Claude Opus 4.6 is Anthropic’s latest state-of-the-art reasoning model. It features an adaptive “thinking” mode that dynamically decides when to think and how much to think. At the default effort level (high), Claude will almost always engage in thinking. At lower effort levels, it may skip thinking for simple problems. ⚠️ The minimum cache token for claude-opus-4-6 has been increased from 1,024 to 4,096 tokens.
Anthropic Opus 4.6 vs Claude 3.7 Sonnet
Compare Anthropic Opus 4.6 from Anthropic and Claude 3.7 Sonnet from Anthropic on key metrics including benchmarks, price, context length, and other model features. Access both models and hundreds of others through the AIHubMix API.
Support for the thinking parameter through the original Claude SDK.
Pricing & Specifications
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.
Activity Past 30 Days
Daily traffic served through AIHubMix — how demand for each model is trending.
Tokens / day
Requests / day
Performance Past 3 Days
Measured on real AIHubMix traffic, hourly buckets. Gaps mean no traffic in that hour.
Throughput (tok/s)
TTFT (s)
Uptime (%)
LMArena Benchmarks
LMArena ratings by capability (Bradley-Terry, commonly called Elo). Higher is better.
Source: LMArena (arena.ai) leaderboard, imported by AIHubMix. Models without published ratings are omitted per chart.
Cost calculator
Estimate your monthly bill for the same workload on each model.
Monthly = daily × 30. Discounted rates applied where a promotion is active.
FAQ
Which is cheaper: Anthropic Opus 4.6, Claude 3.7 Sonnet?
Claude 3.7 Sonnet: $16.5/M output tokens; Anthropic Opus 4.6: $25/M. Use the cost calculator above to estimate your own workload.
How do their coding arena scores compare?
Anthropic Opus 4.6: 1548; Claude 3.7 Sonnet: 1430 (LMArena coding leaderboard).
Which responds faster?
Claude 3.7 Sonnet: 0.6s time to first token measured on AIHubMix; see the live performance charts above for how each model behaves across the day.
How large is each context window?
Anthropic Opus 4.6 accepts 200,000 and Claude 3.7 Sonnet accepts 200,000 input tokens. Maximum output per request is 32,000 tokens on Anthropic Opus 4.6 and 128,000 tokens on Claude 3.7 Sonnet.
Which one generates tokens faster?
Claude 3.7 Sonnet at 57.3 tok/s and Anthropic Opus 4.6 at 39.7 tok/s, measured as output throughput on AIHubMix — a separate metric from time to first token.
What inputs and capabilities does each model support?
Anthropic Opus 4.6 accepts text and image input and supports thinking, tool calling, function calling and structured outputs; Claude 3.7 Sonnet accepts text and image input and supports thinking, tool calling, function calling and structured outputs.
Can I call Anthropic Opus 4.6 and Claude 3.7 Sonnet with the same API key?
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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