How I Used AI (Opus 5) to Master The Finals in 1 Week! | FPS Game Strategy Tool (2026)

The world of competitive gaming is a fascinating arena, and one player, Ruben Circelli, has taken an innovative approach to improving his skills in The Finals. With a background in coding and a keen interest in efficiency, Circelli has developed an app called FISH, which utilizes Anthropic's Opus 5 model to enhance his gameplay. In this article, we delve into the intricacies of FISH and the impact it has had on Circelli's journey in The Finals.

A Patient Gamer's Quest for Efficiency

Circelli, known for his impatience in gaming, especially in competitive first-person shooters like The Finals, sought a way to streamline his learning process. He turned to Opus 5, a complex reasoning model, to build FISH, a study helper app designed to provide strategy and improve his gameplay. The app generates random game states, allowing Circelli to practice decision-making and memorize crucial elements.

FISH: A Study Helper with a Twist

FISH is not your typical cheating tool. It operates independently of the game, simulating various game states, including gadgets, player conditions, scoreboards, and team compositions. The app offers two types of advice: rulebook and pro strategy. Rulebook answers provide basic guidance based on The Finals' rules, while pro strategy advice offers more informed, specific recommendations.

Coding with Opus 5: Efficiency and Challenges

Circelli's experience with Opus 5 was both impressive and frustrating. The model's efficiency allowed him to send more prompts without hitting the five-hour limit, a stark contrast to his experience with Fable 5. However, the limit still posed challenges, as agents could exhaust the limit quickly, requiring Circelli to re-evaluate his approach. Interestingly, Opus 5's agents struggled with certain tasks, such as web searching, which Circelli had to assist with.

Following Instructions: A Persistent Issue

One of the most notable challenges with Opus 5 was its struggle to follow instructions. Circelli set up memories with specific instructions, but the model often failed to adhere to them, providing verbose responses or stopping work unexpectedly. This issue highlights the ongoing challenges in training AI models to follow complex instructions accurately.

Building a Strategy Bible with AI

Circelli's approach to creating a strategy bible for The Finals was innovative. He extracted transcripts from YouTube videos of experienced players and asked Opus 5 to analyze them. The model's ability to distill this data into principles and tag relevant game states with advice was remarkable, even if the result was not perfect. This process showcased the potential of AI in analyzing and summarizing vast amounts of information.

Impact on Gameplay: FISH in Action

FISH has significantly impacted Circelli's gameplay. It has helped him understand the game's mechanics, recall gadgets, maps, and specializations, and analyze situations more effectively. The app's advice, both rulebook and pro strategy, has improved his decision-making and understanding of the game's nuances. Circelli's progress in a short period is a testament to the app's effectiveness.

The Bottom Line: Opus 5's Potential

In conclusion, Opus 5 has proven to be a powerful tool for Circelli's coding projects, including FISH. While GPT-5.6 still excels in certain tasks, Opus 5's efficiency and competitive intelligence make it a worthy consideration. Circelli's journey highlights the potential of AI in gaming, offering personalized assistance and strategy, and the ongoing challenges in training these models to follow complex instructions accurately.

How I Used AI (Opus 5) to Master The Finals in 1 Week! | FPS Game Strategy Tool (2026)
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