The Complete Guide to Claude Opus 4.6
80.8% on SWE-bench, still 73K+ real calls in 30 days
Released 2026-02-05 with 80.8% on SWE-bench, native 1M context, and Adaptive Thinking; despite newer 4.7/4.8 releases, QCode still sees 73K+ real calls to it in 30 days — far from obsolete.
Four key numbers
SWE-bench score
A leading coding score at launch, and the number most commonly cited for Opus 4.6.
Native context window
A 1-million-token context window is available on Max/Team/Enterprise plans, suited to large codebases and long documents.
Per million tokens (input/output)
The exact same price as the later Opus 4.7 and 4.8; QCode bills at official price × service rate, with no markup.
Real calls in the last 30 days
As of 2026-08-27, Opus 4.6's actual 30-day call volume on QCode, proving it's still heavily used, not fully replaced by its successors.
What Opus 4.6 is
Claude Opus 4.6 was released by Anthropic on 2026-02-05, scoring 80.8% on SWE-bench, with Adaptive Thinking built in; shortly after launch it gained a 1-million-token native context window (on Max/Team/Enterprise plans). It's the Opus-series flagship that preceded 4.7 and 4.8, priced at $5/$25 per million tokens (input/output) — a price later carried over unchanged to both successors.
Latest development
Anthropic has since released two successors, Opus 4.7 (2026-04-16) and Opus 4.8, and official documentation now focuses new features and benchmark comparisons on the latest release. That doesn't mean 4.6 is deprecated — QCode's real 30-day usage data shows 73K+ calls to Opus 4.6, meaning a large number of existing workflows, scripts, and integrations are still running it stably with no forced need to upgrade.
Timeline
Claude Opus 4.6 launches, scoring 80.8% on SWE-bench with Adaptive Thinking built in.
A 1-million-token native context window is added (Max/Team/Enterprise plans).
Anthropic releases successors Opus 4.7 and 4.8, keeping pricing unchanged at $5/$25.
Confirmed vs. needs your own verification
Confirmed
Opus 4.6 launched 2026-02-05 with 80.8% on SWE-bench, Adaptive Thinking, a 1M native context window (Max/Team/Enterprise), and pricing of $5/$25 per MTok; QCode shows 73K+ real 30-day calls (pulled 2026-08-27 from the platform usage verification).
Needs your own verification
"4.6 is outdated, switch already" is a common default assumption, but whether to upgrade depends on your specific task — if 4.7/4.8's improvements (lower code defect rates, sharper agentic judgment) don't matter much for your use case, sticking with 4.6 is a perfectly reasonable choice. Test against your own task to decide.
Stick with it vs. worth upgrading
Fine to keep using Opus 4.6
You have a stable workflow already, scripts hardcode the model ID, and you're satisfied with current coding/reasoning performance with no strong driver to upgrade.
Worth considering 4.7/4.8
You need higher vision resolution, the xhigh effort tier, or lower code defect rates and stronger agentic judgment — the main gains 4.7/4.8 bring over 4.6.
How to use it
On QCode, the model ID is claude-opus-4-6, with the same interface as other Claude models, billed at official price × service rate. If you later want to upgrade to 4.7 or 4.8, you just swap the model ID for the corresponding version — Anthropic's own 4.7 launch documentation describes this as a straightforward drop-in replacement, and the same logic applies moving from 4.6 to a newer version.
What to do on QCode
On QCode, claude-opus-4-6 shares one key with the whole Claude lineup (Opus 5, Fable 5, the Sonnet family, Haiku 4.5, and more), billed at official price × service rate — no separate application needed just to use a specific version.
FAQ
Is Opus 4.6 still usable?
Yes. QCode shows 73K+ real calls in the last 30 days — one of the more heavily-used models on the platform, available to call anytime.
How different are 4.6, 4.7, and 4.8?
4.7 improves on SWE-bench Pro (64.3%), vision resolution (3.75MP), and adds the xhigh reasoning tier; 4.8 further improves agentic task judgment and code defect rate (4x lower than 4.7). All three are priced identically at $5/$25.
What context window does Opus 4.6 support?
It natively supports a 1-million-token context window, available on Max, Team, and Enterprise plans.
Is upgrading from 4.6 to 4.7/4.8 complicated?
Per Anthropic's own guidance, it's a straightforward swap — just change the model ID from claude-opus-4-6 to the corresponding version, no other config changes needed.
What is Opus 4.6 good for?
Tasks needing strong coding ability and long context — large codebase comprehension, complex refactors, long-document analysis. For simpler tasks, Sonnet or Haiku tiers offer better value.
How is Opus 4.6 billed on QCode?
At the official rate of $5/$25 per million tokens (input/output) × service rate, matching Anthropic's own API pricing baseline directly, with no additional markup from QCode.
Sources
Opus 4.6's launch date, SWE-bench score, context window, and pricing come from already-verified Claude model pages on this site and Anthropic's official release information; the 30-day real usage figure comes from QCode platform usage verification, pulled 2026-08-27.
Claude Opus 4.6, ready whenever you need it
One QCode key calls Opus 4.6 and the whole Claude lineup, billed at official price × service rate.
Related reading
The complete guide to Claude Opus 4.7
4.6's direct successor, including upgrade guidance.
The complete QCode.cc pricing guide
The 7 plan tiers and how billing works.
Claude's 5-Hour Rolling Window Explained
The quota mechanism most likely to trip up Opus-series usage.
This page's model capability and benchmark descriptions are based on Anthropic's official release information and are not an official QCode statement; actual call volume and sale status are governed by live QCode platform data.