Vibe Coding2026-09-23 · source-backed

Copilot shipped Opus 5.5, Sol and Luna on launch day, one day after Grok 4.7.

Issue

2026-09-23

Confidence

source-backed

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Redaction

redacted

Story

GitHub's changelog carries separate entries for all of them on September 22. Frontier models now reach Copilot within hours of a vendor launch. The lab APIs' 40-50% price cuts don't reach Copilot users until GitHub changes its premium-request multipliers, which the entries don't mention.

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GitHub quietly updated its Copilot pricing multiplier table, and the numbers are jarring. Starting June 1, 2026, every Copilot interaction gets priced in "AI Credits" with per-model multipliers: Claude Opus at 27x the base rate, Claude Sonnet at 9x, and base completions at 1x....
GPT-5.6, Grok 4.5 and rivals cluster within six points
Everyone kept score wrong. When OpenAI shipped GPT-5.6 (the Sol flagship plus Terra and Luna) to GA on July 9, then xAI put out Grok 4.5, Meta dropped Muse Spark 1.1, and Cognition shipped SWE-1.7, the reflex was to ask who won the benchmark. Wrong question. On the Artificial...

Source trail

GitHub's changelog More from github.blog

Entities

APIs Copilot Frontier GitHub Grok Luna Opus September

Provenance

Canonical issue: Ramsay Research Agent — September 23, 2026
AI generated: no
Story unit: 2026-09-23-copilot-shipped-opus-5-5-sol-and-luna-on-launch-day-one-day-after-grok-4-7
Labels: source-backed, canonical briefing excerpt

Fetching from the wire…

Copilot shipped Opus 5.5, Sol and Luna on launch day, one day after Grok 4.7.

Story

Related stories

GitHub, Spotify and CodeRabbit all decided the frontier model shouldn't be writing the code

Anthropic Ships Claude Opus 5. Double the Bench, Half the Price, and an 87-Minute Outage to Match

Grok 4.7 buys two points of benchmark by burning 81,000 output tokens per task

Microsoft spreads MAI-Code-1-Flash across every Copilot surface.

GitHub Copilot Moves to Usage-Based Billing June 1. Opus Costs 27x Base Rate.

GPT-5.6, Grok 4.5 and rivals cluster within six points

Source trail

Entities

Provenance

Copilot shipped Opus 5.5, Sol and Luna on launch day, one day after Grok 4.7.

Story

Related stories

GitHub, Spotify and CodeRabbit all decided the frontier model shouldn't be writing the code

Anthropic Ships Claude Opus 5. Double the Bench, Half the Price, and an 87-Minute Outage to Match

Grok 4.7 buys two points of benchmark by burning 81,000 output tokens per task

Microsoft spreads MAI-Code-1-Flash across every Copilot surface.

GitHub Copilot Moves to Usage-Based Billing June 1. Opus Costs 27x Base Rate.

GPT-5.6, Grok 4.5 and rivals cluster within six points

Source trail

Entities

Provenance

Story

Related stories

GitHub, Spotify and CodeRabbit all decided the frontier model shouldn't be writing the code

Anthropic Ships Claude Opus 5. Double the Bench, Half the Price, and an 87-Minute Outage to Match

Grok 4.7 buys two points of benchmark by burning 81,000 output tokens per task

Microsoft spreads MAI-Code-1-Flash across every Copilot surface.

GitHub Copilot Moves to Usage-Based Billing June 1. Opus Costs 27x Base Rate.

GPT-5.6, Grok 4.5 and rivals cluster within six points

Tomorrow's issue, in your inbox.

Source trail

Entities

Provenance

Story

Related stories

GitHub, Spotify and CodeRabbit all decided the frontier model shouldn't be writing the code

Anthropic Ships Claude Opus 5. Double the Bench, Half the Price, and an 87-Minute Outage to Match

Grok 4.7 buys two points of benchmark by burning 81,000 output tokens per task

Microsoft spreads MAI-Code-1-Flash across every Copilot surface.

GitHub Copilot Moves to Usage-Based Billing June 1. Opus Costs 27x Base Rate.

GPT-5.6, Grok 4.5 and rivals cluster within six points

Tomorrow's issue, in your inbox.

Source trail

Entities

Provenance