comparison

GPT-5.5 High vs Sonnet 4.6 High

Compare GPT-5.5 High and Sonnet 4.6 High across score, cost, runtime, stability, and task fit when deciding between Codex and Claude Code inside onesagent.

Set fallback across both models in onesagent Read the competitor research guide

Dimension

GPT-5.5 High

Sonnet 4.6 High

Benchmark score

75.0

83.3

Cost (latest)

$24.93

$31.22

Runtime seconds

2141

7680

Stability status

red

green

Best fit

harder coding

research and synthesis

decision summary

What should a buyer actually do?

Pick GPT-5.5 High for difficult coding tasks where raw Codex capability matters more than stability. Pick Sonnet 4.6 High for stronger cross-functional research and a greener current operating profile.

/models/gpt-models#gpt-5-5-high

/models/claude-models#sonnet-4-6-high

/guides/best-model-for-long-running-ai-tasks

Generated: 2026-07-01T12:30:00+08:00

Latest successful sync: 2026-07-01T12:20:00+08:00

Freshness: fresh_with_public_source_sync

Sources

Codex Radar Codex Radar current.json Codex Radar feed.xml Claude Code Radar Claude Code Radar JSON

FAQ

Direct answers for searchers.

Which model is better for research?

Current public signals favor Sonnet 4.6 High for research-oriented workflows thanks to its balance of score, value, and stability.

Which model is better for hard coding?

GPT-5.5 High is more likely to be worth the tradeoff when coding complexity is the primary concern.