Claude Opus 4.6 vs Claude Opus 5.5

Price, context window & benchmark comparison

A

Claude Opus 4.6

Anthropic
$5.00 / $25.00
Input / Output · per 1M tokens
VS
A

Claude Opus 5.5

Anthropic
$4.00 / $20.00
Input / Output · per 1M tokens
Compare different models
A
A
Verdict: Claude Opus 5.5 is 20% cheaper than Claude Opus 4.6 on a typical 3:1 input/output mix.
Claude Opus 4.6Claude Opus 5.5
Input price / 1M$5.00$4.00
Output price / 1M$25.00$20.00
Blended price (3:1)$10.00$8.00
Cached input / 1M$0.50$0.20
Context window1M1M
Max output128K128K
Intelligence index—57.6
Coding index——
Providers—11
Best provider uptime (30m)—100.0%
Vision inputYesYes
ReasoningYesYes
Tool callingYesYes
Released2026-02-042026-09-22
Retirement——

Cost calculator

FAQ

Which is cheaper, Claude Opus 4.6 or Claude Opus 5.5?

Claude Opus 5.5 is 20% cheaper than Claude Opus 4.6 on a typical 3:1 input/output mix.

Claude Opus 4.6 vs Claude Opus 5.5: which has a bigger context window?

Claude Opus 4.6: 1,000,000 tokens. Claude Opus 5.5: 1,000,000 tokens.

How much would 1 million requests cost?

At 2,000 input + 500 output tokens per request: Claude Opus 4.6 ≈ $22,500, Claude Opus 5.5 ≈ $18,000.

More comparisons

Claude Opus 4.6 vs GLM 5.3 PrimeClaude Opus 4.6 vs Qwen3.8 Max PrimeClaude Opus 4.6 vs Command A+Claude Opus 4.6 vs GPT-6 Luna ProClaude Opus 4.6 vs GPT-6 LunaClaude Opus 4.6 vs GPT-6 Sol ProClaude Opus 4.6 vs GPT-6 SolClaude Opus 4.6 vs MiMo-V2.6-Pro-UltraSpeedClaude Opus 4.6 vs MiMo-V2.6-FlashClaude Opus 4.6 vs Grok 4.7Claude Opus 4.6 vs Qwen3.8 Omni FlashClaude Opus 4.6 vs GLM 5.3 FlashXClaude Opus 4.6 vs DeepSeek V4.1 FlashClaude Opus 4.6 vs GPT-6 AstraClaude Opus 4.6 vs GPT-6 Astra ProClaude Opus 4.6 vs Qwen3.8 Max (0902)Claude Opus 5.5 vs GLM 5.3 PrimeClaude Opus 5.5 vs Qwen3.8 Max PrimeClaude Opus 5.5 vs Command A+Claude Opus 5.5 vs GPT-6 Luna ProClaude Opus 5.5 vs GPT-6 LunaClaude Opus 5.5 vs GPT-6 Sol ProClaude Opus 5.5 vs GPT-6 SolClaude Opus 5.5 vs MiMo-V2.6-Pro-UltraSpeed