Felix Pinkston
Mar 13, 2026 21:06
Claude Opus 4.6 and Sonnet 4.6 now provide full 1M token context home windows at normal API pricing, eliminating the long-context premium completely.
Anthropic simply made a major pricing transfer. The corporate introduced Friday that its Claude Opus 4.6 and Sonnet 4.6 fashions now embrace the complete 1 million token context window at normal charges—no premium pricing, no multipliers, no beta headers required.
A 900,000-token request now prices the identical per-token charge as a 9,000-token one. That is $5/$25 per million tokens for Opus 4.6 and $3/$15 for Sonnet 4.6, unchanged from base pricing.
What Really Modified
The sensible implications matter greater than the announcement itself. Builders beforehand wanted to ship beta headers for requests exceeding 200K tokens. That requirement is gone—present code with beta headers will merely ignore them.
Media dealing with obtained a considerable improve too. Customers can now course of as much as 600 photographs or PDF pages per request, up from 100. That is a 6x enhance that opens up document-heavy workflows that had been beforehand impractical.
The expanded context is stay throughout Claude Platform, Microsoft Azure Foundry, and Google Cloud’s Vertex AI.
Efficiency at Scale
Anthropic launched benchmark knowledge to again up the enlargement. Opus 4.6 scores 78.3% on MRCR v2 on the full 1M token size—the very best amongst frontier fashions at that context measurement, based on the corporate. Sonnet 4.6 hits 68.4% on GraphWalks BFS beneath the identical circumstances.
These numbers matter as a result of context size with out recall accuracy is ineffective. Loading a complete codebase means nothing if the mannequin cannot discover the related operate buried 800K tokens deep.
Claude Code Will get the Improve
For Max, Group, and Enterprise customers working Claude Code, Opus 4.6 periods now routinely entry the complete 1M context window. The sensible profit: fewer dialog compactions and extra of the session historical past preserved intact.
Beforehand, sustaining that context size required further utilization allocation. Now it is bundled in.
Why This Issues for Enterprise
The timing aligns with how enterprises are literally utilizing these fashions. Opus 4.6, launched February 5, 2026, has been deployed for safety audits—Anthropic claims it found over 500 zero-day vulnerabilities in open-source code. Sonnet 4.6, which dropped February 17, handles the majority of cost-sensitive workloads the place velocity issues greater than most reasoning depth.
Eliminating the long-context premium removes a friction level for workflows that genuinely want large enter home windows: full repository evaluation, multi-year contract critiques, or agent traces that accumulate substantial context over prolonged periods.
The transfer additionally pressures rivals. OpenAI and Google each provide prolonged context home windows, however pricing buildings fluctuate. Anthropic betting that flat-rate simplicity wins developer mindshare is not unreasonable.
Picture supply: Shutterstock
