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Model Watch: new AI models and what they cost
New models now arrive almost every week. Here is each new chat and coding model since September 2026, newest first, with the date its maker released it and its price per million tokens. Our Model Watch posts look closer at the biggest launches: what they cost in practice, how to get them and how developers reacted.
Checked October 18, 2026 against each maker’s release notes
Latest posts
Launch timeline
Each launch on its release date; the label gives the price per 1M tokens, input / output. Pick a maker to show only its launches here and in the table.
New models since September 2026
| Released | Model | Maker | Input / output | Note |
|---|---|---|---|---|
| DeepSeek V4.1 Flash update (1017) | DeepSeek | $0.30 / $1.20 | Same name and prices, upgraded model; also in DeepSeek’s app | |
| Gemini 4 Argon | $2.00 / $10.00 | Introductory price until December 1, 2026, then double | ||
| Claude Haiku 5.5 | Anthropic | $0.10 / $0.50 | ||
| GPT-6.1 Sol | OpenAI | $2.00 / $10.00 | ||
| Claude Sonnet 5.5 | Anthropic | $2.00 / $10.00 | ||
| Claude Opus 5.5 | Anthropic | $4.00 / $20.00 | ||
| GPT-6 Luna | OpenAI | $0.10 / $0.50 | Released with GPT-6 Sol, which GPT-6.1 Sol followed a week later | |
| Grok 4.7 | xAI | $2.00 / $6.00 | ||
| DeepSeek V4.1 Flash | DeepSeek | $0.30 / $1.20 | Half price outside peak hours | |
| GPT-6 Astra | OpenAI | $10.00 / $50.00 | ||
| Gemini 3.8 Flash | $0.75 / $3.75 | Price doubles on January 1, 2027 | ||
| Claude Fable 5.1 | Anthropic | $10.00 / $50.00 |
All dates are in 2026 and are the makers’ API release dates; some models reached their chat apps a day or so later. Image, voice and music models, and models open only to vetted organizations, are not listed. DeepSeek’s prices are its peak-hour rates. For announced price rises and ended promotions, see price changes.
How we pick and check
A model goes on this list when its maker releases it on its API, and gets a post when it changes what you would choose or pay: a new top model, a big price cut or a cheaper model that catches up. Every price comes from the maker’s own pricing page, and every release date from its release notes, listed below. When we quote what people say, we link the discussion and summarize it in our own words.