The flagship just got a 50 percent haircut. openai cut gpt-6 api prices on oct 7, dropping sol to…
the flagship just got a 50 percent haircut. openai cut gpt-6 api prices on oct 7, dropping sol to $2 per million input tokens as the price war with anthropic's opus 5.5 went public.
the reasoning tier now trades like a commodity.
Context
Verified event date: OpenAI launched GPT-6 Sol and Luna on Sep 22, 2026, with Sol at $2 per million input tokens and $10 per million output tokens, down from $4 and $20 for the GPT-5.6 promotional prices (iClarified, Sep 22; OpenAI's model page lists $2 input). Apidog (Sep 23) notes the advertised 50 percent cut is measured against GPT-5.6 promotional pricing.
StackSpend (Oct 6, 2026) lists Claude Opus 5.5 at $4 and $20, down from Opus 5's $5 and $25, and Claude Sonnet 5.5 and GPT-6 Sol both at $2 and $10 per million tokens.
The $2 per million input tokens for Sol and the 50 percent cut match OpenAI's launch coverage, but they date from Sep 22, 2026, not Oct 7, and the 50 percent is against GPT-5.6's promotional rates. Anthropic's Opus 5.5 was released the same day at $4 input per qcode. That the price war 'went public' on Oct 7 and a flagship haircut on that date were not seen in the sources read, so unsupported here, not refuted. 'The reasoning tier now trades like a commodity' is the author's.
'the flagship just got a 50 percent haircut' is the author's opinion.
Related work
Watch next
- Check whether OpenAI changed GPT-6 prices again on Oct 7.
Sources
- StackSpend: LLM pricing October 2026stackspend.app
- QCode: Claude Opus 5.5 versus GPT-6 Solqcode.cc
- Claude Platform Docs: pricingplatform.claude.com
Provenance
The note above is reproduced unedited from the original post, first published on Threads on 11 October 2026 at 14:17 IST. Sources are the papers and datasets the note draws on.
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