head-to-head · model vs model
Claude Sonnet 4.5 vs DeepSeek V4 Flash
Live matchup data for Claude Sonnet 4.5 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 Jul 2, 2026 · Δ vs ≥7d prior
share of openrouter tokens
as of Jul 7, 2026 · Δ vs ≥7d prior
usage share — openrouter model rankings
Usage crossover
current leader: DeepSeek V4 Flash
source: OpenRouter model rankings · daily · 90d · ○ 1 lead change
through Jul 7, 2026
side by side
Spec & pricing
| Spec | Claude Sonnet 4.5 | DeepSeek V4 Flash |
|---|---|---|
| Vendor | Anthropic | DeepSeek |
| Homepage | openrouter.ai | openrouter.ai |
| Context window | 1M tokens | 1M tokens |
| Input price | $3.00/MTok | $0.09/MTok |
| Output price | $15.00/MTok | $0.18/MTok |
| Cache read | $0.3/MTok | $0.018/MTok |
| Price as of | Jul 8, 2026 · openrouter | Jul 8, 2026 · openrouter |
sources: provider pages · OpenRouter · GitHub · package registries
— = not tracked / not applicable
head to head
Benchmarks
| Benchmark | Claude Sonnet 4.5 | DeepSeek V4 Flash | Source |
|---|---|---|---|
| aa-agentic-index | 24.6 index— · anthropic/claude-sonnet-4.5 | 31.1 index— · deepseek/deepseek-v4-flash | openrouter.ai |
| aa-coding-index | 52.1 index— · anthropic/claude-sonnet-4.5 | 56.2 index— · deepseek/deepseek-v4-flash | openrouter.ai |
| aa-intelligence-index | 36.4 index— · anthropic/claude-sonnet-4.5 | 40.3 index— · deepseek/deepseek-v4-flash | openrouter.ai |
| SWE-bench Verified | 74.8%Nov 3 · sonar foundation agent claude sonnet 4 5 | — | github.com |
best tracked score per benchmark · scores are not directly comparable across benchmarks
sources linked per row
community pulse
Reddit sentiment
| Signal | Claude Sonnet 4.5 | 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 Claude Sonnet 4.5 more used than DeepSeek V4 Flash?
- As of Jul 7, 2026, Claude Sonnet 4.5 shows 0.2% of OpenRouter token volume and DeepSeek V4 Flash shows 10.3% of OpenRouter token volume. The chart above tracks the full daily series with every lead change marked.
- How does Claude Sonnet 4.5 pricing compare to DeepSeek V4 Flash?
- Claude Sonnet 4.5 runs $3.00 per million input tokens and $15.00 per million output tokens (as of Jul 8, 2026). DeepSeek V4 Flash runs $0.09 per million input tokens and $0.18 per million output tokens (as of Jul 8, 2026). Full plan and per-token detail is in the spec table above, each with its source and capture date.
- How do Claude Sonnet 4.5 and DeepSeek V4 Flash score on coding benchmarks?
- On aa-agentic-index, Claude Sonnet 4.5 scores 24.6 index (—) and DeepSeek V4 Flash scores 31.1 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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