LLMJul 9, 2026, 6:37 PM

GPT-5.6 Sol nearly matches Fable 5 on aggregated benchmarks at one-third the cost

30-second summary

OpenAI's GPT-5.6 Sol scores 59 on the Artificial Analysis Intelligence Index, just one point behind Fable 5, while costing a third of the price.

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GPT-5.6 Sol nearly matches Fable 5 on aggregated benchmarks at one-third the cost
Key takeaways
  • GPT-5.6 Sol scores 59 on the Artificial Analysis Intelligence Index, just one point behind Fable 5.
  • GPT-5.6 Sol costs a third of what Anthropic's top model charges.
  • GPT-5.6 Sol beats every competitor in agentic coding.
Full story

OpenAI's GPT-5.6 Sol has made significant strides in the AI model arena by scoring 59 points on the Artificial Analysis Intelligence Index, just one point behind the industry-leading Fable 5. What's more impressive is that GPT-5.6 Sol achieves this feat at a cost of $1.04 per task, which is a third of what Anthropic's top model charges. This development adds to the growing pressure on competitors, particularly Anthropic, to reduce their pricing.

In agentic coding, GPT-5.6 Sol has emerged as the top performer, beating every other competitor in the field. This achievement is a testament to OpenAI's continued innovation and commitment to pushing the boundaries of AI technology. As the AI landscape continues to evolve, it will be interesting to see how GPT-5.6 Sol's performance impacts the market and the strategies of its competitors.

The fact that GPT-5.6 Sol can match Fable 5's performance at a significantly lower cost is a significant development that has the potential to disrupt the AI market. It remains to be seen how Anthropic and other competitors will respond to this challenge, but one thing is certain - the AI landscape is about to get a lot more interesting.

Why this matters
Developers

GPT-5.6 Sol's performance has significant implications for developers working with AI models.

Businesses

The cost-effectiveness of GPT-5.6 Sol could disrupt the AI market and impact business strategies.

Investors

GPT-5.6 Sol's performance could impact the valuation of AI companies and their stock prices.

Students

GPT-5.6 Sol's achievement highlights the rapid progress being made in AI research and development.

Everyone

GPT-5.6 Sol's performance is a significant development in the AI landscape that has far-reaching implications.

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