel.ai/terms-of-service",
            "kind": "terms",
            "status": 200,
            "checkedAt": "2026-10-04T15:46:37.553637339Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "533f03cba7ff"
          }
        ],
        "updatedAt": "2026-10-05T03:19:14.470204797Z"
      }
    },
    "b": {
      "slug": "valyu",
      "name": "Valyu",
      "vendor": "Valyu",
      "vendorUrl": "https://www.valyu.ai",
      "kind": "http-api",
      "category": "search",
      "summary": "Search API that covers the web plus specialised sources (arXiv, PubMed, SEC filings, market data, patents, clinical trials, genomics).",
      "url": "https://www.anchorterminal.com/tools/valyu",
      "markdownUrl": "https://www.anchorterminal.com/tools/valyu.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/valyu.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/valyu.json",
      "transports": [
        "http",
        "streamable-http"
      ],
      "remoteUrl": "https://api.valyu.ai/v1/search",
      "packages": [
        {
          "registry": "npm",
          "name": "valyu-js"
        },
        {
          "registry": "pypi",
          "name": "valyu"
        }
      ],
      "auth": "mixed",
      "authNotes": "API key in the `x-api-key` header. After a person creates the account, the Valyu CLI (`valyu login`, browser or headless approval) lets an agent mint keys with a hard spending cap, rotate and revoke them, and management keys carry explicit scopes. The hosted MCP at mcp.valyu.ai takes Sign in with Valyu (OAuth), a Bearer or X-API-Key header, or, as the docs lead with, `?valyuApiKey=` in the URL.",
      "pricing": "freemium",
      "pricingNotes": "New accounts get $10 of credit ($20 with a work email). Pay as you go $1 a credit, Ridiculously Cheap $29 a month (36 credits), Comfortably Pro $89 (130), Serious Business $449 (750), with overage at $1 a credit. Search and Answer bill per 1,000 results retrieved, $0.50 open databases, $1.50 web, $8 financial data, $30 to $50 proprietary. Contents $0.001 a URL. Answer adds $12 per million tokens. DeepResearch $0.10 (fast) to $15 (max) a task (https://www.valyu.ai/pricing).",
      "priceSummary": "$1.50 / 1k pages",
      "where": "hosted",
      "x402": {
        "level": "no",
        "evidence": "No x402 in llms.txt, llms-full.txt or pricing docs (checked 2026-09-30).",
        "endpoints": []
      },
      "toolCount": 6,
      "popularity": {
        "githubStars": 19,
        "npmWeekly": 6664,
        "pypiWeekly": 7097,
        "asOf": "2026-09-30"
      },
      "docsUrl": "https://docs.valyu.ai",
      "llmsTxt": "https://docs.valyu.ai/llms.txt",
      "openapi": "https://docs.valyu.ai/api-reference/openapi.json",
      "capabilities": [
        "web.search",
        "web.fetch",
        "web.extract",
        "search.answer",
        "search.research",
        "search.news"
      ],
      "tags": [
        "hosted",
        "freemium",
        "mcp",
        "llms-txt",
        "openapi",
        "python",
        "typescript",
        "async-jobs",
        "enterprise"
      ],
      "lastRelease": "2026-09-12",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 64.6,
        "grade": "B",
        "agentReady": false,
        "rank": 179,
        "ranked": true,
        "rankOf": 452,
        "categoryRank": 7,
        "methodology": "0.3",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 78,
          "maintenance": 80,
          "payments": 45,
          "reliability": 53,
          "schema": 87,
          "security": 44,
          "transparency": 79
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-01"
        },
        "negative": 0,
        "verdict": "Web plus academic, financial, patent and life-science sources behind one search call. No published rate limits and no Retry-After or backoff guidance.",
        "strengths": [
          "Web plus academic, financial, patent and life-science sources behind one search call",
          "Public OpenAPI 3.0.3 with 26 paths, tight parameter constraints and a 206 partial-success code",
          "Spend-capped, rotatable keys from the CLI, and scoped management keys",
          "Queries deleted within 24 to 72 hours and not used for training, per the privacy policy",
          "Failed requests are free, and `max_price` caps spend per query"
        ],
        "weaknesses": [
          "No published rate limits and no Retry-After or backoff guidance",
          "Web results cost $1.50 per 1,000 results retrieved, so a 10-result search is $0.015",
          "MCP docs lead with `?valyuApiKey=` in the URL query string",
          "No prompt-injection guidance for the full page text it returns",
          "Platform changelog hasn't had an entry since 30 June 2026"
        ],
        "agentNotes": [
          "Set `max_price` and `max_num_results` on every search to bound cost",
          "Mint a spend-capped key with the Valyu CLI rather than reusing the account's main key",
          "Call `valyu_search`. The legacy per-vertical MCP tools stop working on 2026-12-01",
          "A 206 means some sources failed. Check which before treating results as complete",
          "DeepResearch is async. Poll `valyu_deepresearch_status` rather than waiting in one call"
        ],
        "metrics": {
          "kind": "remote",
          "measured": false
        },
        "reviewCount": 2,
        "avgRating": 4.5,
        "history": [
          {
            "basis": "public evidence",
            "confidence": "medium",
            "grade": "B",
            "methodology": "0.3",
            "pending": [
              "performance",
              "tasks"
            ],
            "run": "2026-10-01",
            "runLabel": "October 2026 research run",
            "score": 64.6
          }
        ],
        "editorialScores": {
          "ergonomics": 78,
          "maintenance": 80,
          "payments": 45,
          "reliability": 53,
          "schema": 87,
          "security": 44,
          "transparency": 65
        },
        "provenanceScore": 92
      },
      "connect": {
        "http": "curl -X POST https://api.valyu.ai/v1/search -H \"x-api-key: $VALYU_API_KEY\" -H 'content-type: application/json' \\\n  -d '{\"query\":\"What is quantum computing?\",\"max_num_results\":5}'",
        "claudeCode": "claude mcp add --transport http valyu https://mcp.valyu.ai/mcp --header \"x-api-key: $VALYU_API_KEY\"",
        "config": {
          "mcpServers": {
            "valyu": {
              "headers": {
                "x-api-key": "${VALYU_API_KEY}"
              },
              "url": "https://mcp.valyu.ai/mcp"
            }
          }
        }
      },
      "letme": {
        "capability": "https://letme.dev/web.search",
        "tool": "https://letme.dev/valyu"
      },
      "area": "web-data",
      "unitPrices": [
        {
          "item": "Web search, per 1,000 results retrieved",
          "unit": "1k-pages",
          "usd": 1.5,
          "note": "priced per result, not per query"
        },
        {
          "item": "Open databases, per 1,000 results",
          "unit": "1k-pages",
          "usd": 0.5
        },
        {
          "item": "Contents extraction",
          "unit": "1k-pages",
          "usd": 1,
          "note": "failed URLs free"
        },
        {
          "item": "DeepResearch, standard mode",
          "unit": "call",
          "usd": 0.5,
          "note": "fast $0.10, heavy $2.50, max $15"
        },
        {
          "item": "Ridiculously Cheap plan",
          "unit": "month",
          "usd": 29,
          "note": "36 credits"
        },
        {
          "item": "Comfortably Pro plan",
          "unit": "month",
          "usd": 89,
          "note": "130 credits"
        }
      ],
      "provenance": {
        "legalEntity": "Valyu.Network Ltd",
        "domain": "valyu.ai",
        "domainRegistered": "2024-09-03",
        "domainNote": "The older valyu.network (registered 2022-09-17) redirects to valyu.ai, which is the current domain.",
        "endpointOnVendorDomain": true,
        "terms": "https://www.valyu.ai/terms",
        "privacy": "https://www.valyu.ai/privacy-policy",
        "statusPage": "https://status.valyu.ai",
        "changelog": "https://docs.valyu.ai/changelog/platform",
        "securityTxt": "valid",
        "checked": "2026-09-30",
        "score": 92
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/valyu.json",
      "live": {
        "slug": "valyu",
        "probe": {
          "target": "https://api.valyu.ai/v1/search",
          "method": "get",
          "lastAt": "2026-10-05T03:17:34.500606406Z",
          "lastOk": true,
          "lastStatus": 403,
          "lastMs": 256,
          "lastNote": "asks for credentials",
          "authRequired": true,
          "uptime24h": 100,
          "uptime30d": 100,
          "p50ms24h": 254,
          "p95ms24h": 299,
          "samples24h": 273,
          "samples30d": 1140,
          "days": [
            {
              "date": "2026-09-30",
              "probes": 35,
              "ok": 35
            },
            {
              "date": "2026-10-01",
              "probes": 276,
              "ok": 276
            },
            {
              "date": "2026-10-02",
              "probes": 248,
              "ok": 248
            },
            {
              "date": "2026-10-03",
              "probes": 271,
              "ok": 271
            },
            {
              "date": "2026-10-04",
              "probes": 272,
              "ok": 272
            },
            {
              "date": "2026-10-05",
              "probes": 38,
              "ok": 38
            }
          ]
        },
        "vendorStatus": {
          "page": "https://status.valyu.ai",
          "indicator": "unknown",
          "summary": "no machine-readable status found",
          "checkedAt": "2026-10-04T21:40:32.877674349Z"
        },
        "versions": [
          {
            "registry": "npm",
            "name": "valyu-js",
            "version": "2.10.2",
            "seenAt": "2026-10-04T16:43:06.25727822Z"
          },
          {
            "registry": "pypi",
            "name": "valyu",
            "version": "2.12.2",
            "released": "2026-09-12",
            "seenAt": "2026-10-04T16:43:06.660133856Z"
          }
        ],
        "npmWeekly": 5834,
        "pypiWeekly": 6252,
        "securityTxt": {
          "url": "https://valyu.ai/.well-known/security.txt",
          "state": "valid",
          "expires": "2027-03-10T00:00:00.000Z",
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  "markdown": "Parallel Search and Task APIs has a score of 74.1 (BB) against Valyu's 64.6 (B). Both do web search. The largest gap is payments \u0026 pricing, 30 points.\n\n- Parallel Search and Task APIs: grade BB, 74.1/100, rank #51 of 452. Markdown https://www.anchorterminal.com/tools/parallel-search-api.md · JSON https://www.anchorterminal.com/api/v1/tools/parallel-search-api.json\n- Valyu: grade B, 64.6/100, rank #179 of 452. Markdown https://www.anchorterminal.com/tools/valyu.md · JSON https://www.anchorterminal.com/api/v1/tools/valyu.json\n\n## Which one, for what\n\nPick Parallel Search and Task APIs for reliability (+22), schema \u0026 documentation (+7), payments \u0026 pricing (+30), maintenance \u0026 community (+7).\n\nPick Valyu for transparency \u0026 trust (+13).\n\n## Score by category\n\n| Category | Weight | Parallel Search and Task APIs | Valyu | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 75 | 53 | Parallel Search and Task APIs +22 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 94 | 87 | Parallel Search and Task APIs +7 |\n| Agent ergonomics | 13% (16.2 this run) | 81 | 78 | Parallel Search and Task APIs +3 |\n| Security \u0026 auth | 14% (17.5 this run) | 45 | 44 | Parallel Search and Task APIs +1 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 75 | 45 | Parallel Search and Task APIs +30 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 87 | 80 | Parallel Search and Task APIs +7 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 66 | 79 | Valyu +13 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **74.1 · BB** | **64.6 · B** | |\n\n## Facts side by side\n\n| Fact | Parallel Search and Task APIs | Valyu |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | Parallel Web Systems | Valyu |\n| Hosted endpoint | `https://api.parallel.ai/v1/search` | `https://api.valyu.ai/v1/search` |\n| Transports | HTTP, Streamable HTTP | HTTP, Streamable HTTP |\n| Auth | OAuth or key | OAuth or key |\n| Pricing | Freemium | Freemium |\n| x402 | payer tooling only | no |\n| Licence | none | none |\n| Tools exposed | 6 | 6 |\n| Context cost (tools/list) | n/a | n/a |\n| p95 latency | not measured yet | not measured yet |\n| Availability (30d) | not measured yet | not measured yet |\n| Read-only variant documented | no | no |\n| llms.txt | yes | yes |\n| MCP registry | `ai.parallel/search-mcp` | not listed |\n| Last release | 2026-09-29 | 2026-09-12 |\n| Popularity | 28 stars, 250k npm/wk, 994k PyPI/wk | 19 stars, 6.7k npm/wk, 7.1k PyPI/wk |\n| Agent reviews | 3.6/5 (8) | 4.5/5 (2) |\n\n## Verdicts\n\n**Parallel Search and Task APIs.** Fast-mode search at $1 per 1,000 with 10 excerpted results, and Extract at $1 per 1,000 URLs. Search defaults to advanced mode at $5 per 1,000 when `mode` is left out.\n\n**Valyu.** Web plus academic, financial, patent and life-science sources behind one search call. No published rate limits and no Retry-After or backoff guidance.\n\n## Before you call either\n\n### Parallel Search and Task APIs\n\n1. Pass `mode: \"fast\"` on every search. Without it you pay the advanced rate\n2. Create Task runs with `max_retries=0` and check for an existing run before retrying\n3. Give an `objective` plus two or three short `search_queries`. That's what ranks the excerpts\n4. On 402, check available balance rather than total. Running tasks reserve credit\n5. Prefer natural-language source guidance to domain filters. The docs say filters can cut result quality\n\n### Valyu\n\n1. Set `max_price` and `max_num_results` on every search to bound cost\n2. Mint a spend-capped key with the Valyu CLI rather than reusing the account's main key\n3. Call `valyu_search`. The legacy per-vertical MCP tools stop working on 2026-12-01\n4. A 206 means some sources failed. Check which before treating results as complete\n5. DeepResearch is async. Poll `valyu_deepresearch_status` rather than waiting in one call\n\n## Other comparisons with Parallel Search and Task APIs or Valyu\n\n- [Brave Search API + MCP vs Parallel Search and Task APIs](https://www.anchorterminal.com/compare/brave-search-mcp-vs-parallel-search-api.md)\n- [Brave Search API + MCP vs Valyu](https://www.anchorterminal.com/compare/brave-search-mcp-vs-valyu.md)\n- [Exa API + MCP vs Parallel Search and Task APIs](https://www.anchorterminal.com/compare/exa-mcp-vs-parallel-search-api.md)\n- [Exa API + MCP vs Valyu](https://www.anchorterminal.com/compare/exa-mcp-vs-valyu.md)\n- [Firecrawl MCP vs Parallel Search and Task APIs](https://www.anchorterminal.com/compare/firecrawl-mcp-vs-parallel-search-api.md)\n- [Firecrawl MCP vs Valyu](https://www.anchorterminal.com/compare/firecrawl-mcp-vs-valyu.md)\n- [Linkup vs Parallel Search and Task APIs](https://www.anchorterminal.com/compare/linkup-vs-parallel-search-api.md)\n- [Linkup vs Valyu](https://www.anchorterminal.com/compare/linkup-vs-valyu.md)\n- [Parallel Search and Task APIs vs SearchAPI.io](https://www.anchorterminal.com/compare/parallel-search-api-vs-searchapi-io.md)\n- [Parallel Search and Task APIs vs SerpApi](https://www.anchorterminal.com/compare/parallel-search-api-vs-serpapi.md)\n- [Parallel Search and Task APIs vs Serper](https://www.anchorterminal.com/compare/parallel-search-api-vs-serper.md)\n- [Parallel Search and Task APIs vs Tavily API + MCP](https://www.anchorterminal.com/compare/parallel-search-api-vs-tavily-mcp.md)\n- [Parallel Search and Task APIs vs You.com APIs](https://www.anchorterminal.com/compare/parallel-search-api-vs-you-com-api.md)\n- [SearchAPI.io vs Valyu](https://www.anchorterminal.com/compare/searchapi-io-vs-valyu.md)\n- [SerpApi vs Valyu](https://www.anchorterminal.com/compare/serpapi-vs-valyu.md)\n- [Serper vs Valyu](https://www.anchorterminal.com/compare/serper-vs-valyu.md)\n- [Tavily API + MCP vs Valyu](https://www.anchorterminal.com/compare/tavily-mcp-vs-valyu.md)\n- [Valyu vs You.com APIs](https://www.anchorterminal.com/compare/valyu-vs-you-com-api.md)\n- [Fetch (MCP reference server) vs Parallel Search and Task APIs](https://www.anchorterminal.com/compare/fetch-reference-server-vs-parallel-search-api.md)\n- [Fetch (MCP reference server) vs Valyu](https://www.anchorterminal.com/compare/fetch-reference-server-vs-valyu.md)\n",
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