Data points: 83
Model compare
The readout for DeepSeek V3.1 Terminus and GPT-5, before the detailed comparison sheet.
Weighted outcome: DeepSeek V3.1 Terminus. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.
Decision read
DeepSeek V3.1 Terminus
DeepSeek V3.1 Terminus has the higher weighted result; Model A / B score 57.3 to 42.7.
Evidence depth
83 data points
Includes 8 benchmark rows, 0 audit samples, and 8 provider examples.
Selection signal
Start with DeepSeek V3.1 Terminus
The charts below split 16 high-signal samples across speed, scores, and audit health.
Switch either side of this report to compare another model with the same LMSpeed data pipeline.
Select a different model to open a new comparison URL.
This report only uses LMSpeed data for DeepSeek V3.1 Terminus and GPT-5: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Model compare | DeepSeek V3.1 Terminus | GPT-5 |
|---|---|---|
| Overall leader | Leading | Contender |
| Weighted overall score | 57.3 pts | 42.7 pts |
| Benchmark category leads | 2 categories | 1 categories |
| Operational advantages | First-token latency | Cheapest input price, Average speed, Free providers, Provider coverage |
| Context window | 163.8K tokens | 400K tokens |
| Max output | 32.8K tokens | 128K tokens |
| Modalities | Input Text Output Text | Input Text |
The overall result weights benchmark capability categories at 80% and price, API speed/latency, and availability at 20%. Recent test volume does not affect the winner, and missing benchmark categories are excluded.
| Model compare | DeepSeek V3.1 Terminus | GPT-5 |
|---|---|---|
| Developer | DeepSeek | OpenAI |
| Released | Sep 2025 | Aug 2025 |
| Parameters | No data | No data |
| Tokenizer | DeepSeek | GPT |
| Knowledge cutoff | 2025-03-31 | 2024-09-30 |
| OpenRouter ID | deepseek/deepseek-v3.1-terminus | openai/gpt-5 |
| References | No data | No data |
This report only uses LMSpeed data for DeepSeek V3.1 Terminus and GPT-5: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
DeepSeek V3.1 Terminus
DeepSeek V3.1 Terminus is stronger in benchmark categories (Coding, Reasoning) and operational dimensions (First-token latency).
GPT-5
GPT-5 is stronger in benchmark categories (Math) and operational dimensions (Cheapest input price, Average speed, Free providers, Provider coverage).
Third-party benchmark profile synced into LMSpeed; only metrics available for both models are shown.
Compare benchmark category scores on a 0-100 scale. Select a category to inspect the gap.
Avg. score
DeepSeek V3.1 Terminus
54.2
Avg. score
GPT-5
51.9
GPT-5
DeepSeek V3.1 Terminus leads by 6.3
DeepSeek V3.1 Terminus leads by 2.5
GPT-5
GPT-5 leads by 8.9
No data
No data
GPT-5
Metric-level scores with benchmark source, rank depth, confidence, error, and evaluation date where available.
DeepSeek V3.1 Terminus
winner$0.453/M
Rank #37/162 · confidence 4
GPT-5
$3.44/M
Rank #117/162 · confidence 4
DeepSeek V3.1 Terminus
winner$1.00/M
Rank #40/162 · confidence 4
GPT-5
$10.00/M
Rank #120/162 · confidence 4
DeepSeek V3.1 Terminus
winner$0.270/M
Rank #42/162 · confidence 4
GPT-5
$1.25/M
Rank #107/162 · confidence 4
DeepSeek V3.1 Terminus
winner83.6%
Rank #36/125 · confidence 4
GPT-5
80.6%
Rank #57/125 · confidence 4
DeepSeek V3.1 Terminus
winner75.1%
Rank #95/188 · confidence 4
GPT-5
67.3%
Rank #121/188 · confidence 4
DeepSeek V3.1 Terminus
winner8.4%
Rank #101/187 · confidence 4
GPT-5
5.4%
Rank #132/187 · confidence 4
DeepSeek V3.1 Terminus
52.9%
Rank #55/115 · confidence 4
GPT-5
winner55.8%
Rank #49/115 · confidence 4
DeepSeek V3.1 Terminus
32.1%
Rank #127/185 · confidence 4
GPT-5
winner38.8%
Rank #83/185 · confidence 4
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | DeepSeek V3.1 Terminus | GPT-5 |
|---|---|---|
| No completed audits are available from shared providers yet. | ||
Speed aggregates and input/output pricing share each provider row for real API selection and migration cost checks.
| Provider | DeepSeek V3.1 Terminus | GPT-5 |
|---|---|---|
10 tests | DeepSeek V3.1 Terminus speed / latency 23 tok/s / 1008ms input / output No data | GPT-5 speed / latency 38 tok/s / 15844ms input / output No data |
5 tests | DeepSeek V3.1 Terminus speed / latency 45 tok/s / 2125ms input / output No data | GPT-5 speed / latency N/A / N/A input / output No data |
5 tests | DeepSeek V3.1 Terminus speed / latency N/A / N/A input / output No data | GPT-5 speed / latency 46 tok/s / 6577ms input / output No data |
5 tests | DeepSeek V3.1 Terminus speed / latency N/A / N/A input / output No data | GPT-5 speed / latency 169 tok/s / 1894ms input / output No data |
0 tests | DeepSeek V3.1 Terminus speed / latency N/A / N/A input / output No data | GPT-5 speed / latency N/A / N/A input / output No data |
DeepSeek V3.1 Terminus deepseek-v3.1-terminus speed / latency No data input / output $0.018/M/$0.068/M | GPT-5 gpt-5 speed / latency No data input / output $0.086/M | |
DeepSeek V3.1 Terminus deepseek-v3.1-terminus speed / latency No data input / output $0/request | GPT-5 gpt-5-all speed / latency No data input / output $0/request | |
DeepSeek V3.1 Terminus deepseek-v3.1-terminus speed / latency No data input / output $0.110/M/$0.329/M | GPT-5 gpt-5-chat speed / latency No data input / output $1.28/M |
Weighted outcome: DeepSeek V3.1 Terminus. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.
Output
| Features | Text inputText outputTool callingStructured outputsJSON modeReasoning | Text inputImage inputFile inputText outputTool callingStructured outputsJSON modeReasoning |
|---|
