OpenAI vs Anthropic Pricing 2026:
GPT-5.4 vs Claude 4.6 Full Comparison
Complete pricing comparison between OpenAI (GPT-5.4 family) and Anthropic (Claude 4.6 family) across all tiers, context windows, batch pricing, and caching. Includes which provider wins by use case. Last verified: 2026-04-01.
OpenAI is cheaper at every standard price tier — GPT-5.4 nano ($0.20/M) vs Haiku ($1.00/M), GPT-5.4 ($2.50/M) vs Sonnet ($3.00/M). However, Anthropic's prompt caching at $0.30/M (Sonnet) and $0.10/M (Haiku) can flip the cost equation for cached-context apps. Anthropic leads on coding benchmarks and instruction-following; OpenAI leads on ecosystem breadth, multilingual, and function-calling tooling.
Model Tier Comparison — Standard Pricing
| Tier | OpenAI Model | Input / 1M | Output / 1M | Anthropic Model | Input / 1M | Output / 1M |
|---|---|---|---|---|---|---|
| Budget | GPT-5.4 nano | $0.20 | $1.25 | Claude Haiku 4.5 | $1.00 | $5.00 |
| Mid | GPT-5.4 mini | $0.75 | $4.50 | Claude Sonnet 4.6 | $3.00 | $15.00 |
| Premium | GPT-5.4 | $2.50 | $15.00 | Claude Opus 4.6 | $5.00 | $25.00 |
OpenAI cheaper on input at every tier. Anthropic Opus is cheaper on output vs GPT-5.4 ($25 vs $15 — wait, GPT-5.4 output is $15 vs Opus $25, so OpenAI wins output too). Note: Claude Sonnet/Opus context = 1M tokens; Claude Haiku = 200K. GPT-5.4 context = 1M; GPT-5.4 mini/nano = 128K.
Batch API Pricing Comparison
| Model | Batch Input / 1M | Batch Output / 1M | Savings vs Standard |
|---|---|---|---|
| GPT-5.4 nano (batch) | $0.10 | $0.625 | 50% off standard |
| GPT-5.4 mini (batch) | $0.375 | $2.25 | 50% off standard |
| GPT-5.4 (batch) | $1.25 | $7.50 | 50% off standard |
| Claude Haiku 4.5 (batch) | $0.50 | $2.50 | 50% off standard |
| Claude Sonnet 4.6 (batch) | $1.50 | $7.50 | 50% off standard |
| Claude Opus 4.6 (batch) | $2.50 | $12.50 | 50% off standard |
Prompt Caching: Anthropic's Unique Advantage
| Claude Model | Cache Write (5m) | Cache Write (1h) | Cache Read | vs Standard Input |
|---|---|---|---|---|
| Claude Haiku 4.5 | $1.25 | $2.00 | $0.10 | 90% cheaper than $1.00 input |
| Claude Sonnet 4.6 | $3.75 | $6.00 | $0.30 | 90% cheaper than $3.00 input |
| Claude Opus 4.6 | $6.25 | $10.00 | $0.50 | 90% cheaper than $5.00 input |
OpenAI does not offer an equivalent prompt caching mechanism at these rates. For applications that repeatedly send large context (system prompts, knowledge bases, document corpora), Anthropic's caching makes Claude significantly cheaper in practice, even though list prices are higher.
Context Window Comparison
| Model | Context Window | Pricing Note |
|---|---|---|
| GPT-5.4 | 1M tokens | Standard pricing under 270k token threshold — verify for very large contexts |
| GPT-5.4 mini | 128K tokens | Hard 128K limit |
| GPT-5.4 nano | 128K tokens | Hard 128K limit |
| Claude Opus 4.6 | 1M tokens | Full 1M at standard rate — no documented pricing threshold |
| Claude Sonnet 4.6 | 1M tokens | Full 1M at standard rate |
| Claude Haiku 4.5 | 200K tokens | 200K limit — larger than GPT-5.4 mini/nano |
Winner by Use Case
Which Provider Should You Choose?
Choose OpenAI if:
- You want the lowest list price across all tiers
- You need the OpenAI ecosystem: Assistants API, fine-tuning, Azure OpenAI, DALL·E integration
- You're building with frameworks that default to OpenAI (AutoGPT, many LangChain templates)
- Multilingual performance is critical
- Your context fits within 128K (for nano/mini tiers)
- You need the cheapest Batch API: GPT-5.4 nano batch at $0.10/M input
Choose Anthropic if:
- Coding quality is the primary criterion — Claude Sonnet leads on SWE-bench
- You have large, repeated system prompts or document contexts — caching saves 80–90%
- You're building agentic systems requiring reliable multi-step instruction following
- You need 200K+ context at mid-tier pricing (Haiku 4.5) — GPT-5.4 mini only goes to 128K
- Safety/Constitutional AI approach aligns with your product requirements
- Your team prefers working with Anthropic's Messages API structure
Frequently Asked Questions
Is OpenAI cheaper than Anthropic in 2026?
At standard list prices, yes — GPT-5.4 ($2.50/M) vs Claude Sonnet 4.6 ($3.00/M), and GPT-5.4 nano ($0.20/M) vs Claude Haiku 4.5 ($1.00/M). However, with Anthropic's prompt caching active, Claude can be significantly cheaper for cached-context workloads. For batch processing, OpenAI also wins on input cost.
Which is better for coding?
Claude Sonnet 4.6 consistently leads on coding benchmarks (SWE-bench and similar) in the mid-range tier. For the budget tier, GPT-5.4 nano at $0.20/M is substantially cheaper for code tasks that don't require complex reasoning.
Can I switch between OpenAI and Anthropic?
Yes, with moderate engineering effort. The API formats differ (OpenAI chat completions vs Anthropic Messages API), but frameworks like LangChain, LlamaIndex, and LiteLLM abstract both. A migration typically takes 1–3 days for a production application.
Do both support vision / multimodal input?
Both GPT-5.4 and Claude Sonnet/Opus 4.6 support image input. Image pricing varies by resolution and is charged in addition to text token pricing. Check each provider's current documentation for image pricing specifics.
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