AI tool comparison
Claude Opus 4.7 vs GPT-5.5
Which one should you ship with? Here is the side-by-side panel verdict, pricing read, reviewer split, and community vote comparison.
Foundation Models
Claude Opus 4.7
Anthropic's new flagship — 87.6% SWE-bench, 1M context
75%
Panel ship
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Community
Paid
Entry
Claude Opus 4.7 is Anthropic's latest flagship model, released April 16. It scores 87.6% on SWE-bench Verified — a 13-point improvement over Claude Opus 4.6 — and 94.2% on GPQA, making it competitive with the top frontier models on coding and scientific reasoning benchmarks. The context window extends to 1 million tokens with substantially improved retrieval accuracy at the far end of the window. The release introduces "Routines" — a first-party feature for defining persistent agentic workflows that Claude can execute autonomously across multiple sessions. Routines are defined in structured YAML and can include tool calls, conditional logic, and human-in-the-loop checkpoints. Anthropic positions this as a more reliable alternative to custom agent frameworks for common use cases. Pricing remains unchanged from Opus 4.6: $5/M input tokens, $25/M output tokens. The vision input resolution has been increased by 3.3x, which meaningfully improves performance on documents, diagrams, and UI screenshots. Available via API immediately and rolling out to Claude.ai Pro and Team plans over the next week.
AI Models
GPT-5.5
OpenAI's new flagship unifies chat, code, and browser into one agent
75%
Panel ship
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Community
Free
Entry
OpenAI shipped GPT-5.5 on April 23, 2026, positioning it as "a major step toward a unified AI super-app" that combines chat, coding, and browser use in a single model. It is accessible via a new Agent Mode dropdown inside ChatGPT for Pro, Plus, and Team subscribers, and through the API for developers. The model delivers stronger tool use and reliability than its predecessors, with particular improvements in multi-step agentic task completion. New workspace agents for ChatGPT Business and Enterprise can autonomously handle tasks across Slack, Gmail, and other connected platforms — the same territory OpenAI has been building toward since the Agents SDK launch earlier this year. GPT-5.5 is OpenAI's answer to growing pressure from Anthropic's Claude Opus 4.7, Google's Gemini Enterprise platform, and open-source contenders like Kimi K2.6 and Arcee Trinity. Whether it actually leapfrogs the competition or merely matches it is still shaking out in independent benchmarks, but for the millions of existing ChatGPT users, it's the biggest capability jump they'll feel in day-to-day use this year.
Reviewer scorecard
“87.6% on SWE-bench isn't a small improvement — that's a meaningful jump for real-world coding tasks. The Routines feature addresses the biggest pain point with Claude in production: reliable multi-step agent behavior without building a custom framework.”
“The API reliability improvements alone make this worth upgrading. Multi-step tool use has been the weak link in production OpenAI deployments — if GPT-5.5 actually fixes flakiness in function calling chains, that's worth the token cost increase.”
“Benchmarks look great but the 1M context window performance hasn't been independently validated at the limits. Routines sound powerful but the YAML spec is still in beta with known edge cases. If you're running stable Opus 4.6 workflows, wait a week for the community to stress-test this before migrating.”
“OpenAI's release cadence has become so fast that GPT-5.5 may already feel dated by the time you integrate it. Independent benchmark results are inconsistent — some put it behind Kimi K2.6 on coding. And the 'unified super-app' framing is marketing; you're still paying separately for every capability.”
“Anthropic is quietly winning the enterprise coding agent race. The combination of top SWE-bench scores with the Routines feature is a moat — developers don't switch orchestration frameworks easily once workflows are deployed. This release deepens that lock-in strategically.”
“The Slack and Gmail workspace agents are the real story — they bring agentic AI to the office worker who will never touch an API. OpenAI's distribution advantage means GPT-5.5 will be the most-used AI model on the planet within weeks of launch, regardless of benchmark rankings.”
“The 3.3x vision resolution upgrade is underrated for design work. Document analysis, layout review, and iterating on visual mockups are all dramatically better. I can finally paste a full Figma export and get coherent feedback on the entire design rather than just the top half.”
“Agent Mode in ChatGPT is finally making AI feel less like a chatbot and more like a collaborator. For creators who live in a browser, having a model that can autonomously browse, research, and draft without constant hand-holding is a genuine time multiplier.”
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