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claude-sonnet-4-5 vs claude-sonnet-4-6

Side-by-side comparison of claude-sonnet-4-5 and claude-sonnet-4-6 — benchmarks, pricing, context window and capabilities. Both are accessible through Requesty's unified API. claude-sonnet-4-6 outperforms claude-sonnet-4-5 on 9 of 9 shared benchmarks.

Anthropic PBC logo
Anthropic PBC
claude-sonnet-4-5
Input / 1M
$3.00
Output / 1M
$15.00
Context
1M
Model ID
anthropic/claude-sonnet-4-5
Anthropic PBC logo
Anthropic PBC
claude-sonnet-4-6
Input / 1M
$3.00
Output / 1M
$15.00
Context
1M
Model ID
anthropic/claude-sonnet-4-6

Benchmark comparison

MMLU Proknowledge
claude-sonnet-4-583.8%
claude-sonnet-4-685.2%
GPQA Diamondreasoning
claude-sonnet-4-574.2%
claude-sonnet-4-676.8%
HumanEvalcoding
claude-sonnet-4-592.0%
claude-sonnet-4-693.5%
SWE-Bench Verifiedcoding
claude-sonnet-4-570.8%
claude-sonnet-4-677.2%
MATHmath
claude-sonnet-4-587.5%
claude-sonnet-4-689.4%
AIME 2024math
claude-sonnet-4-576.1%
claude-sonnet-4-680.4%
MMMUmultimodal
claude-sonnet-4-573.1%
claude-sonnet-4-674.3%
LiveBenchreasoning
claude-sonnet-4-569.5%
claude-sonnet-4-671.8%
τ-bench Retailagentic
claude-sonnet-4-567.3%
claude-sonnet-4-670.1%

Scores sourced from official model cards, Artificial Analysis, and public leaderboards. Benchmarks measure specific skills and don't capture every aspect of model quality.

Pricing & specifications

claude-sonnet-4-5claude-sonnet-4-6
Input price / 1M$3.00$3.00
Output price / 1M$15.00$15.00
Context window1M tokens1M tokens
Max output64K tokens64K tokens
Vision inputYesYes
Tool callingYesYes
ReasoningYesYes
Prompt cachingYesYes
Computer useYesYes
ProviderAnthropic PBCAnthropic PBC

Questions people ask

Is claude-sonnet-4-5 better than claude-sonnet-4-6?
claude-sonnet-4-6 outperforms claude-sonnet-4-5 on 9 of 9 shared benchmarks. See the benchmark comparison above for specifics — claude-sonnet-4-5 and claude-sonnet-4-6 have different strengths across reasoning, coding, math and multimodal tasks.
Which is cheaper — claude-sonnet-4-5 or claude-sonnet-4-6?
claude-sonnet-4-5 and claude-sonnet-4-6 have identical combined pricing.
Can I use claude-sonnet-4-5 and claude-sonnet-4-6 through the same API?
Yes. Requesty provides a single OpenAI-compatible API that routes to both. Change just the "model" parameter to switch — "anthropic/claude-sonnet-4-5" or "anthropic/claude-sonnet-4-6" — no other code changes needed.
What are the context windows?
claude-sonnet-4-5 supports up to 1M tokens of context. claude-sonnet-4-6 supports up to 1M tokens. Longer context means you can feed larger documents or codebases in a single prompt, though quality often degrades past 128K for most models.

Switch between claude-sonnet-4-5 and claude-sonnet-4-6 with one line of code

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