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Claude Sonnet 5 vs Sonnet 4.6
Same price — but Sonnet 5 has 5x the context window and better reasoning. Sonnet 4.6 is approaching end-of-life. Should you migrate?
Pricing data verified: Jul 1, 2026
| Specification | Claude Sonnet 5 (Anthropic) | Claude Sonnet 4.6 (Anthropic) DEPRECATED |
|---|---|---|
| Input Price (per 1M tokens) | $3.00 | $3.00 |
| Output Price (per 1M tokens) | $15.00 | $15.00 |
| Intro Price (through Aug 2026) | $2.00 / $10.00 | N/A |
| Context Window | 1M tokens | 200K tokens |
| Tier | Mid | Mid (deprecated) |
| Provider | Anthropic | Anthropic |
Calculate Your Exact Costs
Same price at standard rates — but Sonnet 5 has an intro price of $2/$10 through August 2026
Other Anthropic Models
Which Model for Which Use Case?
Code Generation
Sonnet 5 produces higher-quality code with better reasoning than Sonnet 4.6 — at the same price. With the intro pricing at $2/$10, it's actually 33% cheaper. There's no reason to stay on Sonnet 4.6 for code tasks.
Content Generation
Sonnet 5 handles content generation as well as or better than Sonnet 4.6. Same pricing, better output quality, and 5x the context window for processing long documents. Upgrade is a no-brainer.
Data Analysis
Sonnet 5's 1M context window (vs Sonnet 4.6's 200K) is a game-changer for data analysis. You can process 5x more data in a single request. Combined with better reasoning, Sonnet 5 dominates here.
Migration
Sonnet 5 is a drop-in replacement for Sonnet 4.6. Just change the model name in your API calls. Same pricing, same API format, better results. With Sonnet 4.6 approaching sunset, migrate now to avoid disruption.
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Frequently Asked Questions
Do Sonnet 5 and Sonnet 4.6 cost the same?
Yes, both are priced at $3.00/$15.00 per 1M tokens at standard rates. Anthropic is also offering an introductory price of $2.00/$10.00 for Sonnet 5 through August 2026, making it actually cheaper than Sonnet 4.6 during the promo period.
Should I migrate from Sonnet 4.6 to Sonnet 5?
Yes. Sonnet 5 is a drop-in replacement for Sonnet 4.6 — same API, same pricing, but with 5x the context window (1M vs 200K) and significantly better reasoning. There is no reason to stay on Sonnet 4.6. Migration requires only changing the model name in your API calls.
What happens when Sonnet 4.6 is deprecated?
Sonnet 4.6 is approaching end-of-life. Anthropic will sunset the model and all API calls to it will fail. You should migrate to Sonnet 5 now to avoid disruption. Since Sonnet 5 is a drop-in replacement, migration is trivial — just update your model parameter.
Related Comparisons
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