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Alternatives to GPT-5.6 Terra

For summarising documents cheaply, GPT-5.6 Terra scores 60 and costs $11.60 per 1,000 summaries. Here’s what beats it on price, on quality, or on privacy.

Overall 60$4.50 / 1M
95% similarOpen weightsGLM-5.3Z.ai
Overall61+1
Blended / 1M$2.15−52%
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GLM-5.3 vs GPT-5.6 TerraOverall+1Coding+14Writing+17Support+10Value+4Context1M
93% similarOpen weightsKimi K3Moonshot AI
Overall65+5
Blended / 1M$6.00+33%
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Kimi K3 vs GPT-5.6 TerraOverall+5Coding+20Writing+16Support+16Value+2Context1M
93% similarQwen3.8 MaxAlibaba (Qwen)
Overall66+6
Blended / 1M$3.00−33%
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Qwen3.8 Max vs GPT-5.6 TerraOverall+6Coding+21Writing+22Support+15Value+8Context1M
92% similarClaude Sonnet 5Anthropic
Overall53−7
Blended / 1M$4.00−11%
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Claude Sonnet 5 vs GPT-5.6 TerraOverall−7Coding+1Writing±0Support−1Value−7Context1M
91% similarGPT-6 SolOpenAI
Overall52−8
Blended / 1M$4.00−11%
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GPT-6 Sol vs GPT-5.6 TerraOverall−8Coding+8Writing−17Support−20Value−8Context1.1M
88% similarOpen weightsDeepSeek V4 ProDeepSeek
Overall53−7
Blended / 1M$1.98−56%
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DeepSeek V4 Pro vs GPT-5.6 TerraOverall−7Coding+2Writing+8Support+2Value−3Context1M
87% similarMuse Spark 1.3Meta
Overall68+8
Blended / 1M$2.00−56%
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Muse Spark 1.3 vs GPT-5.6 TerraOverall+8Coding+21Writing+17Support+14Value+12Context1M
87% similarGPT-5.6 SolOpenAI
Overall68+8
Blended / 1M$8.00+78%
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GPT-5.6 Sol vs GPT-5.6 TerraOverall+8Coding+13Writing+14Support+9Value+4Context1.1M
86% similarGPT-6.1 SolOpenAI
Overall74+14
Blended / 1M$4.00−11%
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GPT-6.1 Sol vs GPT-5.6 TerraOverall+14Coding+24Writing+5Support+1Value+14Context1.1M

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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