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The company xAI has introduced Grok 4.7 on Amazon Bedrock: a context window of 500 000 tokens and four reasoning effort levels. According to Artificial Analysis, performance on agentic tasks and knowledge work improves compared with Grok 4.6, but at roughly twice the token consumption.
Grok 4.7 from xAI is gradually becoming available in GitHub Copilot for all paid tiers (Pro, Pro+, Max, Business, Enterprise), billed at the provider's list prices.
The company xAI has released Grok 4.7 at $2/million input tokens and $6/million output tokens. On the Artificial Analysis index (v4.3.2), it achieves a score of 46, while Claude Fable 5.1 and GPT-6 lead with a score of 53 each. In the agentic coding test Terminal-Bench 4.0, it scores only 26 %.
OpenAI released the GPT-6 Sol and Luna models on 22 September 2026 at prices 50% lower than GPT-5.6 (Sol 2/10 USD, Luna 0.10/0.50 USD per million tokens). However, an independent analysis by Artificial Analysis shows that actual capabilities remain at the level of their predecessors and have even declined on some tasks.
New: Anthropic released Claude Opus 5.5 on the same day (2026-09-23), roughly an hour after OpenAI; Claude Opus 5.5 is 20% cheaper than the previous Opus 5.0 ($4/$20 vs $5/$25); Opus 5.5 improved communication style and token efficiency; The model releases launch a 'price war' between the two largest AI companies; GPT-6 Luna and Sol are part of a broader strategy of price competition, not an isolated release
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