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Alternatives to Claude Sonnet 5

For summarising documents cheaply, Claude Sonnet 5 scores 53 and costs $11.00 per 1,000 summaries. Here’s what beats it on price, on quality, or on privacy.

Overall 53$4.00 / 1M
99% similarGPT-6 SolOpenAI
Overall52−1
Blended / 1M$4.00±0%
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GPT-6 Sol vs Claude Sonnet 5Overall−1Coding+7Writing−17Support−19Value−1Context1.1M
95% similarOpen weightsDeepSeek V4 ProDeepSeek
Overall53±0
Blended / 1M$1.98−50%
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DeepSeek V4 Pro vs Claude Sonnet 5Overall±0Coding+1Writing+8Support+3Value+4Context1M
92% similarGPT-5.6 TerraOpenAI
Overall60+7
Blended / 1M$4.50+13%
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GPT-5.6 Terra vs Claude Sonnet 5Overall+7Coding−1Writing±0Support+1Value+7Context1.1M
88% similarOpen weightsGLM-5.3Z.ai
Overall61+8
Blended / 1M$2.15−46%
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GLM-5.3 vs Claude Sonnet 5Overall+8Coding+13Writing+17Support+11Value+11Context1M
85% similarOpen weightsKimi K3Moonshot AI
Overall65+12
Blended / 1M$6.00+50%
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Kimi K3 vs Claude Sonnet 5Overall+12Coding+19Writing+16Support+17Value+9Context1M
85% similarQwen3.8 MaxAlibaba (Qwen)
Overall66+13
Blended / 1M$3.00−25%
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Qwen3.8 Max vs Claude Sonnet 5Overall+13Coding+20Writing+22Support+16Value+15Context1M
81% similarGrok 4.7xAI
Overall35−18
Blended / 1M$3.00−25%
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Grok 4.7 vs Claude Sonnet 5Overall−18Coding−3Writing−17Support−25Value−17Context500K
80% similarMuse Spark 1.3Meta
Overall68+15
Blended / 1M$2.00−50%
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Muse Spark 1.3 vs Claude Sonnet 5Overall+15Coding+20Writing+17Support+15Value+19Context1M
80% similarMistral Large 4Mistral AI
Overall37−16
Blended / 1M$2.07−48%
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Mistral Large 4 vs Claude Sonnet 5Overall−16Coding±0Writing−19Support−10Value−13Context1M

Similarity is closeness in summarising documents cheaply score and in price. Cheaper means at least 30% less for within 5 points. Scores are provisional.

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