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Llmspeed
Llmspeed is a hardware performance simulator that tests local large language model speed before purchase.
Llmspeed is a performance simulation tool designed to help users evaluate local large language model speeds before buying hardware. The platform simulates tokens per second and time-to-first-token metrics for short prompts on single devices. Users browse hardware options including NVIDIA GPUs, AMD processors, Apple Mac systems, and cloud configurations, alongside various models such as Llama, Qwen, Gemma, DeepSeek, and GPT-OSS. Estimates rely on measured numbers from community benchmarks like r/LocalLLaMA and localscore.ai, while others derive from similar setups or spec projections. The project is open source on GitHub.
Llmspeed at a glance
- Best for: Software engineer, Product manager
- Runs on: Web, open source
- Pricing: Free
- Released: August 2026
- Category: AI productivity tool
- Website: llmspeed.dev
Key features
- Simulate tokens per second for local models
- Calculate time-to-first-token estimates
- Browse performance by specific hardware
- Compare speeds across various language models
- Access data from community benchmarks
- View projections based on hardware specifications
Use it for
- Comparing local hardware speed before buying a GPU or Mac
- Estimating token generation rates for specific open source models
- Checking performance metrics across different community benchmarks
Alternatives to Llmspeed
- TokenSpeed — Optimized performance for agentic workloads and high-throughput LLM serving.
- llmrun — Check which open models run on your specific GPU or Mac instantly.
- AirLLM — Runs massive 70B+ parameter models on small 4GB consumer GPUs.
- llmfit — Auto-detects hardware to recommend and score compatible open-source LLMs.
- LLM Stats — Independent rankings updated continuously from live API metrics.
- whichllm — Ranks models using real benchmarks and hardware fit instead of parameter count.
- vLLM — Maximizes throughput with PagedAttention and continuous batching.
- LightLLM — It delivers high-speed inference and serving performance for large language models.
- Langfa.st — Compare model responses side-by-side to validate prompts before deployment.
- SpeechFast — Dictate anywhere on Mac with 100 percent local processing and no cloud servers.
- Dragomand — Provides shared, offline machine translation for any Linux application.
- RigCheck — Calculates exact model memory limits and file requirements based on developer specifications.
All Llmspeed alternatives