API cost decision in 10 seconds

OpenAI GPT Latest vs Claude Opus 4.6 (Fast)

Pick OpenAI GPT Latest when budget and context both matter.

Page updated:  Data confirmed:  Prices normalized to USD per 1M tokens Sample workload: 1M input + 500K output

Budget verdict

Pick OpenAI GPT Latest when budget and context both matter.

On the standard 1M input plus 500K output workload, OpenAI GPT Latest is estimated at $20 vs $105 for Claude Opus 4.6 (Fast), saving $85 (81% lower).

Cost-first pickOpenAI GPT Latest
Context-first pickOpenAI GPT Latest
Sample savings$8581%
10x traffic gap$850

OpenAI GPT Latest is cheaper on the standard workload and also has the larger context window. At 10x that traffic, the same price gap is about $850. Use the calculator below to replace the sample workload with your own token volume.

Cost sensitivity

Workload Sensitivity

Same prices, different token mixes.

OpenAI GPT Latest stays cheaper across input-heavy, balanced, and output-heavy sample workloads.

Workload shapeToken mixBetter pickOpenAI GPT LatestClaude Opus 4.6 (Fast)
Input-heavy / RAG5M input + 500K outputOpenAI GPT Latest$40$225
Balanced workload1M input + 1M outputOpenAI GPT Latest$35$180
Output-heavy chatbot1M input + 5M outputOpenAI GPT Latest$155$780
Cheaper input OpenAI GPT Latest $5 vs $30 / 1M

OpenAI GPT Latest is $25 cheaper per 1M input tokens (83.3% lower; 6x difference).

Cheaper output OpenAI GPT Latest $30 vs $150 / 1M

OpenAI GPT Latest is $120 cheaper per 1M output tokens (80% lower; 5x difference).

Larger context OpenAI GPT Latest 1.05M vs 1M

OpenAI GPT Latest has 50K more context (1.05x larger).

Sample workload OpenAI GPT Latest $20 vs $105

OpenAI GPT Latest is $85 cheaper on the standard workload (81% lower).

Estimate your workload cost

Your Workload Cost

Prices are normalized to USD per 1M tokens.
OpenAI GPT Latest Calculating… Estimated API cost
Claude Opus 4.6 (Fast) Calculating… Estimated API cost
Cheaper for this workload Calculating… Difference: calculating…

This estimate uses normalized public API pricing per 1M tokens. It is a planning aid, not a billing quote. Verify provider pricing, limits, and terms before production use.

Quick Decision

Verdict

OpenAI GPT Latest has the lower input price; OpenAI GPT Latest has the lower output price; OpenAI GPT Latest offers the larger context window. For the 1M input plus 500K output sample, OpenAI GPT Latest is cheaper for the standard workload.

For a 1M input token plus 500K output token workload, the estimated API cost is $20 for OpenAI GPT Latest and $105 for Claude Opus 4.6 (Fast).

Best Fit

Choose OpenAI GPT Latest when you care most about lower input-token price, lower output-token price, and larger context window.

Choose Claude Opus 4.6 (Fast) when its provider, model quality, latency, or availability is more important than the numeric price/context winner.

Decision Notes
  • On the standard 1M input plus 500K output workload, OpenAI GPT Latest is estimated at $20 vs $105 for Claude Opus 4.6 (Fast), saving $85 (81% lower).
  • OpenAI GPT Latest is $85 cheaper on the standard workload (81% lower).
  • OpenAI GPT Latest is $25 cheaper per 1M input tokens (83.3% lower; 6x difference).
  • OpenAI GPT Latest is $120 cheaper per 1M output tokens (80% lower; 5x difference).
  • OpenAI GPT Latest has 50K more context (1.05x larger).
Head-to-Head Specs
FeatureOpenAI GPT Latest
(OpenAI)		Claude Opus 4.6 (Fast)
(Anthropic)
Input Price
prompt tokens per 1M		$5$30
Completion Price
per 1M tokens		$30$150
Sample Workload Cost
1M input + 500K output		$20$105
Context Window1.05M1M
Release Date

Use-Case Decision Matrix

Use caseBetter pickWhy
Budget-constrained productionOpenAI GPT LatestOn the standard 1M input plus 500K output workload, OpenAI GPT Latest is estimated at $20 vs $105 for Claude Opus 4.6 (Fast), saving $85 (81% lower).
High-volume input processingOpenAI GPT LatestLower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill.
Long responses and chatbotsOpenAI GPT LatestLower output-token price matters most when assistants generate many completion tokens.
RAG or long-document workOpenAI GPT LatestA larger context window leaves more room for retrieved passages, conversation history, or source files.

Related Alternatives

Same-provider lower-cost swaps
  • gpt-oss-120b (free) can replace OpenAI GPT Latest when lower sample workload cost matters most: $0.
  • gpt-oss-20b (free) can replace OpenAI GPT Latest when lower sample workload cost matters most: $0.
  • gpt-oss-20b can replace OpenAI GPT Latest when lower sample workload cost matters most: $0.1.
  • gpt-oss-120b can replace OpenAI GPT Latest when lower sample workload cost matters most: $0.13.
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OpenAI catalog

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Anthropic catalog

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OpenAI GPT Latest

This model always redirects to the latest model in the OpenAI GPT family.

Claude Opus 4.6 (Fast)

Fast-mode variant of [Opus 4.6](/anthropic/claude-opus-4.6) - identical capabilities with higher output speed at premium 6x pricing. Learn more in Anthropic's docs: https://platform.claude.com/docs/en/build-with-claude/fast-mode