Isoquant

Inference API for open models (GLM-5.3-Flash, DeepSeek V4.1 Flash) — keep your code, swap the base URL, get automatic prompt caching and no top-up fees.

Paid Coding & Development
Visit Website ↗ by Isoquant

What is Isoquant?

Isoquant is an inference API for open models such as GLM-5.3-Flash and DeepSeek V4.1 Flash, built on GPU engineering and performance optimisation across the inference stack.

You keep your code and just change the endpoint, with automatic prompt caching, no top-up fees, and the company's own benchmark reporting 452 ms median time to first token.

Key features

  • Inference API for open models including GLM-5.3-Flash and DeepSeek V4.1 Flash
  • Keep your code, change the endpoint — add an Isoquant key and update the base URL
  • Automatic prompt caching with no top-up fees
  • 452 ms P50 time to first token and 158.9 tok/s P50 throughput on the company's GLM-5.3-Flash benchmark
  • Architecture-aware optimisation — execution tuned to each model's architecture with mixed precision
  • GPU performance engineering — kernel and memory optimisation
  • Accelerated decoding via speculative decoding and decode optimisation
  • Workload-aware orchestration — KV cache and load balancing for long context and concurrent traffic
  • Self-optimising inference for companies — connect, evaluate and improve, then deploy the winning model

Pros

  • Drop-in swap — keep your code, change the base URL
  • No top-up fees and automatic prompt caching
  • Reports 452 ms P50 time to first token on its own GLM-5.3-Flash benchmark
  • Model customisation for companies, tuned around quality, latency and cost

Cons

  • Latency and throughput figures are the company's own benchmarks, not independent measurements
  • No free tier is mentioned on the official site
  • Catalogue centres on open models rather than closed frontier models

Isoquant at a glance

PricingPaid
CategoryCoding & Development
Platformsweb
CompanyIsoquant
Best forDevelopers running open-model inference who want low latency and a drop-in API
Official websiteisoquant.ai
inferencellm apiopen modelslatencyprompt caching

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Isoquant FAQs

What is Isoquant?

Isoquant is an inference API for open models such as GLM-5.3-Flash and DeepSeek V4.1 Flash, built on GPU engineering and performance optimisation across the inference stack.

What are the main features of Isoquant?

Isoquant offers Inference API for open models including GLM-5.3-Flash and DeepSeek V4.1 Flash, Keep your code, change the endpoint — add an Isoquant key and update the base URL, Automatic prompt caching with no top-up fees, 452 ms P50 time to first token and 158.9 tok/s P50 throughput on the company's GLM-5.3-Flash benchmark, Architecture-aware optimisation — execution tuned to each model's architecture with mixed precision, GPU performance engineering — kernel and memory optimisation, Accelerated decoding via speculative decoding and decode optimisation, Workload-aware orchestration — KV cache and load balancing for long context and concurrent traffic and Self-optimising inference for companies — connect, evaluate and improve, then deploy the winning model.

How much does Isoquant cost?

Isoquant is a paid product. Prices and plans change over time, so check its official website for the current pricing before you buy.

What are the pros and cons of Isoquant?

Strengths of Isoquant include Drop-in swap — keep your code, change the base URL; No top-up fees and automatic prompt caching; Reports 452 ms P50 time to first token on its own GLM-5.3-Flash benchmark. On the downside, Latency and throughput figures are the company's own benchmarks, not independent measurements; No free tier is mentioned on the official site; Catalogue centres on open models rather than closed frontier models.