Staxly

Anthropic API vs Insomnia

API for Claude — frontier models for chat, tool use, agents, and long-context reasoning
vs. Open-source API client + design platform — the developer-first Postman alternative

Anthropic website ↗Insomnia website ↗

Pricing tiers

Anthropic API

Opus 4.7 — usage
Input $5 / output $25 / cache-write $6.25 / cache-read $0.50 per 1M tokens. Batch = 50% off.
Custom
Sonnet 4.6 — usage
Input $3 / output $15 / cache-write $3.75 / cache-read $0.30 per 1M tokens. Batch = 50% off.
Custom
Haiku 4.5 — usage
Input $1 / output $5 / cache-write $1.25 / cache-read $0.10 per 1M tokens. Batch = 50% off.
Custom
Anthropic website ↗

Insomnia

Free
$0. Unlimited local. Cloud sync with E2EE. 1 project. Local + Git storage. Up to 3 members.
Free
Pro
$5/user/mo annual. Unlimited projects, cloud sync + Git sync + Insomnia AI.
$5/mo
Enterprise
$25/user/mo. SSO, SAML, RBAC, audit log, dedicated SLA, VPC.
$25/mo
Insomnia website ↗

Free-tier quotas head-to-head

Comparing opus-4-7 on Anthropic API vs free on Insomnia.

MetricAnthropic APIInsomnia
discount batch50 % off—

Features

Anthropic API · 0 features

    Insomnia · 19 features

    • API Design (OpenAPI) — Spec editor + preview.
    • Auth Helpers — OAuth, AWS, Hawk, Bearer, etc.
    • Cloud Sync (E2EE) — Opt-in encrypted sync.
    • Environments — Variables per env.
    • Git Sync — Version with your repo.
    • GraphQL — Query + schema explorer.
    • gRPC — gRPC client.
    • HTTP Client — REST request builder.
    • inso CLI — Run API tests + lint specs in CI.
    • Insomnia AI — AI-assisted request building.
    • Local-First Storage — No account required.
    • Mock Server — Build mocks from OpenAPI (Pro).
    • Plugins — Extend via Node.js.
    • Request Collections — Grouped requests.
    • Scratch Pad — Local-only mode (re-added after backlash).
    • SOAP — WSDL + SOAP.
    • Teams — Shared workspaces.
    • Templating Engine — Nunjucks + JS snippets.
    • WebSockets — WS connection + messages.

    Developer interfaces

    KindAnthropic APIInsomnia
    CLIClaude Code CLIinso CLI
    SDKGo SDK, Java SDK, Python SDK, Ruby SDK, TypeScript SDK (@anthropic-ai/sdk)Plugin API
    RESTAWS Bedrock, Google Vertex AI, Microsoft Azure AI, REST API (Messages + Agents)Insomnia Cloud API
    OTHER—Git Sync (built-in), Insomnia Desktop
    Staxly is an independent catalog of developer platforms. Some links to Anthropic API and Insomnia may be affiliate links — Staxly may earn a commission if you sign up through them, at no extra cost to you. Pricing is verified against vendor pages at publication time — reconfirm before buying.

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