Revision History

Refresh DeepSeek peak-pricing as-of date to Aug 5 (re-verified on the pricing page) and add Bloomberg's Aug 4 cost-per-task comparison

Correction: Qwen-Plus bills chain-of-thought output separately at $4.00 and $12.00 per 1M by context band, so the listed output rate understated the cost of a reasoning-mode request

Correction: Amazon Nova Micro and Nova Pro rates did not match AWS's published pricing, a superlative labelled an input rate as blended, and the claim that DeepSeek V4-Pro cost more to evaluate because it emitted more tokens is contradicted by Artificial Analysis, which records fewer; also corrects the fast-mode multiplier for gpt-5.5, two cache-discount figures, and the description of Simon Willison's test prompt

Full re-verification of every price against provider pricing pages on August 1, 2026, with an explicit prices-as-of date. Adds the July 30 GPT-5.6 Luna (-80%) and Terra (-20%) cuts and the Fast mode rename, plus Claude Opus 5 / Sonnet 5 / Fable 5, Gemini 3.6 Flash, Grok 4.5, Kimi K3, GLM, and hosted open-weights rates; corrects Qwen3-Max and Grok 4.3; adds sections on cost per task vs per-token rates, cache economics, long-context surcharges, service tiers, and why DeepSeek peak pricing is not in force.

Added 6 contextual internal links

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