DeepSeek V4.1 Flash vs GPT-5.6 Terra: Release Comparison
Comparison of the DeepSeek V4.1 Flash and GPT-5.6 Terra releases: 2 and 6 models respectively, each with different intelligence, performance, and pricing characteristics. Below is a comparison of the key metrics across all 8 models.
- For intelligence, GPT-5.6 Terra scores highest: GPT-5.6 Terra (max) at 42, against DeepSeek V4.1 Flash (Reasoning, Max Effort) at 39 for DeepSeek V4.1 Flash.
- For output speed, DeepSeek V4.1 Flash is fastest: DeepSeek V4.1 Flash (Non-Reasoning) at 243 t/s, against GPT-5.6 Terra (max) at 87 t/s for GPT-5.6 Terra.
- For cost per task, GPT-5.6 Terra is cheapest: GPT-5.6 Terra (Non-reasoning) at $0.14, against DeepSeek V4.1 Flash (Non-Reasoning) at $0.15 for DeepSeek V4.1 Flash.
Intelligence
Artificial Analysis Intelligence Index
Intelligence Index vs. Cost per Intelligence Index Task
Cost per Task (USD, Log Scale)
Cost
Cost per Intelligence Index Task
Speed & Latency
Output Speed
Capability Scores
Capability Indexes
Incorporates 7 evaluations: AA-Omniscience, GDPval-AA v2.1, AA-Briefcase v1.1, Humanity's Last Exam, AutomationBench-AA, AA-LCR v1.1, GDP.pdf · Higher is better
Incorporates 6 evaluations: AA-Omniscience, GDPval-AA v2.1, AA-Briefcase v1.1, AutomationBench-AA, AA-LCR v1.1, GDP.pdf · Higher is better
Incorporates 7 evaluations: AA-Omniscience, GDPval-AA v2.1, AA-Briefcase v1.1, Humanity's Last Exam, AA-LCR v1.1, GDP.pdf, AutomationBench-AA · Higher is better
Incorporates 6 evaluations: AA-Omniscience, GDPval-AA v2.1, AA-Briefcase v1.1, MLCR-AA, Humanity's Last Exam, AutomationBench-AA · Higher is better
Incorporates 6 evaluations: AA-Omniscience, Humanity's Last Exam, CritPt, GDPval-AA v2.1, AA-Briefcase v1.1, Terminal-Bench 4.0 · Higher is better
Incorporates 5 evaluations: AA-Omniscience, Humanity's Last Exam, GDPval-AA v2.1, AA-Briefcase v1.1, AA-LCR v1.1 · Higher is better
Further details
Input modality | Output modality | Weights | Provider Benchmarks | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| GPT-5.6 Terra (max) |  OpenAI | 42 | 41 | 47 | 41 | 40 | 43 | 45 | $1.40 | $1.7 | $2.00 | $12.00 | $0.20 | $2,501 | 39k | 26k | 122M | 87 | 211.09s | 211.09s | 216.85s | 446.03s | - | 1M | Jul 2026 | - | Yes | Supports: text and image | Supports: text | Not available | - |  | |
| DeepSeek V4.1 Flash (Reasoning, Max Effort) |  DeepSeek | 39 | 45 | 52 | 41 | 41 | 39 | 44 | $0.27 | $0.2 | $0.30 | $1.20 | $0.006 | $477 | 89k | 63k | 253M | 232 | 0.97s | 9.58s | 11.73s | 282.36s | 552B 16B active at inference time | 1M | Sep 2026 | - | Yes | Supports: text and image | Supports: text |    +15 | |||
| GPT-5.6 Terra (xhigh) | OpenAI | 38 | 40 | 44 | 40 | 38 | 38 | 44 | $0.63 | $1.7 | $2.00 | $12.00 | $0.20 | $1,187 | 20k | 12k | 52M | 83 | 30.97s | 30.97s | 36.99s | 249.31s | - | 1M | Jul 2026 | - | Yes | Supports: text and image | Supports: text | Not available | - |  | |
| GPT-5.6 Terra (high) | OpenAI | 34 | 37 | 40 | 37 | 34 | 34 | 42 | $0.34 | $1.7 | $2.00 | $12.00 | $0.20 | $768 | 11k | 5k | 33M | 76 | 3.47s | 3.47s | 10.03s | 142.89s | - | 1M | Jul 2026 | - | Yes | Supports: text and image | Supports: text | Not available | - | | |
| GPT-5.6 Terra (medium) | OpenAI | 30 | 32 | 34 | 34 | 31 | 31 | 37 | $0.18 | $1.7 | $2.00 | $12.00 | $0.20 | $447 | 5k | 2k | 17M | 82 | 2.14s | 2.14s | 8.25s | 66.52s | - | 1M | Jul 2026 | - | Yes | Supports: text and image | Supports: text | Not available | - | | |
| GPT-5.6 Terra (low) | OpenAI | 27 | 30 | 31 | 31 | 27 | 28 | 34 | $0.14 | $1.7 | $2.00 | $12.00 | $0.20 | $350 | 4k | 1k | 11M | 77 | 1.70s | 1.70s | 8.24s | 49.91s | - | 1M | Jul 2026 | - | Yes | Supports: text and image | Supports: text | Not available | - | | |
| DeepSeek V4.1 Flash (Non-Reasoning) | DeepSeek | 25 | 30 | 36 | 30 | - | 25 | 32 | $0.15 | $0.2 | $0.30 | $1.20 | $0.006 | $156 | 34k | 0 | 45M | 243 | 1.16s | 1.16s | 3.22s | 136.49s | 552B 16B active at inference time | 1M | Sep 2026 | - | No | Supports: text and image | Supports: text | | |||
| GPT-5.6 Terra (Non-reasoning) | OpenAI | 21 | 21 | 23 | 22 | - | 21 | 24 | $0.14 | $1.7 | $2.00 | $12.00 | $0.20 | $256 | 3k | 0 | 6M | 82 | 0.94s | 0.94s | 7.03s | 38.01s | - | 1M | Jul 2026 | - | No | Supports: text and image | Supports: text | Not available | - | | |