---
id: provider-cache-hit-rate/2026-05
series: provider-cache-hit-rate
title: Prompt cache hit rate by provider, May 2026
period: 2026-05
period_start: 2026-05-01
period_end: 2026-05-31
updated: 2026-11-11
license: CC BY 4.0
canonical: https://www.requesty.ai/data/provider-cache-hit-rate/2026-05
latest: https://www.requesty.ai/data/provider-cache-hit-rate
---

# Prompt cache hit rate by provider, May 2026

> DeepSeek served 83.8% of input tokens from cache in May 2026, the highest among major providers. The median major provider served 40.9%.

Question: What share of input tokens do LLM providers serve from prompt cache?

## Key findings

1. DeepSeek leads at 83.8%; Novita is lowest at 5.3%.
2. 2 of 10 major providers served at least 80% of input tokens from cache.

## Data

| Provider | Cache hit rate | Traffic share | Organizations (band) |
| --- | --- | --- | --- |
| DeepSeek | 83.82% | 3.94% | 100-499 |
| Anthropic | 80.60% | 24.47% | 500+ |
| Azure | 67.72% | 3.60% | 100-499 |
| Vertex (Claude) | 49.09% | 1.10% | 100-499 |
| Bedrock | 45.72% | 4.81% | 100-499 |
| OpenAI | 36.01% | 31.34% | 500+ |
| xAI | 32.39% | 1.98% | 100-499 |
| Vertex (Gemini) | 19.42% | 22.10% | 500+ |
| DeepInfra | 12.63% | 0.54% | 25-99 |
| Novita | 5.26% | 4.06% | 100-499 |

## Method

- Cache hit rate is cached input tokens divided by input tokens, the same definition /rankings uses.
- Providers that report no cached tokens are left out of the chart. Only providers with at least 0.5% of published traffic are shown.
- A row is published only when it has at least 20 requests, at least 5 distinct organizations, and no single organization above 80% of its traffic. These are the same floors /rankings uses. Rows below the floors are withheld, not estimated.
- Only shares, rates, medians and organization bands are published. Absolute request, token and spend totals stay private.

## Caveats

- Hit rate depends on workload. Long agent sessions with a stable prefix cache far better than one-off requests.
- Providers report cached tokens differently. Some only count explicit cache reads.

## Cite as

Requesty (2026). Prompt cache hit rate by provider, May 2026. Requesty Data. https://www.requesty.ai/data/provider-cache-hit-rate/2026-05

```bibtex
@misc{requesty_provider_cache_hit_rate_2026_05,
  author       = {{Requesty}},
  title        = {Prompt cache hit rate by provider, May 2026},
  year         = {2026},
  howpublished = {\url{https://www.requesty.ai/data/provider-cache-hit-rate/2026-05}},
  note         = {Requesty Data}
}
```

Source: Requesty production gateway. License: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/).
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