Quick Verdict
| Need | Better first pick | Why |
|---|---|---|
| Lowest raw API cost | Gemini | Flash-Lite, Flash, and 2.5 Pro usually undercut Claude tiers |
| Coding, prose, review | Claude | Sonnet and Opus often justify higher token rates when retries are expensive |
| Long context below 200K | Gemini 2.5 Pro | Strong price before the long-context tier applies |
| Claude-native quality | Claude Sonnet 5 | Cleaner default for teams already tuned around Claude behavior |
| Cheap routing | Gemini Flash or Flash-Lite | Much cheaper than Claude Haiku for simple tasks |
Use the chart and calculator above to model your own token volume. The table below is the normalized API view; for a broader route-by-provider view, see our AI API pricing comparison.
Pricing Table
| Provider | Model | Status | Input | Cached input | Output | Best fit |
|---|---|---|---|---|---|---|
| Gemini 2.5 Flash-Lite | Active | $0.10 | n/a | $0.40 | Cheapest Gemini utility calls | |
| Gemini 2.5 Flash | Active | $0.30 | $0.03 | $2.50 | Fast support, RAG, extraction, multimodal apps | |
| Gemini 2.5 Pro | Active | $1.25 | $0.125 | $10.00 | Lower-cost premium work below long-context tier | |
| Gemini 2.5 Pro (>200K) | Active | $2.50 | $0.25 | $15.00 | Large-context Pro workloads | |
| Gemini 3 Pro / 3.1 Pro | Preview | $2.00 | $0.20 | $12.00 | Premium Google route | |
| Anthropic | Claude Haiku 4.5 | Active | $1.00 | $0.10 | $5.00 | Claude utility calls |
| Anthropic | Claude Sonnet 5 | Active | $2.00 | $0.20 | $10.00 | Default Claude production route |
| Anthropic | Claude Opus 4.8 | Active | $5.00 | $0.50 | $25.00 | Premium Claude reasoning and coding |
| Anthropic | Claude Fable 5 / Mythos 5 | Preview | $10.00 | $1.00 | $50.00 | Frontier Claude tier, only when available and justified |
Gemini wins the spreadsheet in most common cases. Gemini 2.5 Pro is cheaper than Claude Sonnet 5 under normal context sizes, and Gemini Flash is far below Claude Haiku.
Claude wins when task quality is the real unit of cost. If Sonnet produces accepted code, cleaner analysis, or better customer-facing copy with fewer retries, the higher token price can be rational.
Routing Strategy
| Workload | First route | Escalation route |
|---|---|---|
| Intent classification | Gemini 2.5 Flash-Lite | Claude Haiku 4.5 |
| Support draft | Gemini 2.5 Flash | Claude Sonnet 5 |
| Premium customer answer | Gemini 2.5 Pro | Claude Sonnet 5 or Opus 4.8 |
| Coding triage | Gemini 2.5 Pro | Claude Sonnet 5 |
| Hard code review | Claude Sonnet 5 | Claude Opus 4.8 |
| Large-document RAG | Gemini 2.5 Pro tiered by context | Gemini 3 Pro or Claude Sonnet 5 |
Start with the cheapest model that passes evals. Escalate only when confidence, complexity, customer value, or failure risk justifies the higher price.
When to Choose Claude
Choose Claude when code quality, writing style, instruction following, or careful document reasoning matters more than raw token price. Claude also makes sense when your prompts, examples, and evals are already tuned around Sonnet or Opus behavior.
When to Choose Gemini
Choose Gemini when token price, long context, multimodal Google tooling, or Google Cloud procurement is the deciding factor. Flash and Flash-Lite are especially strong for high-volume work that can be checked automatically.
FAQ
Is Gemini cheaper than Claude?
Usually, yes. Gemini Flash, Flash-Lite, 2.5 Pro, and Gemini 3 Pro generally undercut comparable Claude tiers on listed token price.
Which Claude model should I compare with Gemini 3 Pro?
Compare Gemini 3 Pro with Claude Sonnet 5 and Claude Opus 4.8. Sonnet is the practical default; Opus is the premium Claude route.
Does long context make Gemini more expensive?
It can. Gemini 2.5 Pro has a higher >200K-token tier, so large prompts can erase some of the normal-tier savings.
Are Claude Fable 5 and Mythos 5 practical choices?
Only if access is available and the work justifies $10 input and $50 output per million tokens. Most teams should plan around Sonnet and Opus.
Bottom Line
Gemini is usually the lower-cost API stack. Claude remains compelling when quality, coding behavior, writing, or risk reduction beats token savings. The best design is a router: Gemini for scalable cheap work, Claude for tasks where evals prove the premium pays back.