Compare Claude Opus 5.5 from Anthropic and GPT 6.1 Terra from OpenAI on key metrics including benchmarks, price, context length, and other model features. Access both models and hundreds of others through the AIHubMix API.
Claude Opus 5.5
GPT 6.1 TerraClaude Opus 5.5 is Anthropic’s latest flagship model. In Anthropic’s comprehensive alignment testing, Opus 5.5 is the strongest-performing model tested to date. It also includes the safety safeguards Anthropic has developed for its most capable models.
GPT-6.1 Terra is OpenAI’s multimodal reasoning model, supporting text and image inputs for tasks such as product photo matching, technical drawing interpretation, application interface interaction, and text drafting and revision. It combines speed and efficiency with visual reasoning, precise computer use, and clear, natural writing.
Prices are per million tokens. Time to First Token and throughput are rolling averages measured on AIHubMix.
Promotional prices show the discounted rate; see each model page for promotion windows.
Daily traffic served through AIHubMix — how demand for each model is trending.
Measured on real AIHubMix traffic, hourly buckets. Gaps mean no traffic in that hour.
Estimate your monthly bill for the same workload on each model.
Monthly = daily × 30. Discounted rates applied where a promotion is active.
GPT 6.1 Terra: $5/M output tokens; Claude Opus 5.5: $20/M. Use the cost calculator above to estimate your own workload.
Claude Opus 5.5: 0.9s time to first token measured on AIHubMix; see the live performance charts above for how each model behaves across the day.
Claude Opus 5.5 at 99.7 tok/s and GPT 6.1 Terra at 66.7 tok/s, measured as output throughput on AIHubMix — a separate metric from time to first token.
Claude Opus 5.5 accepts text, image and PDF input; GPT 6.1 Terra accepts text and image input.
Yes. AIHubMix serves every model on this page behind one OpenAI-compatible endpoint, so switching between them is a one-line change to the model field — no second account, key or SDK.
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