API cost decision in 10 seconds

NewOpenAI GPT Terra Latest vs Claude Fable 5.1 (batch)

Pick OpenAI GPT Terra 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 Terra Latest when budget and context both matter.

On the standard 1M input plus 500K output workload, OpenAI GPT Terra Latest is estimated at $8 vs $17.5 for Claude Fable 5.1 (batch), saving $9.5 (54.3% lower).

Cost-first pickOpenAI GPT Terra Latest
Context-first pickOpenAI GPT Terra Latest
Sample savings$9.554.3%
10x traffic gap$95

OpenAI GPT Terra Latest is cheaper on the standard workload and also has the larger context window. At 10x that traffic, the same price gap is about $95. 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 Terra Latest stays cheaper across input-heavy, balanced, and output-heavy sample workloads.

Workload shapeToken mixBetter pickOpenAI GPT Terra LatestClaude Fable 5.1 (batch)
Input-heavy / RAG5M input + 500K outputOpenAI GPT Terra Latest$16$37.5
Balanced workload1M input + 1M outputOpenAI GPT Terra Latest$14$30
Output-heavy chatbot1M input + 5M outputOpenAI GPT Terra Latest$62$130
Cheaper input OpenAI GPT Terra Latest $2 vs $5 / 1M

OpenAI GPT Terra Latest is $3 cheaper per 1M input tokens (60% lower; 2.5x difference).

Cheaper output OpenAI GPT Terra Latest $12 vs $25 / 1M

OpenAI GPT Terra Latest is $13 cheaper per 1M output tokens (52% lower; 2.08x difference).

Larger context OpenAI GPT Terra Latest 1.05M vs 1M

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

Sample workload OpenAI GPT Terra Latest $8 vs $17.5

OpenAI GPT Terra Latest is $9.5 cheaper on the standard workload (54.3% lower).

Estimate your workload cost

Your Workload Cost

Prices are normalized to USD per 1M tokens.
OpenAI GPT Terra Latest Calculating… Estimated API cost
Claude Fable 5.1 (batch) 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 Terra Latest has the lower input price; OpenAI GPT Terra Latest has the lower output price; OpenAI GPT Terra Latest offers the larger context window. For the 1M input plus 500K output sample, OpenAI GPT Terra Latest is cheaper for the standard workload.

For a 1M input token plus 500K output token workload, the estimated API cost is $8 for OpenAI GPT Terra Latest and $17.5 for Claude Fable 5.1 (batch).

Best Fit

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

Choose Claude Fable 5.1 (batch) 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 Terra Latest is estimated at $8 vs $17.5 for Claude Fable 5.1 (batch), saving $9.5 (54.3% lower).
  • OpenAI GPT Terra Latest is $9.5 cheaper on the standard workload (54.3% lower).
  • OpenAI GPT Terra Latest is $3 cheaper per 1M input tokens (60% lower; 2.5x difference).
  • OpenAI GPT Terra Latest is $13 cheaper per 1M output tokens (52% lower; 2.08x difference).
  • OpenAI GPT Terra Latest has 50K more context (1.05x larger).
Head-to-Head Specs
FeatureNewOpenAI GPT Terra Latest
(OpenAI)
Claude Fable 5.1 (batch)
(Anthropic)
Input Price
prompt tokens per 1M
$2$5
Completion Price
per 1M tokens
$12$25
Sample Workload Cost
1M input + 500K output
$8$17.5
Context Window1.05M1M
Release Date

Use-Case Decision Matrix

Use caseBetter pickWhy
Budget-constrained productionOpenAI GPT Terra LatestOn the standard 1M input plus 500K output workload, OpenAI GPT Terra Latest is estimated at $8 vs $17.5 for Claude Fable 5.1 (batch), saving $9.5 (54.3% lower).
High-volume input processingOpenAI GPT Terra LatestLower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill.
Long responses and chatbotsOpenAI GPT Terra LatestLower output-token price matters most when assistants generate many completion tokens.
RAG or long-document workOpenAI GPT Terra 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 Terra Latest when lower sample workload cost matters most: $0.
  • gpt-oss-20b (free) can replace OpenAI GPT Terra Latest when lower sample workload cost matters most: $0.
  • gpt-oss-20b can replace OpenAI GPT Terra Latest when lower sample workload cost matters most: $0.1.
  • gpt-oss-120b can replace OpenAI GPT Terra Latest when lower sample workload cost matters most: $0.12.

Cheaper alternatives

Review low-cost models sorted by a standard 1M input plus 500K output workload.

Open cheapest models

Larger context alternatives

Find models with larger context windows for RAG, long documents, and codebase review.

Open largest context models

Provider catalogs

Compare models within provider hubs before choosing a final API vendor.

Open provider hubs

OpenAI catalog

Review all tracked OpenAI models before deciding whether this matchup is the right shortlist.

Open OpenAI models

Anthropic catalog

Check other Anthropic models with comparable pricing, context, or release timing.

Open Anthropic models
OpenAI GPT Terra Latest

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

Claude Fable 5.1 (batch)

Claude Fable 5.1 improves on Claude Fable 5 across the board, with the biggest gains in agentic coding, long-running agentic workflows, and knowledge work: long code refactors, front-end and visual...