OpenAI vs Claude for RAG Pipelines: Cost Comparison
Compare OpenAI and Claude on the same workload and see which is cheaper.
Shared workload
Cost comparison
Side-by-side metrics
| Metric | OpenAI | Claude |
|---|---|---|
| Monthly cost | $75.00 | $135.00 |
| Yearly cost | $900.00 | $1,620.00 |
| Daily cost | $2.50 | $4.50 |
| Yearly saving | $720.00 saved | — |
OpenAI
(2,000 × $1.25 + 500 × $10) / 1M × 10,000 req × 12
Enabling Prompt Cache with a 60% hit ratio could save $162.00/yr (18% reduction). Fix your system prompt at the start of every request and reuse it across calls.
Switching to GPT-5 Mini cuts estimated cost by 80% — saving $720.00/yr. Run an A/B test against a representative eval set before changing production traffic.
Cost breakdown
| Item | Monthly | Yearly |
|---|---|---|
| Input spend (2,000 tok/req × 10,000 req × $1.25/MTok) | $25.00 | $300.00 |
| Output spend (500 tok/req × 10,000 req × $10/MTok) | $50.00 | $600.00 |
| Total monthly spend | $75.00 | $900.00 |
Comparison
| Option | Monthly | Yearly |
|---|---|---|
| OpenAI GPT-5currentcheapest | $75.00 | $900.00 |
| Claude Claude Sonnet 4.6 | $135.00 | $1,620.00 |
| Gemini Gemini 2.5 Pro | $75.00 | $900.00 |
Pricing sources
Last verified 2026-06-30 · openai.com/api/pricing openai.com/api/pricing · platform.claude.com/docs/about-claude/pricing platform.claude.com/docs/about-claude/pricing · ai.google.dev/gemini-api/docs/pricing ai.google.dev/gemini-api/docs/pricing
Industry Benchmark
Pricing sources
Last verified 2026-06-30 · openai.com/api/pricing openai.com/api/pricing · platform.claude.com/docs/about-claude/pricing platform.claude.com/docs/about-claude/pricing · ai.google.dev/gemini-api/docs/pricing ai.google.dev/gemini-api/docs/pricing
Claude
(2,000 × $3 + 500 × $15) / 1M × 10,000 req × 12
Enabling Prompt Cache with a 60% hit ratio could save $388.80/yr (24% reduction). Fix your system prompt at the start of every request and reuse it across calls.
Cost breakdown
| Item | Monthly | Yearly |
|---|---|---|
| Input spend (2,000 tok/req × 10,000 req × $3/MTok) | $60.00 | $720.00 |
| Output spend (500 tok/req × 10,000 req × $15/MTok) | $75.00 | $900.00 |
| Total monthly spend | $135.00 | $1,620.00 |
Comparison
| Option | Monthly | Yearly |
|---|---|---|
| OpenAI GPT-5cheapest | $75.00 | $900.00 |
| Claude Claude Sonnet 4.6current | $135.00 | $1,620.00 |
| Gemini Gemini 2.5 Pro | $75.00 | $900.00 |
Pricing sources
Last verified 2026-06-30 · openai.com/api/pricing openai.com/api/pricing · platform.claude.com/docs/about-claude/pricing platform.claude.com/docs/about-claude/pricing · ai.google.dev/gemini-api/docs/pricing ai.google.dev/gemini-api/docs/pricing
Industry Benchmark
Pricing sources
Last verified 2026-06-30 · openai.com/api/pricing openai.com/api/pricing · platform.claude.com/docs/about-claude/pricing platform.claude.com/docs/about-claude/pricing · ai.google.dev/gemini-api/docs/pricing ai.google.dev/gemini-api/docs/pricing
Pricing model differences
OpenAI and Claude price input and output tokens at different rates and offer different caching and batch discounts. For output-heavy workloads the output token price dominates; for context-heavy workloads, cached-input pricing matters most. Understanding this split is critical: a chatbot generating long responses will be driven by output cost, while a RAG pipeline with large context windows will be driven by input cost.
When to choose each
Pick the provider whose pricing best fits your token ratio and volume. If your workload is output-heavy (code generation, long-form writing), compare output rates directly. If your workload reuses long system prompts or few-shot examples, compare cached-input pricing — a provider with aggressive caching discounts can be 5-10× cheaper on the input side. Use the shared input above to model your real workload, then check the cheaper option and the annual saving before committing.
Common switching scenarios
Teams commonly switch providers when: (1) they need to cut costs without sacrificing quality — moving from a flagship model to a competitor's mid-tier can save 60-80% while maintaining acceptable output quality; (2) a specific benchmark matters — one provider may lead in coding while another leads in reasoning; (3) context window requirements change — some providers offer 1M+ tokens natively while others require workarounds. Use our Model Migration Calculator to estimate the full switching cost including engineering time.
Beyond price: quality and latency
Cost is only one dimension of an LLM decision. Response latency (time-to-first-token and tokens-per-second), output quality on your specific task, and reliability (uptime, rate limits) all matter. A model that's 30% cheaper but 50% slower may cost more when you factor in user wait time or throughput requirements. Check our LLM Leaderboard for benchmark comparisons, and run A/B tests on your actual prompts before committing to a provider switch.
Compare these models on coding, reasoning, and agentic benchmarks → LLM Leaderboard
Frequently asked questions
Which is cheaper, OpenAI or Claude?▾
It depends on your token mix and volume. Enter your workload above — the calculator computes both and shows the cheaper option with the exact yearly saving.
How do the pricing models differ?▾
Each provider prices input and output tokens differently and offers different cached-input and batch discounts. The side-by-side breakdown makes the difference explicit.
Is this based on official pricing?▾
It uses comparable-tier placeholder pricing from a versioned JSON config. Verify against each provider's official price page; the footer shows the data version.
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