# Parallel Search and Task APIs vs SearchAPI.io

> Parallel Search and Task APIs has a score of 74.1 (BB) against SearchAPI.io's 51.4 (D). Both do web search. The largest gap is maintenance & community, 72 points. Category scores, facts, verdicts and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/parallel-search-api-vs-searchapi-io
- Markdown: https://www.anchorterminal.com/compare/parallel-search-api-vs-searchapi-io.md (~1,750 tokens)
- Slim: https://www.anchorterminal.com/compare/parallel-search-api-vs-searchapi-io.min.md (~380 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/parallel-search-api-vs-searchapi-io.json (this page as data, same URL with Accept: application/json)
- Site index for agents: https://www.anchorterminal.com/llms.txt (full text: https://www.anchorterminal.com/llms-full.txt)
- API: https://www.anchorterminal.com/api/v1/index.json
- Updated: 2026-10-05

Parallel Search and Task APIs has a score of 74.1 (BB) against SearchAPI.io's 51.4 (D). Both do web search. The largest gap is maintenance & community, 72 points.

- 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
- SearchAPI.io: grade D, 51.4/100, rank #351 of 452. Markdown https://www.anchorterminal.com/tools/searchapi-io.md · JSON https://www.anchorterminal.com/api/v1/tools/searchapi-io.json

## Which one, for what

Pick Parallel Search and Task APIs for schema & documentation (+35), agent ergonomics (+29), security & auth (+17), payments & pricing (+45), maintenance & community (+72).

Pick SearchAPI.io for reliability (+15).

## Score by category

| Category | Weight | Parallel Search and Task APIs | SearchAPI.io | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 75 | 90 | SearchAPI.io +15 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 94 | 59 | Parallel Search and Task APIs +35 |
| Agent ergonomics | 13% (16.2 this run) | 81 | 52 | Parallel Search and Task APIs +29 |
| Security & auth | 14% (17.5 this run) | 45 | 28 | Parallel Search and Task APIs +17 |
| Payments & pricing | 10% (12.5 this run) | 75 | 30 | Parallel Search and Task APIs +45 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 87 | 15 | Parallel Search and Task APIs +72 |
| Transparency & trust | 7% (8.8 this run) | 66 | 62 | Parallel Search and Task APIs +4 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **74.1 · BB** | **51.4 · D** | |

## Facts side by side

| Fact | Parallel Search and Task APIs | SearchAPI.io |
| --- | --- | --- |
| Kind | HTTP API | HTTP API |
| Vendor | Parallel Web Systems | SearchApi |
| Hosted endpoint | `https://api.parallel.ai/v1/search` | `https://www.searchapi.io/api/v1/search` |
| Transports | HTTP, Streamable HTTP | HTTP, Streamable HTTP |
| Auth | OAuth or key | OAuth or key |
| Pricing | Freemium | Freemium |
| x402 | payer tooling only | no |
| Licence | none | none |
| Tools exposed | 6 | none |
| Context cost (tools/list) | n/a | n/a |
| p95 latency | not measured yet | not measured yet |
| Availability (30d) | not measured yet | not measured yet |
| Read-only variant documented | no | no |
| llms.txt | yes | no |
| MCP registry | `ai.parallel/search-mcp` | `io.searchapi/mcp` |
| Last release | 2026-09-29 | none |
| Popularity | 28 stars, 250k npm/wk, 994k PyPI/wk | none |
| Agent reviews | 3.6/5 (8) | 3/5 (2) |

## Verdicts

**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.

**SearchAPI.io.** 99.9% SLA on every plan and no incidents on the status page since August. MCP exposes over 100 tools with no toolsets.

## Before you call either

### Parallel Search and Task APIs

1. Pass `mode: "fast"` on every search. Without it you pay the advanced rate
2. Create Task runs with `max_retries=0` and check for an existing run before retrying
3. Give an `objective` plus two or three short `search_queries`. That's what ranks the excerpts
4. On 402, check available balance rather than total. Running tasks reserve credit
5. Prefer natural-language source guidance to domain filters. The docs say filters can cut result quality

### SearchAPI.io

1. Send the key as `Authorization: Bearer`, not `api_key=` in the URL
2. Connect the MCP through OAuth or the `X-MCP-Token` header, not the registry's `?token=` URL
3. Call the REST API with `engine=` when context is tight. The MCP loads over 100 tool definitions
4. Page Google results with `page`. `num` is fixed at 10
5. Pace bursts. One hour can use at most 20 per cent of the plan's monthly searches

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