GPT-6.1 Terra is live in the API, ChatGPT Work, Codex and Copilot: 1.05M context, half GPT-6.1 Sol's price, and OpenAI's own benchmark and safety numbers.
Anthropic released Claude Haiku 5.5 on 7 October at $0.10 input and $0.50 output per million tokens for prompts up to 100K, a tenth of Haiku 4.5's price. Sonnet 5.5 cache reads fall from $0.20 to $0.10.
The 6 October changelog releases the Decisions API in beta on gpt-6-luna. The guide calls it a public beta, prices input at $0.10 per million tokens, and lists no output charge.
NaiveAI’s Naive-N0.5-Flash (Sep 27, 2026): open-weight 309B MoE / 15.5B active, native 1M hybrid SWA–DSA, MIT on HF. API ($0.10/$0.40/$0.01) and NaiveRT remain future-tense—NaiveRT GitHub still 404 at the time of writing (promised by Oct 12). Benches/tok/s are NaiveAI harness claims only.
Google DeepMind announced Gemini 4 Argon on 2026-09-30: phased to Fairwind cyber defenders first, 1M output tokens (not full context), intro $2/$10 then $4/$20 per 1M tokens on the blog—no public model ID or ai.google.dev pricing row yet.
As of 30 September 2026, GPT-6.1 Sol offers a 1.05-million-token context window and lower standard token prices. OpenAI says Sol Ultrafast access is coming soon.
Anthropic released Claude Sonnet 5.5 on 2026-09-28 at $2/$10 per million input/output tokens, unchanged from Sonnet 5. Its published benchmark table puts it near Opus 5.5 on several tasks, while its migration guide lists breaking changes for Sonnet 5 users.
Anthropic's new Opus lists at $4/$20 per million tokens with $0.20 cache reads, and early users call it the best Opus in a year. It also breaks Opus 5 code in four places and trips its security classifier on ordinary work.
Alibaba's Qwen team upgraded its ASR, TTS and Realtime voice models and added TTS-Next and ASR-Next, while a Model Studio notice cut realtime voice rates by up to about 88% from September 22.
Google launched Gemini 3.8 Flash TTS and Flash-Lite TTS on 2026-09-23 — promptable voice design, 2,000+ voices, and consent-gated replication. Pricing from ai.google.dev: Flash $0.50/$9 and Lite $0.50/$6 through 2026-12-31.
ZeroDrift launched Anchor 3.0 GA on 2026-09-23 — mini, flagship, and max models that classify, cite, and rewrite AI communications before send. Vendor-run FINRA recall (95.5% vs 92.9%) is self-reported; independent run in progress.
SpaceXAI’s Grok 4.7 matches Grok 4.6 API token prices. Independent evals show Coding Agent Index gains with Grok Build at xhigh — and higher token use that can raise cost-per-task even when $/token is flat.
OpenAI cut GPT-6 Sol and Luna API prices roughly in half versus GPT-5.6 promo rates. Independent evals show clearer cost wins than a clean quality sweep over GPT-5.6 or Astra.