Which is cheaper for input tokens: Anthropic: Claude Opus 4.5 or OpenAI: GPT-4o (extended)?
Anthropic: Claude Opus 4.5 is cheaper or equal on input token cost by $1.00 per 1M tokens.
Head-to-Head Pricing Benchmark
Anthropic: Claude Opus 4.5 vs OpenAI: GPT-4o (extended)
Side-by-side pricing and context window comparison for production model selection.
Input delta: $1.00Output delta: $7.00Monthly delta: $300
Default Recommendation (120M input + 60M output)
OpenAI: GPT-4o (extended) is lower-cost for the default monthly workload scenario.
Adjust the workload in the calculator below to see a live recommendation for your usage.
| Metric | Anthropic: Claude Opus 4.5 | OpenAI: GPT-4o (extended) |
|---|---|---|
| Developer | anthropic | openai |
| Context Window | 200,000 | 128,000 |
| Input Cost / 1M Tokens | $5.00 | $6.00 |
| Output Cost / 1M Tokens | $25.00 | $18.00 |
| Projected Monthly Cost | $2,100 | $1,800 |
| Vision | ✅ Yes | ✅ Yes |
| Tool Calling | ✅ Yes | ✅ Yes |
| Structured Output | ✅ Yes | ✅ Yes |
| Reasoning | ✅ Yes | ❌ No |
| MMLU Score | 69.6 | N/A |
| GPQA | 48.9 | N/A |
Price History
Anthropic: Claude Opus 4.5 Pricing Trend
Input / 1M tokens0.0%Output / 1M tokens0.0%
Mar 7 — Mar 11
Current Input / 1M
$5.00
Current Output / 1M
$25.00
Price History
OpenAI: GPT-4o (extended) Pricing Trend
Input / 1M tokens0.0%Output / 1M tokens0.0%
Mar 7 — Mar 11
Current Input / 1M
$6.00
Current Output / 1M
$18.00
Cost Calculator
Adjust your workload to see projected monthly costs.
01.0B
0500M
Anthropic: Claude Opus 4.5
$2,100
per month
OpenAI: GPT-4o (extended)
$1,800
per month
Lower costLive Recommendation
OpenAI: GPT-4o (extended) is lower-cost at 120M input + 60M output tokens/month.
OpenAI: GPT-4o (extended) saves $300/mo at this workload
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FAQ
Common questions for Anthropic: Claude Opus 4.5 vs OpenAI: GPT-4o (extended) pricing decisions.
Which is cheaper for output tokens: Anthropic: Claude Opus 4.5 or OpenAI: GPT-4o (extended)?
OpenAI: GPT-4o (extended) is cheaper on output token cost by $7.00 per 1M tokens.
What is the projected monthly cost difference between Anthropic: Claude Opus 4.5 and OpenAI: GPT-4o (extended)?
$300 difference for the default scenario (120M input + 60M output tokens/month).
How should I choose between Anthropic: Claude Opus 4.5 and OpenAI: GPT-4o (extended)?
Use this page to compare context window and token pricing, then open each model page to evaluate additional alternatives and monthly workload fit.