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Best GPT-5.5 alternatives

Looking beyond GPT-5.5? These 12 tools cover the same job, matched on what each one does. Compare pricing here and open any listing for its pros and cons.

Claude Sonnet 5 logo

Coding agents, tool-using workflows, and long-context professional work

GLM-5.3 Review: Coding, API Pricing & Open Weights logo

Review GLM-5.3 for agentic coding and security work, including benchmarks, API and Coding Plan pricing, 1M context, license, migration, and risks.

Grok 4.6 Review: Context, Pricing & Agent Features logo

Review Grok 4.6's 500K context, reasoning levels, coding and agent tools, API and consumer pricing, limits, and alternatives.

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Explore OpenAI Codex features, pricing, workflows, strengths, limitations, and alternatives for agentic software development.

Gemini 3.7 Flash Review: Specs, Pricing & Limits logo

Review Gemini 3.7 Flash's 1M context, coding and agent tools, introductory and 2027 pricing, data terms, migration requirements, and limitations.

Qwen3.7-Max: API Pricing, 1M Context & Agent Features logo

Qwen3.7-Max is Alibaba's flagship agent model for coding and long-running tasks. Review its 1M context, tool use, API pricing, snapshots and limits.

Kimi K2.7 Code: Benchmarks, API Pricing & Requirements logo

Kimi K2.7 Code is Moonshot AI's open-weight agentic coding model. See its 256K context, API pricing, Kimi Code plans, license and limits.

Claude Fable 5.1 logo

Coding, knowledge work and long-running agents

Codex Max Explained: Current Mode vs Old GPT-5.1 Model logo

The hardest single-agent coding or analysis work

Claude Opus 5.5 logo

Coding, research, writing, documents, and complex agents

GLM-5.1 Review: API Pricing, Coding & Open Weights logo

Review GLM-5.1 for agentic coding, including its 200K context, API pricing, MIT-licensed open weights, benchmarks, limitations, and GLM-5.3 migration.

OpenAI Codex App logo

Parallel agentic coding and long-running desktop work