Microsoft Copilot · Rate Limits

Microsoft Copilot Rate Limits

Microsoft Copilot rate limits depend on the surface. Microsoft 365 Copilot has per-user fair-use throttling (not publicly published as per-second numbers; soft limits in the high tens of requests per minute per user). Copilot APIs accessed through Microsoft Graph apply Microsoft Graph throttling (per-app, per-tenant, and per-user). Copilot Studio applies per-message metering (counts toward the purchased message pack). GitHub Copilot has per-user request quotas and Copilot Chat conversation pacing. All surfaces use HTTP 429 with Retry-After.

Microsoft Copilot Rate Limits is the machine-readable rate-limit profile for Microsoft Copilot on the APIs.io network, in the API Commons Rate Limits shape.

It captures 5 rate-limit definitions, measuring requests_per_10s, requests_per_minute, and messages_per_month.

Limit state is signalled in the retryAfter, rateLimitLimit, rateLimitRemaining, and rateLimitReset response headers, and an exhausted limit returns HTTP 429.

This profile was written by API Evangelist and has not been verified against a page the provider published; treat every limit as unconfirmed until a dated transcription replaces it.

The profile also includes 5 backoff/retry policies defined and response codes documented for throttled and serviceUnavailable.

Tagged areas include Agents, AI Assistant, Artificial Intelligence, Chatbot, and Copilot.

5 Limits Exhausted: HTTP 429 retryAfterrateLimitLimitrateLimitRemainingrateLimitReset
Method: generated, dated 2026-05-05.
Written by API Evangelist on 2026-05-05 and not verified against a page the provider published. Treat every limit as unconfirmed until a dated transcription replaces it.
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AgentsAI AssistantArtificial IntelligenceChatbotCopilotExtensibilityGenerative AIRate Limiting

Limits

Microsoft Graph — per-app per-tenant app/tenant
requests_per_10s · second
130000
130,000 requests per 10 seconds per app per tenant for general Graph endpoints. Many service-specific limits override (Outlook, OneDrive, etc.).
Microsoft Graph — per-user user
requests_per_10s · second
10000
10,000 requests per 10 seconds per user across all apps. Soft limit subject to change.
Microsoft 365 Copilot — fair-use per user user
requests_per_minute
see vendor docs (soft fair-use)
Per-user fair-use throttling on Copilot prompts; not publicly documented as per-second numbers. Excessive prompting yields 429 with Retry-After.
Copilot Studio — message metering tenant
messages_per_month · month
25000
Standard message pack is 25,000 messages/month. Excess billed PAYG at $0.01/message. Generative messages count as 2; classifier as 1.
GitHub Copilot — chat requests user
requests_per_minute
see vendor docs
Per-user throttling on Copilot Chat; specific numbers not published. Code completion uses streaming and is tuned per-IDE.

Policies

Honor Retry-After
All Copilot surfaces return 429 with Retry-After. Implement exponential backoff with jitter; SDKs auto-retry.
Microsoft Graph backoff
Microsoft Graph documents service-specific throttling and recommends batching via /v1.0/$batch (max 20 per batch) plus delta queries for large reads.
Per-message accounting
Copilot Studio monthly message packs are not pooled across tenants. Unused messages don't roll over. Excess goes to PAYG.
Tenant fair-use
Sustained extreme load on Microsoft 365 Copilot can trigger tenant-level throttling and slowdown across users. Rare but documented.
Customer-managed key impact
Tenants using Customer Lockbox / CMK may see slightly lower throughput due to additional cryptographic operations.

Sources

Work with this as data

Every rate limit here is available over the APIs.io API and to AI agents over MCP.

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Tools for rate limits

4 MCP tools reach this
  • find_rate_limitsBrowse and filter every rate limit in the catalog.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
All 92 tools →

Call it yourself

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This rate limit 
curl "https://apis.io/api/v1/rate-limits/microsoft-copilot-rate-limits"
All rate limits 
curl "https://apis.io/api/v1/rate-limits?limit=25"

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