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Cost-modelling — AI news & analysis
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Every Pick Right story tagged cost-modelling — 7 articles, newest first. All news →
Cursor's $20 plan is gone — and the models most Cursor users run left the usage pool
On 12 October 2026 SpaceXAI merged Grok, Cursor and X Premium into one five-tier ladder: Free, Plus $8, Premium $30, Super $100, Ultra $200. Cursor Pro at $20 is closed to new signups. The headline is a price cut, but the shared usage pool now covers Grok models only — Claude and GPT in the Cursor editor moved to pass-through API billing on Premium and above. For a developer whose daily driver is Sonnet, a flat $20 bill becomes $30 plus metered tokens.
Read story →OpenAI's fastest tier reached Europe on 8 October — on every model except the flagship
On 8 October 2026 OpenAI shipped Ultrafast for GPT-6.1 Sol at $12/$60 per million tokens, six times standard, and became the first OpenAI speed tier purchasable under EU data residency. GPT-6 Astra's Ultrafast remains global-and-US-only at $60/$300. For a European buyer that turns latency from a price decision into a model decision: you can buy speed, but only on the model one point below the flagship.
Read story →Claude Haiku 5.5 is a tenth of Haiku 4.5's price — until your prompt passes 100,000 tokens, where it costs five times more
On 7 October 2026 Anthropic launched Claude Haiku 5.5 at $0.10/$0.50 per million tokens and cut Sonnet 5.5's cache read from $0.20 to $0.10. Haiku 5.5 is the first Claude model priced by prompt length: above 100,000 tokens every rate multiplies by five — the steepest long-prompt surcharge any major vendor charges, at the lowest threshold. Because the cliff is measured in Anthropic's newer tokenizer, it arrives at about 77,000 Haiku-4.5-equivalent tokens.
Read story →Microsoft bought the transcription accuracy crown at 3x the price floor — and the price expires in 89 days
On 1 October 2026 Microsoft AI shipped MAI-Transcribe-2-Streaming, its first streaming speech-to-text model, and claims the no. 1 accuracy rank on Artificial Analysis for both final and partial transcripts. It costs $0.54 per audio-hour — three times Meta's $0.18 streaming rate — and that $0.54 is explicitly an introductory price 'through the end of the year', with no successor rate published. The two voice models launched alongside it are the more interesting purchase — though not the cheapest, as first reported.
Read story →Claude Sonnet 4.5 has 61 days to live, and the replacement Anthropic names is 13% cheaper — not 33%
On 30 September 2026 Anthropic deprecated claude-sonnet-4-5-20250929 with retirement set for 30 November — 61 days, one day over the 60-day minimum its own policy promises, and the fifth consecutive deprecation to land within two days of that floor. The recommended replacement drops the list price from $3/$15 to $2/$10, but Sonnet 5.5 runs a tokenizer that produces about 30% more tokens for the same text. Net effective saving: about 13%.
Read story →ChatGPT's new $500 tier did not raise any price — it deleted the only volume discount OpenAI sold
At DevDay on 29 September 2026 OpenAI launched ChatGPT Pro 500 at $500 a month with 25x the Plus allowance, reopened Pro 200, and halved Pro 200's included usage from 20x to 10x effective 30 October. Run the division: every plan in the lineup now costs exactly $20 per unit of Plus allowance. The old Pro 200 was the single exception at $10, and it is the thing that was discontinued.
Read story →GPT-6.1 Sol and Claude Sonnet 5.5 both cost $2/$10, land a day apart, and bill an order of magnitude differently
OpenAI shipped GPT-6.1 Sol at DevDay on 29 September 2026 at $2 per million input tokens and $10 per million output — the same list price Anthropic set for Claude Sonnet 5.5 the day before. The identical headline hides a 2x gap in cache reads, a 272K-token surcharge cliff on one side and none on the other, and independent per-task costs that differ by more than 10x. The rate card has stopped being the number that decides the bill.
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