In this head-to-head showdown, DeepSeek V4 Flash Latest is more budget-friendly at $0.121/1M per 1M output tokens. Review the complete breakdown below to determine which model best fits your performance and budget requirements.
3 benchmarks evaluated across capability, speed, and cost
Auto-discovered from OpenRouter (~deepseek/deepseek-v4-flash-latest). Preview until a second source matches.
OpenAI 5.6 fast/cheap tier. Official API $0.20/$1.20 per 1M after the Jul 30 80% Luna cut.
Single model data
No latency data
$0.12060000000000001 / 1M output
Relative percentile scores computed across all active models in the benchmark catalog.
Comparing top standard models across 6 key capability dimensions. Tap any spoke or dot to inspect.
Category wins across reasoning intelligence, generation speed, and token cost.
Preference Elo, Coding proficiency, SWE-bench & LiveBench accuracy
Generation throughput and time to first token responsiveness
Cost per million tokens and max context window length
| Benchmark | DeepSeek V4 Flash Latest | GPT-5.6 Luna | Difference / Delta |
|---|---|---|---|
| Preference Elo | — | — | |
| Coding Elo | — | — | |
| LiveBench | — | — | |
| SWE-bench | — | — | |
| GPQA Diamond | — | — | |
| Time to first token | — | — | |
| Output speed | — | 188 tok/s | — |
| Input price | $0.06/1M | $0.1/1M | DeepSeek V4 Flash Latest+$0.04/1M |
| Output price | $0.121/1M | $0.6/1M | DeepSeek V4 Flash Latest+$0.479/1M |
| Context window | DeepSeek V4 Flash Latest+261k |
Simulate monthly production API costs in USD (US Dollar).
DeepSeek V4 Flash Latest is estimated to save $8.58/month ($103/year).
Need SWE-bench on both sides.
Lower output list price ($0.121/1M).
Need TTFT on both sides.
Larger window (1.3M).
GPT-5.6 Luna is the side marked multimodal in the catalog.
| Target Workload | Recommended Pick | Evaluation Rationale |
|---|---|---|
| Repo / coding agents | insufficient data | Need SWE-bench on both sides. |
| High-volume chat | DeepSeek V4 Flash Latest | Lower output list price ($0.121/1M). |
| Voice / low-latency UI | insufficient data | Need TTFT on both sides. |
| Long-document RAG | DeepSeek V4 Flash Latest | Larger window (1.3M). |
| Screenshots / vision | GPT-5.6 Luna | GPT-5.6 Luna is the side marked multimodal in the catalog. |
Luna is the OpenAI fast/cheap 5.6 SKU after Jul 30. It is not Sol. Sort by price and TTFT, not Elo.
High-volume agents that cannot pay Sol. Compare to Luna before you assume the new cheap SKU wins.
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Verified Head-to-Head Telemetry
