Coding · Head-to-head

GPT-5.5 vs MiniMax M3

GPT-5.5 vs MiniMax M3: pricing, features, and which to pick in 2026.

GPT-5.5View full review →

MiniMax M3View full review →

The verdict

Pick GPT-5.5 if…

→overall capability matters more than price (AI Score 9.4 vs 8.5)
→you want our editor's pick for this category
→your primary use case is developers and teams needing a frontier reasoning model for agentic coding workflows and large-codebase context handling.

Try GPT-5.5 →

Pick MiniMax M3 if…

→budget is the constraint
→your primary use case is developers and teams who need frontier-level coding and agentic model performance without frontier pricing.

Try MiniMax M3 →

Side-by-side specs

Spec	GPT-5.5	MiniMax M3
Category	Coding	Coding
Pricing model	paid	freemium
Headline pricing	API: $5/$30 per 1M tokens (in/out). ChatGPT Plus $20/mo, Pro $200/mo	Freemium — Plus $20/mo, API $0.30/M input / $1.20/M output
Free tier	No free API tier. Free ChatGPT users get GPT-4o, not GPT-5.5.	Free API tier available for evaluation. Check platform.minimax.io for current limits.
AI Score	9.4/10	8.5/10
Best for	Developers and teams needing a frontier reasoning model for agentic coding workflows and large-codebase context handling.	Developers and teams who need frontier-level coding and agentic model performance without frontier pricing.
Editor's pick	✓ Yes	—
Use cases	development agents	development agents
Date added	2026-05-02	2026-06-09

Pros and cons

GPT-5.5

Coding · paid

Pros

✓Top-of-class coding and reasoning benchmarks — measurably ahead of GPT-5 and competitive alternatives
✓True agentic capability with tool use, self-correction, and multi-step task completion
✓272K context handles entire codebases without chunking workarounds
✓Codex integration turns it into an autonomous software engineer inside ChatGPT

Cons

×API pricing is premium — $30/M output tokens adds up fast for heavy usage
×No free tier for the API; ChatGPT Free users are stuck on GPT-4o
×Slower inference than lighter models like GPT-4o-mini for simple tasks
×Closed-source with no self-hosting option — full vendor lock-in to OpenAI

MiniMax M3

Coding · freemium

Pros

✓Frontier-level coding and agentic performance at 5-10% of GPT-5.5 or Gemini 3.1 Pro pricing
✓1M token context window handles entire codebases without chunking
✓Open weights allow self-hosting, fine-tuning, and full model inspection
✓Available on OpenRouter and third-party providers, not locked to a single platform

Cons

×Developer platform and tooling less mature than OpenAI or Anthropic ecosystems
×Limited native IDE integrations — mostly accessed via API or third-party providers
×Chinese company origin may raise data governance concerns for some enterprise buyers
×Promotional API pricing may increase once the introductory period ends

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Updated 2026-06-09. Spec data sourced from official product pages and tracked in our public directory at /tools.