API cost decision in 10 seconds

Claude Opus 4.7 vs Gemma 4 31B (free)

Pick Gemma 4 31B (free) for lower cost; pick Claude Opus 4.7 only if the larger context window matters more.

Pricing data updated:  Prices normalized to USD per 1M tokens Sample workload: 1M input + 500K output

Budget verdict

Pick Gemma 4 31B (free) for lower cost; pick Claude Opus 4.7 only if the larger context window matters more.

On the standard 1M input plus 500K output workload, Gemma 4 31B (free) is estimated at $0 vs $17.5 for Claude Opus 4.7, saving $17.5 (100% lower).

Cost-first pickGemma 4 31B (free)
Context-first pickClaude Opus 4.7
Sample savings$17.5100%
10x traffic gap$175

Claude Opus 4.7 has more context, but Gemma 4 31B (free) saves $17.5 on the standard workload. At 10x that traffic, the same price gap is about $175. Use the calculator below to replace the sample workload with your own token volume.

Cost sensitivity

Workload Sensitivity

Same prices, different token mixes.

Gemma 4 31B (free) stays cheaper across input-heavy, balanced, and output-heavy sample workloads.

Workload shapeToken mixBetter pickClaude Opus 4.7Gemma 4 31B (free)
Input-heavy / RAG5M input + 500K outputGemma 4 31B (free)$37.5$0
Balanced workload1M input + 1M outputGemma 4 31B (free)$30$0
Output-heavy chatbot1M input + 5M outputGemma 4 31B (free)$130$0
Cheaper input Gemma 4 31B (free) $5 vs $0 / 1M

Gemma 4 31B (free) is free for input tokens while Claude Opus 4.7 costs $5 per 1M tokens.

Cheaper output Gemma 4 31B (free) $25 vs $0 / 1M

Gemma 4 31B (free) is free for output tokens while Claude Opus 4.7 costs $25 per 1M tokens.

Larger context Claude Opus 4.7 1M vs 262.14K

Claude Opus 4.7 has 737.86K more context (3.81x larger).

Sample workload Gemma 4 31B (free) $17.5 vs $0

Gemma 4 31B (free) is free for the standard workload while the other model is estimated at $17.5.

Estimate your workload cost

Your Workload Cost

Prices are normalized to USD per 1M tokens.
Claude Opus 4.7 Calculating… Estimated API cost
Gemma 4 31B (free) 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

Gemma 4 31B (free) has the lower input price; Gemma 4 31B (free) has the lower output price; Claude Opus 4.7 offers the larger context window. For the 1M input plus 500K output sample, Gemma 4 31B (free) is cheaper for the standard workload.

For a 1M input token plus 500K output token workload, the estimated API cost is $17.5 for Claude Opus 4.7 and $0 for Gemma 4 31B (free).

Best Fit

Choose Claude Opus 4.7 when you care most about larger context window.

Choose Gemma 4 31B (free) when you care most about lower input-token price, and lower output-token price.

Decision Notes
  • On the standard 1M input plus 500K output workload, Gemma 4 31B (free) is estimated at $0 vs $17.5 for Claude Opus 4.7, saving $17.5 (100% lower).
  • Gemma 4 31B (free) is free for the standard workload while the other model is estimated at $17.5.
  • Gemma 4 31B (free) is free for input tokens while Claude Opus 4.7 costs $5 per 1M tokens.
  • Gemma 4 31B (free) is free for output tokens while Claude Opus 4.7 costs $25 per 1M tokens.
  • Claude Opus 4.7 has 737.86K more context (3.81x larger).
Head-to-Head Specs
FeatureClaude Opus 4.7
(Anthropic)
Gemma 4 31B (free)
(Google)
Input Price
prompt tokens per 1M
$5$0
Completion Price
per 1M tokens
$25$0
Sample Workload Cost
1M input + 500K output
$17.5$0
Context Window1M262.14K
Release Date

Use-Case Decision Matrix

Use caseBetter pickWhy
Budget-constrained productionGemma 4 31B (free)On the standard 1M input plus 500K output workload, Gemma 4 31B (free) is estimated at $0 vs $17.5 for Claude Opus 4.7, saving $17.5 (100% lower).
High-volume input processingGemma 4 31B (free)Lower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill.
Long responses and chatbotsGemma 4 31B (free)Lower output-token price matters most when assistants generate many completion tokens.
RAG or long-document workClaude Opus 4.7A larger context window leaves more room for retrieved passages, conversation history, or source files.

Related Alternatives

Same-provider lower-cost swaps
  • Claude 3 Haiku can replace Claude Opus 4.7 when lower sample workload cost matters most: $0.88.
  • Claude 3.5 Haiku can replace Claude Opus 4.7 when lower sample workload cost matters most: $2.8.
  • Anthropic Claude Haiku Latest can replace Claude Opus 4.7 when lower sample workload cost matters most: $3.5.
  • Claude Haiku 4.5 can replace Claude Opus 4.7 when lower sample workload cost matters most: $3.5.
Popular competitors
  • No popular competitor is currently available.

Cheaper alternatives

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Larger context alternatives

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

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Provider catalogs

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Anthropic catalog

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

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Google catalog

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

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Claude Opus 4.7

Opus 4.7 is the next generation of Anthropic's Opus family, built for long-running, asynchronous agents. Building on the coding and agentic strengths of Opus 4.6, it delivers stronger performance on...

Gemma 4 31B (free)

Gemma 4 31B Instruct is Google DeepMind's 30.7B dense multimodal model supporting text and image input with text output. Features a 256K token context window, configurable thinking/reasoning mode, native function...