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synthorai.ai Unified LLM Infra

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Which LLM Is Cheapest for Your Language? Tokenizer Costs Measured

Which LLM Is Cheapest for Your Language? Tokenizer Costs Measured

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13 min read
Claude Fable 5 for Agents: Tool-Call Refusals, Cost vs GLM 5.2

Claude Fable 5 for Agents: Tool-Call Refusals, Cost vs GLM 5.2

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9 min read
LLM Prompt Caching #5: LangChain Setups That Actually Hit

LLM Prompt Caching #5: LangChain Setups That Actually Hit

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10 min read
Claude Sonnet 5's New Tokenizer: 41% More Tokens per Prompt

Claude Sonnet 5's New Tokenizer: 41% More Tokens per Prompt

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8 min read
GLM 5.2 Tool Calls in Agent Loops: What 'OpenAI-Compatible' Hides

GLM 5.2 Tool Calls in Agent Loops: What 'OpenAI-Compatible' Hides

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7 min read
What a Simple Transcription Test Can and Can't Tell You

What a Simple Transcription Test Can and Can't Tell You

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9 min read
GLM 5.2: Reasoning Effort Is the Cost Lever

GLM 5.2: Reasoning Effort Is the Cost Lever

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8 min read
What Actually Drives Your Image-Generation Bill

What Actually Drives Your Image-Generation Bill

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8 min read
Prompt Caching for Open-Weight LLMs: Provider Roulette

Prompt Caching for Open-Weight LLMs: Provider Roulette

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14 min read
Claude Fable 5's 30-Day Retention: ZDR, HIPAA, COPPA

Claude Fable 5's 30-Day Retention: ZDR, HIPAA, COPPA

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12 min read
Claude Fable 5: Caching, Tokenizer & Cost vs Opus 4.6

Claude Fable 5: Caching, Tokenizer & Cost vs Opus 4.6

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7 min read
Provider Drift: How Default Routing Inflates LLM Cost 3.9 — A Measurement

Provider Drift: How Default Routing Inflates LLM Cost 3.9 — A Measurement

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5 min read
Does Your LLM Gateway Lie About Cache? A 5-Min Audit

Does Your LLM Gateway Lie About Cache? A 5-Min Audit

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8 min read
Claude Opus 4.8 on Synthorai: Caching & TTL vs 4.7/4.6

Claude Opus 4.8 on Synthorai: Caching & TTL vs 4.7/4.6

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7 min read
LLM Prompt Caching: The Complete 2026 Guide

LLM Prompt Caching: The Complete 2026 Guide

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5 min read
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