head-to-head · model vs model
GPT-5 vs DeepSeek V4 Flash
Live matchup data for GPT-5 and DeepSeek V4 Flash: OpenRouter usage, pricing, benchmark scores, and community sentiment, refreshed daily. No verdicts — read the tape.
share of openrouter tokens
as of Aug 20, 2026 · Δ vs ≥7d prior
usage share — openrouter model rankings
Usage crossover
current leader: DeepSeek V4 Flash
source: OpenRouter model rankings · daily · 90d
through Aug 20, 2026
side by side
Spec & pricing
| Spec | GPT-5 | DeepSeek V4 Flash |
|---|---|---|
| Vendor | OpenAI | DeepSeek |
| Homepage | openrouter.ai | openrouter.ai |
| Context window | 400K tokens | 1.3M tokens |
| Input price | $1.25/MTok | $0.14/MTok |
| Output price | $10.00/MTok | $0.28/MTok |
| Cache read | $0.13/MTok | $0.028/MTok |
| Price as of | Aug 21, 2026 · openrouter | Aug 21, 2026 · openrouter |
sources: provider pages · OpenRouter · GitHub · package registries
— = not tracked / not applicable
head to head
Benchmarks
| Benchmark | GPT-5 | DeepSeek V4 Flash | Source |
|---|---|---|---|
| aa-agentic-index | 25.7 index— · openai/gpt-5 | 45.7 index— · deepseek/deepseek-v4-flash-0731 | openrouter.ai |
| aa-coding-index | 37.8 index— · openai/gpt-5:batch | 69.1 index— · deepseek/deepseek-v4-flash-0731 | openrouter.ai |
| aa-intelligence-index | 34.7 index— · openai/gpt-5:batch | 49.9 index— · deepseek/deepseek-v4-flash-0731 | openrouter.ai |
| Aider Polyglot | 88%Aug 23 · gpt-5 (high) | — | github.com |
best tracked score per benchmark · scores are not directly comparable across benchmarks
sources linked per row
community pulse
Reddit sentiment
| Signal | GPT-5 | DeepSeek V4 Flash |
|---|---|---|
sentiment feed pending — Reddit pulse lands with the daily crawl | ||
source: Reddit mentions, LLM-classified sentiment · trailing 30d
awaiting first crawl
faq
Frequently asked
- Is GPT-5 more used than DeepSeek V4 Flash?
- As of Aug 20, 2026, GPT-5 shows 0.3% of OpenRouter token volume and DeepSeek V4 Flash shows 22.2% of OpenRouter token volume. The chart above tracks the full daily series with every lead change marked.
- How does GPT-5 pricing compare to DeepSeek V4 Flash?
- GPT-5 runs $1.25 per million input tokens and $10.00 per million output tokens (as of Aug 21, 2026). DeepSeek V4 Flash runs $0.14 per million input tokens and $0.28 per million output tokens (as of Aug 21, 2026). Full plan and per-token detail is in the spec table above, each with its source and capture date.
- How do GPT-5 and DeepSeek V4 Flash score on coding benchmarks?
- On aa-agentic-index, GPT-5 scores 25.7 index (—) and DeepSeek V4 Flash scores 45.7 index (—). All tracked results and their sources are in the benchmark table above.
- Where does this comparison data come from?
- OpenRouter public rankings (usage), provider pricing pages (plans and per-token prices), GitHub and package registries (adoption), public benchmark leaderboards, and Reddit (sentiment). Every stored datum keeps its source URL, and the tape refreshes daily. The Token Tape publishes the data without declaring a winner.
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