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OpenAI & Anthropic API Usage Tier & Rate-Limit Lookup

Hit a 429 and not sure why? Enter what you've spent and this shows which OpenAI or Anthropic usage tier you're in, the RPM/TPM it gives your model, and exactly how much more to spend — or how long to wait — to reach the next tier. No signup, no API key, sources cited.

By Induwara AshinsanaUpdated Jul 10, 2026
LLM API tier & rate-limit lookup
Snapshot · 2026-07-10
$

Total ever paid to OpenAI — advancement uses cumulative spend, not current balance.

OpenAI also gates tier upgrades on account age since your first payment.

Your current tier
Tier 2
Monthly spend cap
$500
To reach Tier 3
$40 more
TPM binds above
90 tok/req
Below that, RPM binds first

Full tier ladder — GPT-4o

TierSpendMin ageMonthly capRPMTPM
Free$0$100
Tier 1$5$10050030,000
Tier 2$507d$5005,000450,000
Tier 3$1007d$1,0005,000800,000
Tier 4$25014d$5,00010,0002,000,000
Tier 5$1,00030d$200,00010,00030,000,000

RPM across tiers — GPT-4o

Free
Tier 1
500
Tier 2
5,000
Tier 3
5,000
Tier 4
10,000
Tier 5
10,000

Bars use a log scale so lower tiers stay visible. Values are RPM (requests per minute) for the selected model.

Rate-limit numbers are a dated snapshot (2026-07-10) from the OpenAI and Anthropic rate-limit docs. Providers change limits by model version and region — confirm against your live dashboard before relying on a number.

How it works

Both OpenAI and Anthropic gate their API rate limits behind a ladder of usage tiers. You climb the ladder by paying: each tier has a cumulative spend (or deposit) threshold, and reaching it raises your monthly spend cap and your per-model requests-per-minute (RPM) and tokens-per-minute (TPM) limits. This tool is a deterministic lookup over the documented ladders and a dated rate-limit snapshot — nothing is estimated or fudged.

OpenAI tiers use two gates, and both must be met. A tier is reached only when your cumulative paid spend clears its threshold andenough days have passed since your first payment. The documented thresholds are Tier 1 at $5 (0 days), Tier 2 at $50 (7 days), Tier 3 at $100 (7 days), Tier 4 at $250 (14 days), and Tier 5 at $1,000 (30 days). Formally, your tier is the highest T where spend ≥ threshold[T] and days ≥ minAge[T]. Because both gates rise together, this is why a well-funded but new account can be stuck: you can clear every money threshold and still sit on Tier 1 until the age gate passes.

Anthropic uses a single gate that unlocks immediately.Your tier is the highest one whose cumulative deposit you've met — Tier 1 at $5, Tier 2 at $40, Tier 3 at $200, Tier 4 at $400 — with no waiting period. Deposit past a threshold and the higher limits apply right away.

For the gap to your next tier, the tool computes spendGap = max(0, threshold[next] − spend) and, for OpenAI, dayGap = max(0, minAge[next] − days). The next tier arrives only when both are zero. In “What do I need?” mode it works backwards instead: it scans tiers upward and returns the lowest one whose RPM and token limits meet the numbers you enter, then tells you the spend (and age) to get there. To flag which limit throttles you, it reports a crossover — TPM ÷ RPM — the average tokens-per-request at which the token limit and the RPM limit run out at the same moment. Two independent scans (descending and ascending) resolve the tier and must agree, which is how the numbers stay auditable.

Worked examples

OpenAI · GPT-4o · spent $60, 10 days in

  1. Check tiers top-down against both gates.
  2. Tier 3 needs $100 — $60 < $100, fails.
  3. Tier 2 needs $50 and 7 days — $60 ≥ $50 ✓ and 10 ≥ 7 ✓ → Tier 2.
  4. Tier 2 gives GPT-4o 5,000 RPM / 450,000 TPM; monthly cap $500.
  5. Next tier (Tier 3) needs $100 → spend gap = $100 − $60 = $40 more.
  6. Age already ≥ 7 days, so no wait. Result: Tier 2, spend $40 more for Tier 3.

OpenAI · GPT-4o · spent $200, only 5 days in (age gate binds)

  1. $200 clears the Tier 2 ($50) and Tier 3 ($100) money thresholds.
  2. But every tier above 1 needs 7+ days, and the account is 5 days old.
  3. Tier 3: 5 < 7 fails. Tier 2: 5 < 7 fails. Tier 1: $200 ≥ $5, 5 ≥ 0 → Tier 1.
  4. So you're on Tier 1 (500 RPM / 30,000 TPM) despite paying plenty.
  5. Money-qualified tier ignoring age = Tier 3; it unlocks on day 7 → in 2 days.
  6. Result: adding more credit won't help — the fix is to wait 2 days.

Anthropic · Claude Sonnet · deposited $50

  1. Anthropic has one gate: cumulative deposit, no waiting period.
  2. Tier 4 needs $400 — fails. Tier 3 needs $200 — fails.
  3. Tier 2 needs $40 — $50 ≥ $40 ✓ → Tier 2; monthly cap $500.
  4. Tier 2 Sonnet limits: 1,000 RPM / 450,000 ITPM / 90,000 OTPM.
  5. Next tier (Tier 3, 2,000 RPM) needs $200 → deposit gap = $200 − $50 = $150.
  6. Result: Tier 2 now; deposit $150 more to jump to Tier 3 instantly.

Frequently asked questions

Sources & references

Tier thresholds, account-age gates, monthly caps, and per-model rate limits were last cross-checked against these sources on 2026-07-10. Each rate-limit number is a dated snapshot; providers change limits by model version and region, so confirm against your live dashboard before relying on one. This tool never reads your account — it computes from the figures you enter.

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Comments & feedback

Spotted a bug or want an improvement? Tell us — our team reviews every comment, and good ideas get built. Comments are public and anonymous.

Spotted a tier threshold or rate limit that's changed?

Email me at [email protected] — I update the snapshot fast.