---
title: "Artificial Analysis Coding Agent Index: GPT-6 Astra scored 67, roughly equal to Claude Opus 5, Fable 5, and Muse Spark 1.3, but trailing leader Fable 5.1's 70 (Artificial Analysis)"
type: signal
url: https://frontiernewswire.com/s/artificial-analysis-coding-agent-index-gpt-6-astra-scored-67-roughly-e07dae3d
published: 2026-09-04T13:10:02.000Z
byline: "Source: TECHMEME"
---

# Artificial Analysis Coding Agent Index: GPT-6 Astra scored 67, roughly equal to Claude Opus 5, Fable 5, and Muse Spark 1.3, but trailing leader Fable 5.1's 70 (Artificial Analysis)

Source: TECHMEME · Published 2026-09-04 · Canonical: https://frontiernewswire.com/s/artificial-analysis-coding-agent-index-gpt-6-astra-scored-67-roughly-e07dae3d

Artificial Analysis : Artificial Analysis Coding Agent Index: GPT-6 Astra scored 67, roughly equal to Claude Opus 5, Fable 5, and Muse Spark 1.3, but trailing leader Fable 5.1's 70 — Fable 5.1 in Claude Code leads the Index with a score of 70. … Various effort levels of the model occupy the Pareto frontier of token efficiency.

In this story: [Claude Code](https://frontiernewswire.com/models/claude-code), [Artificial Analysis](https://frontiernewswire.com/companies/artificial-analysis), [Claude Opus 5](https://frontiernewswire.com/models/claude-opus-5), [Fable 5](https://frontiernewswire.com/models/fable-5), [Fable 5.1](https://frontiernewswire.com/models/fable-5-1), [AI coding agents](https://frontiernewswire.com/topics/ai-coding-agents), [Muse Spark 1.3](https://frontiernewswire.com/models/muse-spark-1-3)

## Sources

- [Read the original at TECHMEME](https://www.techmeme.com/260904/p15#a260904p15)

## Related on Frontier

- [Revolut says it cut AI coding inference costs by \~90% in less than a year by making self-hosted GLM models its default over commercial tools like Claude Code (Tobias Mann/The Register)](https://frontiernewswire.com/s/revolut-says-it-cut-ai-coding-inference-costs-by-90-in-less-than-a-d2d43082)
- [Researchers say LLMs can be good at natively reading and writing neural network weights; GPT-6 Astra edited Qwen3.5-0.8B's weights to make it better at math (Rikiya Takehi)](https://frontiernewswire.com/s/researchers-say-llms-can-be-good-at-natively-reading-and-writing-e4f14b26)
- [DeepSeek Drops Enhanced Coding Agent With Aim to Rival Anthropic](https://frontiernewswire.com/s/deepseek-drops-enhanced-coding-agent-with-aim-to-rival-anthropic-817b652f)

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